How much does
an app cost?
Here are the numbers.

Transaction fees are charged by the payment provider and depend on the commercial model and payment volume.

Infrastructure costs depend on usage, traffic, storage and the services selected for the application.

Maps, AI, communications, specialist datasets and other third-party systems may charge based on consumption.

New features after the agreed build scope are separate product work rather than an unavoidable fee to keep ownership of the application.

At Wall & Fifth, focused production app builds start from £16,000 and larger, more complex builds start from £30,000. The final cost depends on scope: user types, workflows, platform choice, integrations, backend requirements and operational tooling.

The £16,000 tier is for a focused production product with a tightly defined scope. It can include product strategy, UX/UI design, frontend and backend engineering, authentication, database work, required integrations, testing, launch preparation and full code ownership.

The main difference is system complexity. Multiple user types, admin functionality, more involved workflows, several third-party integrations, payments, broader backend requirements or a larger product surface can move a build into the £30,000 tier.

It can. A web application has one browser-based delivery surface. Mobile work can include iOS and Android builds, device-specific behaviour, permissions, store preparation and testing across mobile environments. The correct comparison depends on the product scope rather than platform name alone.

Cross-platform development can reduce duplicated engineering because substantial parts of the application can be shared between iOS and Android. It does not mean every part is identical: platform-specific code and testing are still required where appropriate.

Usage-based third-party services are normally separate from the build price. Depending on the product these may include hosting, payment processing, email or SMS, maps, AI APIs, data services and developer-account fees. These costs vary with the services and usage involved.

A fixed price requires the scope to be defined before development begins and gives the client a known build cost. If requirements change materially, the scope can be changed transparently rather than allowing an open-ended hourly total to grow without a clear boundary.

Yes. Wall & Fifth hands over the finished codebase and associated intellectual property. There is no proprietary app-builder licence or requirement to keep paying Wall & Fifth to retain access to the product.