Callisto Web Solutions B.V. Reviews

Great Experience With Callisto Web Solutions B.V. on Our Mobile App Development Project

Sneha Joshi / Owner | Oct 13, 2026

Our experience with Callisto Web Solutions B.V. was really positive from start to finish. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building. We dealt with the same core team throughout, so we did not have to keep re-explaining things. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later.

We launched on schedule and have not had any major issues since. I would recommend Callisto Web Solutions B.V. to anyone looking for a dependable Mobile App Development partner.

Project summary

Our company worked with Callisto Web Solutions B.V. to build iOS and Android apps for our customers, including booking, payments and push notifications. Scope included discovery workshops, development in two-week sprints and a short support period after launch. The project took roughly 9 months from kickoff to launch.

Overall Rating 5.0
Quality 5.0
Schedule 5.0
Project Cost 5.0
Willing To Refer 5.0

Project Type:: Mobile App Development
Project Cost:: $10,000 to $49,999
Project Duration:: Nov 2025 - Aug 2026
Business Type:: Real Estate
Location:: Jaipur, India

Questions & Answers

Please describe your company, your role, and the industry you operate in.

I work as Owner at Silverline Properties Pvt Ltd. We operate in Real Estate and most of our customers are in and around Jaipur, India.

What specific problem or business challenge led you to hire this company?

Our existing setup was holding us back. We wanted to build iOS and Android apps for our customers, including booking, payments and push notifications before our busy season.

What services did the company provide for your project?

End-to-end Mobile App Development — from requirements and design through to deployment and a support period afterwards.

Why did you choose this company over other providers you considered?

We compared three or four agencies. Callisto Web Solutions B.V. asked the best questions and had good reviews from past clients.

How clearly did the company understand your requirements and business goals?

Better than we expected. They pointed out a few things we had not thought about.

How was your overall experience with their communication and project management?

Very responsive. We usually heard back the same day, even with the time difference.

Did the company deliver the project on time and within your expected budget?

It was delivered on time, and the final invoice matched the original estimate.

What tangible results or business impact have you seen since the project was completed?

Our team saves several hours a week, and we have had very few issues since launch.

What did you like most about working with this company?

That they were proactive — they suggested improvements instead of just doing what was asked.

Would you recommend this company to others, and would you work with them again?

Definitely. We have already started talking about the next phase.

Professional team that made a complex project feel manageable

Chloe Thompson / Founder & CEO | Oct 09, 2026

Honestly, this was one of the smoothest projects we have run with an outside team. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. The developers were knowledgeable and made a few suggestions that ended up saving us time and money.

The AR/VR Development work has already made a noticeable difference — tasks that used to take hours now take minutes.

Happy to recommend them.

Project summary

We hired Callisto Web Solutions B.V. to build an AR product viewer so customers can preview items in their own space. Scope included discovery workshops, development in two-week sprints and a short support period after launch. The project took roughly 5 months from kickoff to launch.

Overall Rating 4.5
Quality 4.0
Schedule 5.0
Project Cost 4.5
Willing To Refer 5.0

Project Type:: AR/VR Development
Project Cost:: $10,000 to $49,999
Project Duration:: Apr 2026 - Sep 2026
Business Type:: Financial Services
Location:: Toronto, Canada

Questions & Answers

Please describe your company, your role, and the industry you operate in.

We're a mid-sized Financial Services company based in Toronto, Canada. I'm the Founder & CEO and I oversaw the project from start to finish.

What specific problem or business challenge led you to hire this company?

Our team was spending too much time on manual work. The goal was to build an AR product viewer so customers can preview items in their own space so they could focus on customers.

What services did the company provide for your project?

AR/VR Development, including planning, development, testing and launch support.

Why did you choose this company over other providers you considered?

A colleague recommended them, and our first calls confirmed they understood what we needed.

How clearly did the company understand your requirements and business goals?

They understood our goals quickly, partly because they had worked with Financial Services clients before.

How was your overall experience with their communication and project management?

Very responsive. We usually heard back the same day, even with the time difference.

Did the company deliver the project on time and within your expected budget?

Yes. The only extra cost came from features we added ourselves, and they quoted those fairly.

What tangible results or business impact have you seen since the project was completed?

Our team saves several hours a week, and we have had very few issues since launch.

What did you like most about working with this company?

How easy they were to work with. They were responsive, honest and genuinely interested in our success.

Would you recommend this company to others, and would you work with them again?

Yes, I would recommend them and we plan to work with them again.

Honest advice and solid execution

Owen Wilson / Co-Founder & CTO | Sep 30, 2026

Honestly, this was one of the smoothest projects we have run with an outside team. They were upfront about what was realistic within our budget, which helped us prioritise the right features. The developers were knowledgeable and made a few suggestions that ended up saving us time and money. They shared working builds regularly, so we could test early and give feedback before things were locked in.

Feedback from our customers has been very positive so far. We are already discussing the next phase with them.

Project summary

Our company worked with Callisto Web Solutions B.V. to rebuild a slow, outdated web app and move it to a new framework. The work covered requirements, design, development, testing and launch support. The engagement ran for about 3 months.

Overall Rating 4.5
Quality 4.5
Schedule 4.5
Project Cost 4.5
Willing To Refer 5.0

Project Type:: Web Development
Project Cost:: $10,000 to $49,999
Project Duration:: May 2026 - Aug 2026
Business Type:: Environmental Services
Location:: Montreal, Canada

Questions & Answers

Please describe your company, your role, and the industry you operate in.

I'm the Co-Founder & CTO at Oakline Recycling, a Environmental Services company based in Montreal, Canada. I look after our technology and work closely with outside partners on bigger projects.

What specific problem or business challenge led you to hire this company?

Our team was spending too much time on manual work. The goal was to rebuild a slow, outdated web app and move it to a new framework so they could focus on customers.

What services did the company provide for your project?

Web Development, plus QA and some consulting on how to structure the project.

Why did you choose this company over other providers you considered?

Their pricing was fair and they were honest about timelines instead of just telling us what we wanted to hear.

How clearly did the company understand your requirements and business goals?

Well. There were a couple of points we had to clarify early on, but after that they were spot on.

How was your overall experience with their communication and project management?

Communication was good overall and improved further once we settled into a routine.

Did the company deliver the project on time and within your expected budget?

Yes. The only extra cost came from features we added ourselves, and they quoted those fairly.

What tangible results or business impact have you seen since the project was completed?

It is still early, but the numbers are trending in the right direction and the system has been stable.

What did you like most about working with this company?

The consistency. Same team, same standard, from the first week to the last.

Would you recommend this company to others, and would you work with them again?

Yes, I would recommend them and we plan to work with them again.

Good value and a team that genuinely cares about the result

Rachel Wong / Co-Founder | Sep 21, 2026

We were very happy with how this project went. Even with the time zone difference, responses usually came the same day and we never felt left in the dark. They shared working builds regularly, so we could test early and give feedback before things were locked in.

It has made a real difference to how our team works day to day. I would recommend Callisto Web Solutions B.V. to anyone looking for a dependable AI & Machine Learning partner.

Project summary

We partnered with Callisto Web Solutions B.V. to build a demand forecasting model on top of our sales data. They worked alongside our in-house team, which mostly handled business requirements and testing. The engagement ran for about 4 months.

Overall Rating 4.5
Quality 4.0
Schedule 4.5
Project Cost 5.0
Willing To Refer 5.0

Project Type:: AI & Machine Learning
Project Cost:: $10,000 to $49,999
Project Duration:: Mar 2026 - Jul 2026
Business Type:: Manufacturing
Location:: Singapore

Questions & Answers

Please describe your company, your role, and the industry you operate in.

I work as Co-Founder at Silverline Components Pte Ltd. We operate in Manufacturing and most of our customers are in and around Singapore.

What specific problem or business challenge led you to hire this company?

Our team was spending too much time on manual work. The goal was to build a demand forecasting model on top of our sales data so they could focus on customers.

What services did the company provide for your project?

End-to-end AI & Machine Learning — from requirements and design through to deployment and a support period afterwards.

Why did you choose this company over other providers you considered?

We compared three or four agencies. Callisto Web Solutions B.V. asked the best questions and had good reviews from past clients.

How clearly did the company understand your requirements and business goals?

Well. There were a couple of points we had to clarify early on, but after that they were spot on.

How was your overall experience with their communication and project management?

Organised and transparent. Their project manager kept the project on track and flagged risks early.

Did the company deliver the project on time and within your expected budget?

Yes. The only extra cost came from features we added ourselves, and they quoted those fairly.

What tangible results or business impact have you seen since the project was completed?

We can now handle more volume without adding staff, which was the main goal.

What did you like most about working with this company?

That they were proactive — they suggested improvements instead of just doing what was asked.

Would you recommend this company to others, and would you work with them again?

Yes, I would recommend them and we plan to work with them again.

Great team to work with — professional, responsive and reliable

Tom Hughes / Co-Founder & CTO | Aug 13, 2026

I would rate this engagement highly on almost every front. They were upfront about what was realistic within our budget, which helped us prioritise the right features. The developers were knowledgeable and made a few suggestions that ended up saving us time and money. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building.

We launched on schedule and have not had any major issues since. We are already discussing the next phase with them.

Project summary

We hired Callisto Web Solutions B.V. to build a customer portal where clients can log in, track orders and download invoices. They also took care of integrations with a couple of third-party tools we already used. We worked together for around 5 months.

Overall Rating 4.5
Quality 4.5
Schedule 4.5
Project Cost 4.0
Willing To Refer 5.0

Project Type:: Web Development
Project Cost:: $10,000 to $49,999
Project Duration:: Feb 2026 - Jul 2026
Business Type:: Government & Public Sector
Location:: Nottingham, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.

We're a mid-sized Government & Public Sector company based in Nottingham, UK. I'm the Co-Founder & CTO and I oversaw the project from start to finish.

What specific problem or business challenge led you to hire this company?

We needed to build a customer portal where clients can log in, track orders and download invoices, and we didn't have the in-house capacity to do it ourselves.

What services did the company provide for your project?

Mainly Web Development. They also helped with the technical planning and a few integrations with our existing tools.

Why did you choose this company over other providers you considered?

A colleague recommended them, and our first calls confirmed they understood what we needed.

How clearly did the company understand your requirements and business goals?

Very well. They asked a lot of questions upfront and turned our rough ideas into a clear plan.

How was your overall experience with their communication and project management?

Very responsive. We usually heard back the same day, even with the time difference.

Did the company deliver the project on time and within your expected budget?

Yes. The only extra cost came from features we added ourselves, and they quoted those fairly.

What tangible results or business impact have you seen since the project was completed?

It is still early, but the numbers are trending in the right direction and the system has been stable.

What did you like most about working with this company?

Their attention to detail and the quality of the final product.

Would you recommend this company to others, and would you work with them again?

Yes. They are a reliable Web Development partner.

A reliable long-term partner for our tech needs

Daan Visser / General Manager | Jul 24, 2026

We were happy with the final result. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later. Their project manager kept things organised and was quick to flag anything that might affect the timeline. Even with the time zone difference, responses usually came the same day and we never felt left in the dark.

It has made a real difference to how our team works day to day. A couple of milestones slipped by a week or so, mostly around testing. We would definitely work with them again.

Project summary

Our company worked with Callisto Web Solutions B.V. to build a supply chain traceability prototype on a permissioned blockchain. The project was split into milestones, with a working build shared at the end of each one. We worked together for around 5 months.

Overall Rating 4.0
Quality 4.0
Schedule 4.0
Project Cost 4.5
Willing To Refer 5.0

Project Type:: Blockchain Development
Project Cost:: $50,000 to $149,999
Project Duration:: Jan 2026 - Jun 2026
Business Type:: Government & Public Sector
Location:: Utrecht, Netherlands

Questions & Answers

Please describe your company, your role, and the industry you operate in.

Maple Council Services BV is a Government & Public Sector business in Utrecht, Netherlands. As General Manager, I was responsible for this project on our side and the main contact for Callisto Web Solutions B.V..

What specific problem or business challenge led you to hire this company?

We needed to build a supply chain traceability prototype on a permissioned blockchain, and we didn't have the in-house capacity to do it ourselves.

What services did the company provide for your project?

Mainly Blockchain Development. They also helped with the technical planning and a few integrations with our existing tools.

Why did you choose this company over other providers you considered?

Their pricing was fair and they were honest about timelines instead of just telling us what we wanted to hear.

How clearly did the company understand your requirements and business goals?

Better than we expected. They pointed out a few things we had not thought about.

How was your overall experience with their communication and project management?

Very responsive. We usually heard back the same day, even with the time difference.

Did the company deliver the project on time and within your expected budget?

Mostly. One milestone slipped by about a week, but the final delivery was on schedule and the budget held.

What tangible results or business impact have you seen since the project was completed?

It is still early, but the numbers are trending in the right direction and the system has been stable.

What did you like most about working with this company?

Their attention to detail and the quality of the final product.

Would you recommend this company to others, and would you work with them again?

Yes, I would recommend them and we plan to work with them again.

Good results, communication improved as the project went on

Brandon Carter / Managing Director | Feb 28, 2026

The final product works well for us, although the process could have been smoother. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building. They shared working builds regularly, so we could test early and give feedback before things were locked in.

The Blockchain Development work has already made a noticeable difference — tasks that used to take hours now take minutes. There were some early misunderstandings on requirements that took a few rounds to sort out. I would recommend Callisto Web Solutions B.V. to anyone looking for a dependable Blockchain Development partner.

Project summary

We engaged Callisto Web Solutions B.V. to build a Web3 dashboard and wallet integration for our platform. The work covered requirements, design, development, testing and launch support. We worked together for around 7 months.

Overall Rating 3.5
Quality 3.5
Schedule 3.5
Project Cost 3.5
Willing To Refer 5.0

Project Type:: Blockchain Development
Project Cost:: $10,000 to $49,999
Project Duration:: Jul 2025 - Feb 2026
Business Type:: Manufacturing
Location:: San Jose, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.

I work as Managing Director at Lumen Manufacturing LLC. We operate in Manufacturing and most of our customers are in and around San Jose, USA.

What specific problem or business challenge led you to hire this company?

We had tried to do this internally and it stalled. We needed specialists to build a Web3 dashboard and wallet integration for our platform.

What services did the company provide for your project?

End-to-end Blockchain Development — from requirements and design through to deployment and a support period afterwards.

Why did you choose this company over other providers you considered?

We compared three or four agencies. Callisto Web Solutions B.V. asked the best questions and had good reviews from past clients.

How clearly did the company understand your requirements and business goals?

They understood our goals quickly, partly because they had worked with Manufacturing clients before.

How was your overall experience with their communication and project management?

Very responsive. We usually heard back the same day, even with the time difference.

Did the company deliver the project on time and within your expected budget?

It was delivered on time, and the final invoice matched the original estimate.

What tangible results or business impact have you seen since the project was completed?

We can now handle more volume without adding staff, which was the main goal.

What did you like most about working with this company?

Their attention to detail and the quality of the final product.

Would you recommend this company to others, and would you work with them again?

Yes. They are a reliable Blockchain Development partner.

Reliable Blockchain Development Partner That Delivered What They Promised

Maria Brooks / Director | Feb 17, 2026

We were happy with the final result. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building. Even with the time zone difference, responses usually came the same day and we never felt left in the dark. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time.

We launched on schedule and have not had any major issues since. A couple of milestones slipped by a week or so, mostly around testing. We are already discussing the next phase with them.

Project summary

Callisto Web Solutions B.V. was brought in to develop and audit smart contracts for a tokenized loyalty program. Scope included discovery workshops, development in two-week sprints and a short support period after launch. Overall it was a 7-month engagement.

Overall Rating 4.0
Quality 4.5
Schedule 4.0
Project Cost 4.0
Willing To Refer 5.0

Project Type:: Blockchain Development
Project Cost:: $50,000 to $149,999
Project Duration:: May 2025 - Dec 2025
Business Type:: Fashion & Apparel
Location:: New York, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.

We're a mid-sized Fashion & Apparel company based in New York, USA. I'm the Director and I oversaw the project from start to finish.

What specific problem or business challenge led you to hire this company?

Our team was spending too much time on manual work. The goal was to develop and audit smart contracts for a tokenized loyalty program so they could focus on customers.

What services did the company provide for your project?

Blockchain Development, plus QA and some consulting on how to structure the project.

Why did you choose this company over other providers you considered?

Their pricing was fair and they were honest about timelines instead of just telling us what we wanted to hear.

How clearly did the company understand your requirements and business goals?

Better than we expected. They pointed out a few things we had not thought about.

How was your overall experience with their communication and project management?

Good. Weekly calls, regular updates and a shared board meant we always knew where things stood.

Did the company deliver the project on time and within your expected budget?

It was delivered on time, and the final invoice matched the original estimate.

What tangible results or business impact have you seen since the project was completed?

Customer feedback has been positive, and we have seen better engagement since going live.

What did you like most about working with this company?

Their attention to detail and the quality of the final product.

Would you recommend this company to others, and would you work with them again?

Definitely. We have already started talking about the next phase.

Solid delivery, though timelines needed some pushing

Olivia Harris / Director | Feb 01, 2026

Overall the project was a success, though it was not without some challenges. They were upfront about what was realistic within our budget, which helped us prioritise the right features. Even with the time zone difference, responses usually came the same day and we never felt left in the dark. Their project manager kept things organised and was quick to flag anything that might affect the timeline.

The result looks great and performs well, and our internal team found it easy to take over. There were some early misunderstandings on requirements that took a few rounds to sort out.

We would definitely work with them again.

Project summary

We partnered with Callisto Web Solutions B.V. to build a customer portal where clients can log in, track orders and download invoices. Their team handled planning, development and QA, with our product owner signing off each milestone. The project took roughly 8 months from kickoff to launch.

Overall Rating 3.5
Quality 3.5
Schedule 3.5
Project Cost 3.5
Willing To Refer 5.0

Project Type:: Web Development
Project Cost:: $10,000 to $49,999
Project Duration:: May 2025 - Jan 2026
Business Type:: Human Resources
Location:: Melbourne, Australia

Questions & Answers

Please describe your company, your role, and the industry you operate in.

I work as Director at Summit Talent Pty Ltd. We operate in Human Resources and most of our customers are in and around Melbourne, Australia.

What specific problem or business challenge led you to hire this company?

Our team was spending too much time on manual work. The goal was to build a customer portal where clients can log in, track orders and download invoices so they could focus on customers.