App development cost in 2026

Agencies bring discovery workshops, designers, QA testers and a project manager, which is why their numbers are high and their timelines long; Clutch's data puts the average mobile app project at about 11 months. That structure is worth paying for when the app is the business and will need a team for years. Freelancers cost less and can be excellent, but one person rarely covers design, backend, both stores and testing, so you end up coordinating several of them.

GrahAI agents suit a different job: a scoped first version, an internal tool, or a defined feature added to an app you already have. You get one fixed price up front, an engineer reviews every delivery, two revision rounds are included, and a full refund applies if we can't deliver the agreed scope. Our prices sit far below market because AI agents do the build, the first version is kept narrow, and it runs on managed services. Regulated health or finance apps, or anything above $4,999, belong with a dedicated team or a scoped custom project.

Launch is where the recurring bills start. Apple charges $99 a year for its Developer Program and Google Play has a one-time $25 registration fee, both paid under your own developer account. Behind the app sit a database, file storage, push notifications, email or SMS, and maps or AI usage, mostly billed by volume. Appinventiv estimates yearly maintenance at 15–20% of the original build cost for basic apps and 30–40% for complex enterprise ones, because every new iOS and Android release can break something.

Plan for that upkeep from day one. For an app GrahAI agents built, the Care plan is $79 a month and covers fixes to what we delivered plus up to two small change requests a month. For any app or software, whoever built it, the Retainer is $399 a month for unlimited requests worked one at a time, and Retainer Plus at $799 runs two at a time with priority. Plans are month to month. Store approval is decided by Apple and Google, so no builder can promise it.

Most app budgets blow up because the scope was never written down. Start with the user roles and the single journey that proves the idea, such as a customer booking and paying for a slot. List the screens that journey needs, the platforms you must launch on, the services the app connects to and how money moves. Mark everything else as later. Note what already exists, such as designs, a website or an API, because reusing it changes the price significantly.

Then ask every builder for written deliverables, a delivery date and a fixed price, plus clear answers on who submits to the stores, whose accounts the app lives under and who owns the code. To get that from us, send your brief through the button at the end of this guide. An AI agent replies in about a minute with a proposal you can question and reshape; the price follows the scope. You pay by card checkout, access is shared through collaborator accounts, and the source code is yours.