Mobile App Development
A mobile app development agency designs, builds, and ships apps for iOS and Android. Clients are startups building an app as the product itself, and established businesses adding a mobile channel for customers or field staff. Most firms handle the full arc: design, development, app store launch, and ongoing updates.
How they make money
Serious custom apps are quoted as projects but built on time and materials underneath. A genuine version one with accounts, a backend, and a polished interface most often lands between 50,000 and 250,000 dollars at a US agency, with complexity, integrations, and design ambition driving the spread. Simple apps built on templates or app builder platforms can come in far lower, and that is a legitimate choice when the app is a companion to a business rather than the business itself.
The recurring cost surprises first time buyers. Apps are never finished: operating system updates, new device sizes, and app store policy changes force regular releases even if you add nothing. Most agencies sell a monthly maintenance retainer, and a sensible budget reserves 15 to 25 percent of the build cost per year for upkeep. You will also pay directly for app store developer accounts and for backend hosting, which should sit in your name, not the agency's.
What good ones have in common
Red flags
How the category is changing
Cross platform frameworks won. Most new business apps ship one codebase to both stores, and the old two teams, two codebases model survives mainly for games and apps that push hardware hard. That cut typical build costs and shifted the sales conversation from platform choice to product judgment. At the same time, AI coding tools and template platforms have made simple apps dramatically cheaper, so the low end of the agency market is being squeezed while demand concentrates in apps with real backend complexity, integrations, and security requirements.
Regulatory pressure on Apple and Google is slowly opening payments and distribution, which matters if your app sells anything: the fee math and the checkout rules keep shifting, and a current agency earns its fee partly by knowing this month's version. Buyers should also expect AI features, usually a chat or summarization layer, to be pitched in every proposal; insist the firm justify them against what your users actually need.
Frequently asked questions
How much does it cost to build an app?
How long does it take to develop an app?
Should my app be native or cross platform?
Do I need an app or is a mobile website enough?
Who maintains the app after launch?
App shops chase the same startup and mid market clients as marketing agencies, often via referral from them, and the good ones scale delivery teams through staffing agencies rather than overhiring between projects.