Since Brexit, a British app with European users answers to two data-protection regimes that are drifting apart. Most teams discover this the week a large customer sends a security questionnaire, which is the most expensive possible moment to find out. It is an architecture question, and architecture questions are cheap at the start and brutal later. If that questionnaire has already arrived, start with the vendor security review.
Two regimes, one data model
UK GDPR and EU GDPR still agree on the fundamentals: collect only what is needed, be clear what it is for, be able to delete it, be able to answer a subject access request. Where they diverge is in transfers and in what the regulators expect to see documented. Building for the stricter reading of both is barely more work at the start and saves rewriting the storage layer once you have real users in both markets.
Where the data lives is a decision, not an accident
The hosting region for your project is fixed before the build and written into the contract, before the first table is created. That is a very different conversation from discovering your vendor's default region is on another continent. If you also serve users in the EU, data hosted in the UK is covered by the European Commission's adequacy decision for the United Kingdom.
The deal
- App Check $2,000 first, so you know what you own before anything is built or moved
- Fixed price and scope agreed in writing before each step
- Market-ready app for iPhone and Android from one codebase from $83,300, macOS native where it belongs
- Full handover of code, cloud accounts, store listings and documentation
- Coordination in writing, so nothing waits for a shared meeting slot
No agency layer
London agency rates carry an office, a sales function and a project manager translating between you and the person writing the code. Here the architect who scopes the work builds it and answers for it afterwards. Fewer handoffs, and handoffs are where context dies.
See the numbers: app development cost.