"How long will it take?" is the second question after cost. The answer depends on the app's complexity, how quickly decisions are made and how much testing is needed. Here are realistic expectations.
Typical Timelines
These are broad indications for professionally built apps:
- Simple app with a few screens and basic backend: roughly 6 to 10 weeks.
- Medium-complexity app with accounts, payments, notifications and an admin panel: roughly 3 to 5 months.
- Complex app with multiple user roles, real-time features and integrations: 6 months or more.
The Phases of App Development
Discovery and Planning (1–3 weeks)
Requirements, user flows, feature priorities and technical decisions.
UI/UX Design (2–6 weeks)
Wireframes, visual design and clickable prototypes. Approvals here prevent costly changes later.
Development (4 weeks to several months)
Backend, APIs, admin panel and the mobile apps, built in sprints with regular demos.
Testing (overlapping with development, plus 1–3 weeks)
Functional, device, performance and security testing on a range of phones.
Launch (1–2 weeks)
App store submission and review, production setup and monitoring.
What Speeds Things Up
- Clear, prioritised requirements.
- Fast feedback and decisions.
- Using cross-platform frameworks.
- Reusing proven components for login, payments and notifications.
- Launching an MVP first and adding features later.
What Slows Things Down
- Changing requirements mid-development.
- Slow approvals on designs and builds.
- Delays in getting content, API access or third-party credentials.
- Complex integrations with older systems.
- App store rejections due to policy issues.
"Most app delays are decision delays, not development delays."
App Store Review
Both Google Play and the Apple App Store review apps before publishing. Reviews are often quick, but rejections for policy or metadata issues can add days. Prepare privacy policies, screenshots and descriptions early.
Planning Your Launch Date
Work backwards from your business deadline. Leave buffer time for testing and store review. If the date is fixed, reduce scope rather than compressing testing.
Common Questions
Can an app be built in a few weeks? A very simple app or prototype can be built quickly, especially using cross-platform frameworks and ready-made components. Apps with payments, user roles, admin panels and integrations need more time for development and proper testing.
Does adding more developers speed things up? Up to a point. Some work can run in parallel, such as backend and app development. But adding people late in a project often slows it down because of coordination and onboarding.
How long does app store approval take? Reviews are often completed within a few days, but rejections for policy, privacy or metadata issues can add time. Preparing store listings, privacy policies and test accounts early helps.
What should we do while the app is being built? Prepare content, product data, app store screenshots and marketing plans, arrange third-party accounts such as payment gateways, and give fast feedback on demos.
How ITELLIC Plans Timelines
We share a phase-wise plan with milestones and demo builds, so you always know where the project stands and what is coming next.
Enterprise Mobile Apps
Android and iOS apps for your customers and your team.
