Grossum

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Details

Founded:: 2013
Hourly Rates:: $25 - $49 / hr
Employees:: 50 - 249
Ratings:: 4.1 9 Reviews

Industries Served

Human Resources Pharmaceuticals & Biotechnology Government & Public Sector Education Construction Telecommunications Retail & E-commerce

Where We Specialize

22% Web Development

Web Development 22%

AI Development 20%

Bot Development 14%

Virtual Reality 14%

UI/UX 12%

Mobile App Development 10%

Web Design 8%

Industry Expertise

Logistics100%

Typical Project Size

69% Midmarket Business

25% Enterprise

6% Small Business

About

Grossum works with clients to plan, build, and ship digital products. They have delivered projects for clients in industries such as Logistics. The company operates with a team of 50 - 249 professionals. Typical hourly rates run around $25 - $49 / hr/hr. Clients have rated Grossum 4.5 out of 5 in 1 reviews. Overall, Grossum is one of the options worth shortlisting for a technology project.

Grossum Reviews

4.1 9 Reviews

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Great Experience With Grossum on Our AI & Machine Learning Project

Kelly Johnson / Director of Technology | Oct 17, 2026

Grossum did good work for us, and we would use them again. When we changed our minds on a couple of features halfway through, they handled it without fuss and were clear about the impact on cost and timeline. 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. Documentation at handover was a bit thin and we had to ask for more detail. Happy to recommend them.

Project summary

Our company worked with Grossum to add an AI chatbot to our support site that answers questions from our help docs. The project was split into milestones, with a working build shared at the end of each one. The engagement ran for about 7 months.

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

Project Type:: AI & Machine Learning
Project Cost:: $500,000+
Project Duration:: Jan 2026 - Aug 2026
Business Type:: Human Resources
Location:: Atlanta, USA

Questions & Answers

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

I'm the Director of Technology at Sage Staffing Inc, a Human Resources company based in Atlanta, USA. 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?

We had tried to do this internally and it stalled. We needed specialists to add an AI chatbot to our support site that answers questions from our help docs.

What services did the company provide for your project?

AI & Machine Learning, including planning, development, testing and launch support.

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?

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?

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, I've already recommended them to a couple of people I know.

Capable Web Development team — happy with the end result

James Shaw / Founder | Aug 11, 2026

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

The result looks great and performs well, and our internal team found it easy to take over. Estimates on a few features were optimistic and those took longer than planned. Overall, a team we trust and plan to keep working with.

Project summary

Grossum was brought in to rebuild a slow, outdated web app and move it to a new framework. Scope included discovery workshops, development in two-week sprints and a short support period after launch. Overall it was a 9-month engagement.

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:: Oct 2025 - Jul 2026
Business Type:: Pharmaceuticals & Biotechnology
Location:: Reading, UK

Questions & Answers

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

We're a mid-sized Pharmaceuticals & Biotechnology company based in Reading, UK. I'm the Founder and I oversaw the project from start to finish.

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 rebuild a slow, outdated web app and move it to a new framework.

What services did the company provide for your project?

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

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?

They understood our goals quickly, partly because they had worked with Pharmaceuticals & Biotechnology clients before.

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?

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?

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. They are a reliable Web Development partner.

Honest advice and solid execution

Harsh Sharma / Director | Jul 04, 2026

I would rate this engagement highly on almost every front. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. Their project manager kept things organised and was quick to flag anything that might affect the timeline. We dealt with the same core team throughout, so we did not have to keep re-explaining things.

The AI & Machine Learning work has already made a noticeable difference — tasks that used to take hours now take minutes. We are already discussing the next phase with them.

Project summary

We engaged Grossum to build a demand forecasting model on top of our sales data. Their team handled planning, development and QA, with our product owner signing off each milestone. The engagement ran for about 7 months.

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

Project Type:: AI & Machine Learning
Project Cost:: $10,000 to $49,999
Project Duration:: Sep 2025 - Apr 2026
Business Type:: Government & Public Sector
Location:: Noida, India

Questions & Answers

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

I work as Director at Kinetic Public Services. We operate in Government & Public Sector and most of our customers are in and around Noida, India.

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

We needed to build a demand forecasting model on top of our sales data, and we didn't have the in-house capacity to do it ourselves.

What services did the company provide for your project?

AI & Machine Learning, plus QA and some consulting on how to structure the project.

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

They had relevant experience in Government & Public Sector and their proposal was the clearest of the ones we received.

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?

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, on time and within budget.

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?

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.

Strong Technical Skills and a Very Responsive Mobile App Development Team

Rachel Goh / Co-Founder | Jun 08, 2026

The project went well overall. 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.

It has made a real difference to how our team works day to day. Documentation at handover was a bit thin and we had to ask for more detail.

Overall, a team we trust and plan to keep working with.

Project summary

We engaged Grossum 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. We worked together for around 7 months.

Overall Rating 4.0
Quality 4.0
Schedule 4.0
Project Cost 3.5
Willing To Refer 5.0

Project Type:: Mobile App Development
Project Cost:: $50,000 to $149,999
Project Duration:: Oct 2025 - May 2026
Business Type:: Education
Location:: Singapore

Questions & Answers

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

Bluepeak EdTech Pte Ltd is a Education business in Singapore. As Co-Founder, I was responsible for this project on our side and the main contact for Grossum.

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 iOS and Android apps for our customers, including booking, payments and push notifications so they could focus on customers.

What services did the company provide for your project?

Mobile App Development, including planning, development, testing and launch support.

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?

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?

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?

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?

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

Skilled UI/UX Design Team That Understood Our Business

Arjun Desai / Founder | May 24, 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. They were upfront about what was realistic within our budget, which helped us prioritise the right features. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later.

It has made a real difference to how our team works day to day. If you need a team that communicates well and delivers, they are a good choice.

Project summary

Grossum was brought in to run user research and create new designs for our mobile app. 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 5.0
Quality 4.5
Schedule 5.0
Project Cost 5.0
Willing To Refer 5.0

Project Type:: UI/UX Design
Project Cost:: $10,000 to $49,999
Project Duration:: Sep 2025 - Apr 2026
Business Type:: Pharmaceuticals & Biotechnology
Location:: Ahmedabad, India

Questions & Answers

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

Lumen Life Sciences Pvt Ltd is a Pharmaceuticals & Biotechnology business in Ahmedabad, India. As Founder, I was responsible for this project on our side and the main contact for Grossum.

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 run user research and create new designs for our mobile app so they could focus on customers.

What services did the company provide for your project?

UI/UX Design, plus QA and some consulting on how to structure the project.

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

They had relevant experience in Pharmaceuticals & Biotechnology and their proposal was the clearest of the ones we received.

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?

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, on time and within budget.

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?

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?

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

Reliable Mobile App Development Partner That Delivered What They Promised

Megan Foster / Head of Digital Transformation | May 23, 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. Their project manager kept things organised and was quick to flag anything that might affect the timeline. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building.

Feedback from our customers has been very positive so far. I would recommend Grossum to anyone looking for a dependable Mobile App Development partner.

Project summary

Our company worked with Grossum to rebuild our existing mobile app, which had poor reviews and frequent crashes. Scope included discovery workshops, development in two-week sprints and a short support period after launch. We worked together for around 4 months.

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

Project Type:: Mobile App Development
Project Cost:: $500,000+
Project Duration:: Dec 2025 - Apr 2026
Business Type:: Construction
Location:: Columbus, USA

Questions & Answers

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

Lumen Builders Inc is a Construction business in Columbus, USA. As Head of Digital Transformation, I was responsible for this project on our side and the main contact for Grossum.

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 our existing mobile app, which had poor reviews and frequent crashes so they could focus on customers.

What services did the company provide for your project?

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

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 Construction clients before.

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, on time and within budget.

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?

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've already recommended them to a couple of people I know.

Quality work, a little slower than we planned

Nikhil Reddy / Co-Founder & CTO | May 13, 2026

The final product works well for us, although the process could have been smoother. 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. Documentation at handover was a bit thin and we had to ask for more detail. I would recommend Grossum to anyone looking for a dependable Mobile App Development partner.

Project summary

Our company worked with Grossum to develop a field-staff app with offline mode that syncs back to our main system. The project was split into milestones, with a working build shared at the end of each one. Overall it was a 9-month engagement.

Overall Rating 3.5
Quality 3.5
Schedule 4.0
Project Cost 3.5
Willing To Refer 5.0

Project Type:: Mobile App Development
Project Cost:: $50,000 to $149,999
Project Duration:: Jul 2025 - Apr 2026
Business Type:: Pharmaceuticals & Biotechnology
Location:: Noida, India

Questions & Answers

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

I work as Co-Founder & CTO at Trueline Pharma. We operate in Pharmaceuticals & Biotechnology and most of our customers are in and around Noida, India.

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

We needed to develop a field-staff app with offline mode that syncs back to our main system, and we didn't have the in-house capacity to do it ourselves.

What services did the company provide for your project?

Mobile App Development, including planning, development, testing and launch support.

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

We compared three or four agencies. Grossum 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 Pharmaceuticals & Biotechnology clients before.

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, on time and within budget.

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?

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.

Solid delivery, though timelines needed some pushing

Rohan Joshi / Product Manager | Mar 19, 2026

Overall the project was a success, though it was not without some challenges. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. We dealt with the same core team throughout, so we did not have to keep re-explaining things.

The result looks great and performs well, and our internal team found it easy to take over. Documentation at handover was a bit thin and we had to ask for more detail. If you need a team that communicates well and delivers, they are a good choice.

Project summary

Our company worked with Grossum to add an AI chatbot to our support site that answers questions from our help docs. Their team handled planning, development and QA, with our product owner signing off each milestone. Overall it was a 9-month engagement.

Overall Rating 4.0
Quality 3.5
Schedule 3.5
Project Cost 3.5
Willing To Refer 5.0

Project Type:: AI & Machine Learning
Project Cost:: $50,000 to $149,999
Project Duration:: Jun 2025 - Mar 2026
Business Type:: Telecommunications
Location:: Mumbai, India

Questions & Answers

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

I'm the Product Manager at Maple Telecom, a Telecommunications company based in Mumbai, India. 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 existing setup was holding us back. We wanted to add an AI chatbot to our support site that answers questions from our help docs before our busy season.

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.