bubble → flutter migration
This is a Flutter rebuild, not an export or a web-view wrapper. We build the iOS and Android client beside your live Bubble app, then move the backend only if the audit says it should move.
01 · choose the boundary
The first choice is whether the backend still earns its place. A Flutter client can call Bubble's APIs while data and workflows stay put. If Workload Units, latency or platform control are part of the reason for leaving, the backend moves as well.
client first
Replace the mobile experience and keep Bubble as the source of truth. This is the smaller migration when the backend still works and the problem sits in the mobile interface, store release process or native features.
full control
Move the client, data and workflows when Workload Units, latency or platform control are part of the problem. The app talks to typed APIs and Postgres, so you control the mobile client, API and database directly.
02 · before code
A list of screens is not enough. The audit covers the states and dependencies that determine the real scope, including expired sessions, store billing and weak connections.
Every screen, role, route and error state, including what appears after an expired session.
Login, signup, password reset, social providers, role changes and what happens when a token expires on a phone.
What must load immediately, what can be cached, what happens on a weak connection and which writes can conflict.
Stripe, App Store and Google Play billing follow different rules. We map which system owns each entitlement before anything moves.
Notification permissions, payloads, device tokens, universal links and the route each tap must open inside the app.
Camera, files, location, biometrics, background work and the plugins whose behavior must be rebuilt in Flutter.
03 · the method
Mobile releases are not web cutovers. People keep older versions on their phones, and Apple and Google review new builds. The Bubble app stays in service until the Flutter release is ready.
We spend one week in the live app, the Bubble editor and the store builds. You get a parity map, architecture decision, risk list and fixed scope.
We decide whether Flutter can use the Bubble backend first, or whether data, workflows and APIs should move with the client.
We rebuild each Flutter screen against behavior people already use. The published Bubble app keeps running while this happens.
We start with internal testing, pass store review and expand the rollout after the new release proves stable. The old client remains the rollback path until then.
04 · what is not automatic
Flutter does not decide which flows to keep, how subscriptions move or what should work offline. Those choices belong in the migration plan.
Plugins do not map one to one. App Store and Google Play billing follow different rules from Stripe, and push behavior differs between iOS and Android. The audit puts those decisions in the scope instead of leaving them for the end.
05 · faq
No. This service is a planned rebuild, not a code export. We use the live Bubble app as the specification, then rebuild the screens and integrations that belong in the Flutter client.
No. A Flutter client can use Bubble's Data and Workflow APIs while Bubble remains the source of truth. If Workload Unit costs, latency or platform control are also part of the problem, the audit can scope an owned API and database.
Flutter. The result is a Dart and Flutter repository you own, not a project in another visual builder.
The audit takes one week and costs $500. Half is credited against a migration if one follows. You keep the parity map, architecture decision, risk list and fixed scope either way.
The current Bubble app stays available while we build and test Flutter. We start the store rollout after the replacement is ready.
The audit takes one week and costs $500. Half is credited against a migration if one follows. You keep the architecture decision, parity map, risks and fixed scope whether or not we build it.