Top 10+ Cross Platform App Development Companies in Seattle, WA | Cross Platform App Developers Seattle July 2026
Last Updated 27th July 2026 | Category: Top App Development FirmsThe List of Top 10+ Cross Platform App Development Companies In Seattle, Washington | Top Cross Platform App Developers Seattle, WA July 2026
Details
| Founded: | 2011 |
|---|---|
| Hourly Rates: | < $25 |
| Employees: | 1000+ |
| Avg. Project Cost: | $100,000+ |
| Ratings: |
5.0
497 Reviews
|
At Hyperlink InfoSystem, they take treasure in serving their strong company culture. They have an experienced equipment of technical professionals that have expertise in the advanced mobile & web technologies, allowing varied information technology solutions to their global business clients. They have many skills & processes that have affected their success. Their aim is to see all their marketing partners get result & set themselves aside from others. Their team members have the skills and technical expertise to beat all of your expectations. They provide the greatest quality mobile app development services at affordable rate. They are always one step forward to make new plans for the future with the help of the new technology.
Details
| Founded: | 2008 |
|---|---|
| Hourly Rates: | $25 - $49 |
| Employees: | 50 - 249 |
| Avg. Project Cost: | $5,000,000+ |
| Ratings: |
4.3
7 Reviews
|
It provides a unique service for mobile app development. They believe that the most important source they control is their people. They apply best methods and unique tools to make full solutions allowing them to maximize revenues on IT expenses and get the best profit and steady growth. They combine best practices and unique tools to make unique solutions which helps you to boost your business.
Details
| Founded: | 2001 |
|---|---|
| Hourly Rates: | N/A |
| Employees: | 1000+ |
| Avg. Project Cost: | $50,000+ |
| Ratings: |
4.6
6 Reviews
|
They will be the best at delivering innovative industry-focused solutions with measurable business outcomes. Zensar’s comprehensive range of digital and technology services and solutions allows its customers to achieve new thresholds of business performance. The technology assures that all transactions in bitcoin are properly recorded with high security.
Details
| Founded: | 2000 |
|---|---|
| Hourly Rates: | $100 - $149 |
| Employees: | 10 - 49 |
| Avg. Project Cost: | $50,000+ |
| Ratings: |
4.6
6 Reviews
|
Here, they take pride in the connections they have with their customers. They don’t just develop websites and walk away. They partner with organizations to not just build but maintain an online closeness that provides to the changing requirements as well as search engines. They like their clients, and they work difficult to explain it! They focus on the development of complicated solutions, that provide to their clients’ benefit by growing leaders in their markets.
Details
| Founded: | 2008 |
|---|---|
| Hourly Rates: | $100 - $149 |
| Employees: | 50 - 249 |
| Avg. Project Cost: | $25,000+ |
| Ratings: |
4.2
7 Reviews
|
Many companies today are continuously fighting in bringing, hiring and training specific IT talent. And, quickly evolving technology & industry requirements are just increasing challenges covered by these companies. To endure and to grow, they maintained their recruitment process & developed performance models that were strong and effective. They instantly recognized the processes they built would immensely help other businesses.
Details
| Founded: | 2015 |
|---|---|
| Hourly Rates: | $50 - $99 |
| Employees: | 10 - 49 |
| Avg. Project Cost: | $10,000+ |
| Ratings: |
4.2
6 Reviews
|
ONLINICO is a Software development service for startups. They offer the best app development solution, QA Services, and Continuous Support. The experience of ONLINICO to develop mobile applications & solutions as a high-demand customer-facing solution or as a business app which helped its customers achieve huge success in their mobility enterprises.
Details
| Founded: | 2004 |
|---|---|
| Hourly Rates: | $150 - $199 |
| Employees: | 10 - 49 |
| Avg. Project Cost: | $25,000+ |
| Ratings: |
4.1
6 Reviews
|
Treeline was established in 2004 with the prime objective of developing interactive rich media support for target resorts. The view of data is to increase some things that all know. Their code quality is comparable to the conventional startups. They have preferred a partner for various companies that help with their high-quality code, design, and expertise in mobile app analytics.
Details
| Founded: | 2001 |
|---|---|
| Hourly Rates: | $150 - $199 |
| Employees: | 10 - 49 |
| Avg. Project Cost: | $25,000+ |
| Ratings: | No reviews yet |
JLOOP is a full-service, rich media development firm based in Long Beach, Calif. that leverages the Internet as a platform for business success. They create robust, user-friendly interfaces that enrich the user experience in a myriad of ways. And get this: they help demystify the complexities of the online world by using a language they can all understand along the way.
Details
| Founded: | 2013 |
|---|---|
| Hourly Rates: | $25 - $49 |
| Employees: | 2 - 9 |
| Avg. Project Cost: | $50,000+ |
| Ratings: |
4.2
8 Reviews
|
Their mission is to provide companies highly motivated teams that work for a common goal in the process of transforming an idea into a product. Their team uses the latest technologies in the market and are fearless about the unknown. Their focus and attention extend throughout every stage of the process. They are dedicated to providing high-end work and giving amazing customer service.
Details
| Founded: | 2011 |
|---|---|
| Hourly Rates: | $100 - $149 |
| Employees: | 10 - 49 |
| Avg. Project Cost: | $2,500,000+ |
| Ratings: |
4.4
6 Reviews
|
They design and develop mobile applications that resolve real-world problems. An expert developer on their team will lead you through the process, solving questions and more to move your mobile app idea ahead. They work mutually to describe every part of the mobile app development method.
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FAQ
Frequently Asked Questions
Got questions about our specialized technology solutions? We have the answers to help you make informed decisions.
The gap usually shows up after the contract is signed, not before. A merely competent App Development company in Seattle builds what's in the spec; a genuinely great one pushes back when the spec is wrong, flags a scaling problem before it becomes expensive, and treats your product like something they have a stake in. That difference rarely shows up in a sales pitch — it shows up in how a firm's past clients talk about working with them months after launch.
Seattle turns out a steady stream of engineering talent each year, and the stronger App Development companies in the region have built real depth across current frameworks, cloud infrastructure, and mobile platforms rather than relying on a handful of senior people. For larger projects, ask specifically how a firm staffs beyond its founding team — that answer tells you whether their bench is genuinely deep or whether growth would strain it.
It does, in fairly practical ways — communication style, how formally decisions get escalated, and the pace at which changes get approved all vary by region, and Seattle has its own norms around each. None of this is a problem as long as expectations are set early; the App Development engagements that go smoothly in Seattle are usually the ones where the client spent a little time upfront understanding how the team likes to work, not just what they can build.
Rates for App Development developers in Seattle spread out quite a bit depending on seniority — junior developers sit at one end, senior engineers and architects at the other, with company size and specialization shifting things further. What tends to hold across the board is that App Development developers in Seattle come in noticeably cheaper than comparable talent in the US or Western Europe, without a proportional drop in the quality of work.
Skip past the summary and go straight to the portfolio examples, the full text of client reviews (not just the star rating), and how long the company has been operating. Reviews that mention specific, measurable results — a faster checkout flow, a successful migration, fewer support tickets — tell you far more than generic praise. It's also worth checking whether the App Development firm in Seattle responds to reviews at all, since that habit tends to mirror how they handle feedback during an actual project.
App Development companies in Seattle that take this seriously build with SEO baked into the architecture from day one — clean URL structures, fast load times, mobile-first layouts, and proper schema markup — rather than bolting it on after launch. A App Development firm in Seattle that treats search performance as an engineering responsibility, not a marketing afterthought, tends to produce sites that actually rank.
Most experienced App Development companies in Seattle have done this kind of integration many times over — Salesforce, HubSpot, Zoho, and similar platforms are common enough that it's rarely a novel problem. What matters more is giving your App Development partner in Seattle a full, honest picture of your current stack upfront, so the integration is built cleanly instead of patched together after the fact.
The highest-rated App Development companies in Seattle usually earn that position through a combination of solid technical delivery and genuinely good communication — the two rarely show up separately in strong reviews. Look past the aggregate star rating and read a handful of full reviews; specific, detailed praise about how a project actually went is a far better signal of which App Development company in Seattle will be a good fit than a number alone.
