DEVELOPMENT
How much does it cost to build a mobile app in the UK?
What drives mobile app development cost — features, platforms, design, back end and maintenance — and how to budget for an MVP.
By VISIBI Engineering team·Reviewed by Saeed Ak, Co-founder & CTO·Updated 29 September 2026·8 min read
QUICK ANSWER
What drives mobile app development cost — features, platforms, design, back end and maintenance — and how to budget for an MVP.
KEY TAKEAWAYS
✓Scope and back-end complexity drive cost more than platform.
✓Cross-platform frameworks usually reduce cost versus two native apps.
✓Budget for maintenance — OS updates happen every year.
BY THE NUMBERS
Typical timelines
8–12 wksMVP build
3–6 mthsfull product
YearlyOS updates to plan for
What drives cost
- Number of screens and features
- Custom design vs standard components
- Back end, APIs and admin panel
- Integrations (payments, maps, CRM)
- Native vs cross-platform
- Testing and App Store submission
Start with an MVP
Launch the smallest version that proves value, gather feedback, then add features. An MVP typically takes 8–12 weeks.
Ongoing costs
Plan for hosting, monitoring, OS updates, bug fixes and new features — often a monthly support retainer.
Common mistakes to avoid
✕Starting to build before requirements and success metrics are clear
✕Not owning your code, repositories and accounts
✕Skipping automated tests to save time
✕Choosing technology the market can’t hire for
HOW VISIBI CAN HELP
How we help with development
01DiscoveryClear scope, architecture and estimates before code is written.
02Build in sprintsWeekly demos so you see progress and can change direction.
03Test & releaseAutomated tests and CI/CD for safe, frequent releases.
04SupportNew builds, enhancements, takeovers and ongoing maintenance.
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Frequently asked questions
Is Flutter cheaper than native?
Usually, because one codebase serves both platforms.
How long does an app take?
MVPs 8–12 weeks; larger apps 3–6 months.
Do you publish to the App Store?
Yes — we handle submission and review.
SA
Reviewed by Saeed Ak · Co-founder & CTO25 years engineering high-traffic ecommerce, cloud and security platforms. Written by the VISIBI Engineering team.Meet the team →