"How much will my app cost?" is the first question almost every founder asks us — and the honest answer is: it depends on what the app needs to do. Two apps that look similar on the surface can differ in cost several times over because of what happens behind the screen. Instead of quoting a number that means nothing, this guide explains the factors that actually move the price, so you can plan a realistic budget.
The 7 factors that decide app development cost
- Features and screens. Every screen, user role and workflow adds design, development and testing time. A login, a catalogue and a contact form is a very different project from bookings, payments, chat and live tracking.
- Platforms. Android only, iOS only, or both. A cross-platform framework such as Flutter or React Native lets one codebase serve both, which usually costs less than building two separate native apps.
- Design. Using a clean standard design system is faster than fully custom illustrations, animations and branded interactions.
- Backend and admin panel. Most business apps need a server, a database and an admin panel to manage users, orders or content. This is often half of the real work.
- Integrations. Payment gateways, WhatsApp and SMS notifications, maps, CRMs, ERPs and third-party APIs each add effort — especially when the other system is old or poorly documented.
- Security and compliance. Fintech, healthcare and apps that store personal data need stronger authentication, encryption, audit logs and careful testing.
- Support after launch. Hosting, monitoring, OS updates and new features are ongoing costs. Plan for them from the start.
Typical timelines
Time is the best proxy for cost, because most of the cost of an app is skilled engineering time. These are the ranges we see most often:
| Type of app | What it usually includes | Typical timeline |
|---|---|---|
| MVP (minimum viable product) | Core user journey, simple admin panel, one or two integrations | 6–10 weeks |
| Full business app | Multiple user roles, payments, notifications, analytics, admin dashboard | 3–6 months |
| Complex platform | Marketplace or fintech/health app with many integrations and strict security | 6 months or more, in phases |
How to reduce cost without cutting quality
- Start with an MVP. Launch the one journey that proves your idea, then add features based on real user feedback.
- Choose cross-platform if you need both Android and iOS and don't need heavy device-level features.
- Write down your must-haves and nice-to-haves. A clear scope is the single biggest saver — it prevents rework.
- Reuse proven services for payments, messaging and authentication instead of building them from scratch.
- Insist on clean, documented code. Cheap code that nobody else can maintain becomes the most expensive code you own.
Hidden costs to ask about
Before you sign, ask every agency the same questions: Who owns the source code? Are app store publishing, hosting and third-party API charges included? What happens to bugs found after launch? How are change requests priced? A good partner answers all of these in writing.
How to get an accurate quote
Bring three things to your first call: who the users are, the main things they should be able to do, and any systems the app must connect to. With that, an experienced team can give you a realistic estimate and a phased plan. Book a free 30-minute consultation and we'll give you an honest read on scope, timeline and budget.
Frequently asked questions
How long does it take to build a mobile app?
An MVP typically takes 6–10 weeks and a full business app 3–6 months. Complex platforms are usually built in phases over six months or more.
Is it cheaper to build one app for both Android and iOS?
Usually yes. Cross-platform frameworks like Flutter let one codebase run on both platforms, which reduces development and maintenance effort compared with two native apps.
Who owns the app's source code?
You should. Make sure your contract transfers full ownership of the code, designs and documentation to you. At proCodex AI, clients own 100% of the code and IP.
Need help with this?
Our senior team can scope it with you in a free 30-minute call — no salespeople, no pressure.

