Why most mobile app development agencies frustrate founders
Hiring a mobile app development agency should not feel like a gamble.
Separate iOS and Android teams
Most mobile app agencies build each platform with a different team. Double the cost, double the timeline, twice as many bugs to fix. You pay for the same mobile app twice.
Endless agency billing
Hourly rates, change requests, scope creep invoices. The mobile app development agency has no incentive to finish quickly — every extra sprint is more revenue.
Pitch in London, build overseas
The sales team is local but the mobile app gets built offshore. Communication gaps, timezone delays, and code quality you cannot verify until it is too late.
Wall & Fifth is a mobile app development agency that builds one codebase for both platforms — fixed price, direct access to the builder, live in 8 weeks.
What this mobile app development agency builds
Native mobile apps.
iOS and Android. One codebase.
Every mobile app we build uses React Native with Expo. One codebase, native performance on both platforms. Not a web view, not a hybrid wrapper — real native mobile apps.
iOS mobile app development
Native iPhone and iPad apps. Push notifications, camera, biometric authentication, GPS, offline storage — all native iOS APIs, all fully supported.
Android mobile app development
Native Android apps from the same codebase. Same features, same performance, same quality. Google Play Store submission included.
Mobile app backend & infrastructure
Authentication, database, API layer, push notification services, analytics, crash reporting, CDN. Your mobile app launches with real production infrastructure.
App Store & Google Play submission
We handle the full submission process for both stores — screenshots, metadata, review compliance, and launch. Accounts belong to you.
Why choose this mobile app development agency
Everything a mobile agency should be.
Nothing it usually is.
One codebase, both platforms
React Native with Expo means one codebase produces native iOS and Android mobile apps. You get both platforms without paying for two separate builds.
Fixed-price mobile app development
Mobile app from £16,000. Complex mobile app with admin panel and integrations from £30,000. No hourly billing, no estimates that double, no surprise invoices.
8-week delivery to both app stores
Scoping and design in weeks 1–2. Mobile app development in weeks 3–6. Testing, App Store and Google Play submission in weeks 7–8. Two months, not six.
Talk to the person building your mobile app
No account managers filtering your feedback. No project managers scheduling status calls. You speak directly to the developer building your mobile app.
Full ownership of your mobile app
100% of the code, design, IP, and app store accounts. Complete Git repository handover. Walk away with everything. No agency lock-in.
Mobile app development agency pricing
Fixed price. Both app stores. No agency maths.
Mobile App Build
£16,000
8 weeks · Fixed price · iOS & Android
Native iOS and Android mobile app. Scoping, design, development, App Store submission, complete code handover. 8 weeks.
Best for: A focused mobile app that needs to launch on both platforms quickly.
Extensive Mobile Build
£30,000
8 weeks · Fixed price · iOS & Android
Complex mobile app with multiple user types, admin panel (web), payments, push notifications, integrations.
Best for: Mobile apps needing commercial depth — roles, admin, payments, APIs.
Mobile app development agency FAQ
Questions founders ask before hiring a mobile app development agency.
Ready to hire a mobile app development agency that delivers?
Book a free scoping call. Tell us about your mobile app, we'll confirm the platform approach and give you a fixed price. No commitment.