As of November 2026, this directory tracks 59 cross-platform companies. Hyperlink InfoSystem currently sits at the top of the list (5.0-star average from 497 verified reviews, $25 - $49 / hr, in business since 2011). Looking at the group as a whole, the midpoint hourly rate is $125, the median rating is 4.8, and 21% report a team of 50 or more. Most frequently listed specialties here include Mobile App Development, Web Development, AI Development, and Bot Development.

Every company on this page is evaluated on the same real signals: how clients have rated their work, what they charge per hour, how big their team is, and how long they've been in business. Clients rate these cross-platform firms 4.8/5 on average. $100 - $149 / hr is the most common rate band. Roughly 20% of the companies listed report a headcount of 50 or more. Before reaching out to any shortlisted firm, it's worth cross-checking its review history and portfolio directly - every listing is manually checked (founding year, services, team size) and reviews go through a moderation step before they go live.

59
Verified Firms
$100 - $149 / hr
Most Common Rate
4.8
Average Rating
20%
Have 50+ Employees
How this list is built: Companies are added only after manual research into their foundation year, service offerings, ratings, and employee strength. Client reviews go through a verification step before being marked Verified and shown publicly. Listings marked Sponsored pay for premium placement — sponsorship does not affect star ratings or review content.

Top-Ranked cross-platform Companies

Compare the highest-ranked firms first side by side.

Rank Company Rating Reviews Hourly Rate Team Size Founded Headquarters Action
1 5.0 497 $25 - $49 / hr 1,000 - 9,999 2011 Jersey City, NJ Visit Profile
2
4.8 8 $100 - $149 / hr 10 - 49 2007 Sarasota, FL Visit Profile
3 4.8 8 $50 - $99 / hr 2 - 9 2015 Miami Beach, FL Visit Profile
4 4.8 8 $100 - $149 / hr 10 - 49 2012 Atlanta, GA Visit Profile
5 4.8 8 $100 - $149 / hr 10 - 49 2014 Irvine, CA Visit Profile
6 4.8 8 $50 - $99 / hr 50 - 249 2004 Austin, TX Visit Profile
7
4.8 8 Undisclosed 10 - 49 2009 Oklahoma City, OK Visit Profile
8 4.8 8 $25 - $49 / hr 50 - 249 2015 Hallandale Beach, FL Visit Profile
9 4.8 8 $100 - $149 / hr 2 - 9 2006 Ankeny, IA Visit Profile
10
4.8 8 $150 - $199 / hr 10 - 49 2008 Philadelphia, PA Visit Profile

The List of Top 10+ Cross Platform App Development Companies in Washington | Top Cross Platform App Developers Washington November 2026

2014
$50 - $99
10 - 49
$50,000+
Mobile App Development Web Development UI-UX Design Custom Software Development
2014
$100 - $149
2 - 9
$50,000+
Mobile App Development Web Development UI-UX Design Custom Software Development Chat Bots & AI Development Web Design E-commerce Development Digital Strategy
2002
$25 - $49
500 - 999
$25,000+
Mobile App Development Web Development Custom Software Development
2012
$150 - $199
10 - 49
$100,000+
Mobile App Development iOS App Development iPhone App Development
2018
Undisclosed
50 - 249
2011
$50 - $99
10 - 49
$5,000,000+
Mobile App Development Web Development Custom Software Development E-commerce Development Android App Development iOS App Development
4.8 8 Reviews
2007
$100 - $149
10 - 49
$50,000+
Mobile App Development Web Development UI-UX Design Web Design Digital Strategy
1996
$100 - $149
10 - 49
$2,500,000+
Mobile App Development Web Development UI-UX Design Web Design Social Media Marketing SEO
1998
$150 - $199
10 - 49
$100,000+
Mobile App Development Web Development UI-UX Design Custom Software Development Web Design
2009
$100 - $149
10 - 49
$50,000+
Mobile App Development Web Development UI-UX Design Web Design Content Management System
2007
$100 - $149
2 - 9
$5,000,000+
Mobile App Development Web Development UI-UX Design Web Design Branding SEO
2010
Undisclosed
10 - 49
2015
$100 - $149
10 - 49
$10,000+
Mobile App Development Web Development UI-UX Design Big Data
No reviews yet
—
Undisclosed
2 - 9
2005
$150 - $199
2 - 9
2004
$50 - $99
2 - 9
$10,000+
Mobile App Development Web Development UI-UX Design Social Media Marketing SEO Internet Marketing Logo Designing
2015
$50 - $99
2 - 9
$10,000+
Mobile App Development Web Development UI-UX Design Custom Software Development Web Design Digital Strategy Blockchain Development
No reviews yet
2021
$25 - $49
2 - 9
—
$100 - $149
10 - 49
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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 line items that push a App Development project in Washington over budget are rarely the obvious ones — it's usually the number of third-party integrations, how deep the testing needs to go, and what happens after launch in terms of support and maintenance. Compliance and security work, if your project needs it, adds a real chunk on top. A proper discovery conversation with your App Development partner in Washington should surface most of this before you sign anything.

Most will, as long as the scope is genuinely locked down — clear requirements, a defined timeline, and agreed deliverables. Fixed-price contracts with App Development companies in Washington tie payment to milestones rather than hours worked, which is good for budget predictability but only works if everyone agrees upfront on what a change request looks like. Make sure that process is spelled out in writing before work starts.

Value from a App Development company in Washington comes less from the rate you negotiate and more from whether the team understands the business problem behind the build. Firms that ask about your actual goals before proposing a solution, and that stick around to look at usage data after launch, tend to produce work that pays for itself. A App Development partner in Washington chasing the lowest quote rarely correlates with the best long-term outcome.

App Development companies in Washington 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 Washington that treats search performance as an engineering responsibility, not a marketing afterthought, tends to produce sites that actually rank.

Firms with real cross-border experience can — App Development companies in Washington that have supported international expansion before will know what it takes to localize a product properly: multi-language support, region-specific payment gateways, and compliance requirements that vary by market. That kind of hands-on experience is worth more than a generic promise to "support global growth," so ask for a specific example before assuming a App Development firm in Washington can deliver on it.

The better App Development companies in Washington don't disappear after handover — expect ongoing options like performance monitoring, security patching, feature iteration based on real usage data, and a maintenance retainer that keeps the product stable as it grows. A App Development partner in Washington that stays engaged post-launch is usually the one that ends up delivering more value over the life of the product than the initial build itself.

App Development companies in Washington known for reliable delivery usually share a few habits: established agile processes, experienced project managers rather than junior coordinators, and reusable components that cut down on repeated work. Ask a shortlisted App Development firm in Washington directly for their on-time delivery rate and how they've handled a project that started slipping — the answer to the second question is usually more revealing than the first.

Start by filtering for App Development companies in Washington with direct experience in your vertical — a firm that has already built for healthcare, fintech, or retail will already understand the compliance rules and user expectations that come with it, instead of learning them on your project. Ask for case studies specific to your industry, and where possible, talk to a client from the same sector to confirm the experience is as deep as the portfolio suggests.
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