Top Cross-Platform App Development Agencies in the United States

Cross-Platform App Agencies in the United States: compare 17 agencies, ranked by verified client reviews.

17 agencies listed Updated

Ranked by verified client reviews: each agency’s average rating, weighed against how many reviews it has. Agencies without reviews follow, ordered by their Google Maps rating when there is one. Agencies pay a one-time fee to be listed. Payment never affects their rank or their reviews. How we rank

Inoxoft

No reviews yet

ISO 27001, Google and Microsoft certified software development company

Min. project size
$10,000+
Hourly rate
$25–$49 / hr
Team size
50–249 employees
Headquarters
Philadelphia, United States

Service focus

  • Web Development 20%
  • Mobile App Development 10%
  • Software Development 10%
  • Testing Services 10%

TRIARE

No reviews yet

A global web and mobile software agency

Min. project size
$10,000+
Hourly rate
$25–$49 / hr
Team size
50–249 employees
Headquarters
Fairfax, United States

Service focus

  • Web Development 30%
  • Mobile App Development 25%
  • Software Development 20%
  • Web Design 15%

Cross-Platform App Agencies in the United States at a glance

Typical hourly rate
$25–$49 / hr
57% of 14 agencies
Most common minimum project
$10,000+
50% of 14 agencies
Most common team size
50–249 employees
69% of 16 agencies

Industries they serve most

  • Healthcare (16)
  • Financial services (14)
  • E-commerce (11)
  • Education (8)
  • Real estate (4)

Based on what 17 listed agencies report about themselves, and 0 verified client reviews. Updated October 24, 2026.

Cross-Platform App Agencies by city in the United States