Top 10+ Cross Platform App Development Companies in Seattle, WA | Cross Platform App Developers Seattle 2026
Last Updated 06th August 2026 | Category: Top App Development Firms
The List of Top 10+ Cross Platform App Development Companies In Seattle, Washington | Top Cross Platform App Developers Seattle, WA 2026
1. Hyperlink InfoSystem
Sponsored
Not Claimed
Founded
2011
Employees
1000+
Hourly Rate
< $25
Our Rating
5.0/5
(65 reviews)
Avg. Project Cost
USD 50,000+
Contact No
+13097914105
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.
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.
2. Woopa
Not Claimed
Founded
2013
Employees
2 - 9
Hourly Rate
$25 - $49
Our Rating
4.5/5
(8 reviews)
Avg. Project Cost
USD 100,000+
Contact No
+5492914405532
Email
info@woopasoft.com
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.
Not Claimed
Founded
2000
Employees
10 - 49
Hourly Rate
$100 - $149
Our Rating
4.1/5
(8 reviews)
Avg. Project Cost
USD 5,000,000+
Contact No
+14806309992
Email
phoenix@nextfly.com
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.
4. ChaiOne
Not Claimed
Founded
2008
Employees
50 - 249
Hourly Rate
$100 - $149
Our Rating
4.7/5
(6 reviews)
Avg. Project Cost
USD 5,000,000+
Contact No
+18883160357
Email
hello@chaione.com
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.
5. JLOOP
Not Claimed
Founded
2001
Employees
10 - 49
Hourly Rate
$150 - $199
Our Rating
4.4/5
(7 reviews)
Avg. Project Cost
USD 2,500,000+
Contact No
+15624915667
Email
sayhello@jloop.com
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.
Not Claimed
Founded
2001
Employees
1000+
Hourly Rate
N/A
Our Rating
4.5/5
(8 reviews)
Avg. Project Cost
USD 100,000+
Contact No
+18664254242
Email
marcom@zensar.com
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.
7. SolbegSoft
Not Claimed
Founded
2008
Employees
50 - 249
Hourly Rate
$25 - $49
Our Rating
4.6/5
(6 reviews)
Avg. Project Cost
USD 50,000+
Contact No
+13472208411
Email
business@solbeg.com
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.
Not Claimed
Founded
2004
Employees
10 - 49
Hourly Rate
$150 - $199
Our Rating
4.2/5
(8 reviews)
Avg. Project Cost
USD 5,000,000+
Contact No
+18007644876
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.
9. ONLINICO
Not Claimed
Founded
2015
Employees
10 - 49
Hourly Rate
$50 - $99
Our Rating
4.5/5
(6 reviews)
Avg. Project Cost
USD 10,000+
Contact No
+14044653506
Email
hello@onlini.co
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.
10. Dogtown Media
Not Claimed
Founded
2011
Employees
10 - 49
Hourly Rate
$100 - $149
Our Rating
4.7/5
(6 reviews)
Avg. Project Cost
USD 2,500,000+
Contact No
+18888660067
Email
contact@dogtownmedia.com
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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