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Hire a FlutterFlow DeveloperHire a FlutterFlow developer for the code the visual editor can’t reach

A FlutterFlow app is Flutter code you can export on FlutterFlow’s Basic, Pro and Max plans. App369 is one Flutter developer, Simon Dziak, who fixes that exported code. An App Fix Ticket covers one bug: a $450 diagnosis in 3 business days, credited toward the $1,200 fix. The Free plan has no code to hand over.

Fixed prices

All fixed-price offers

Something else? Describe your project

Do you need a developer?

When FlutterFlow can handle it, and when it needs a developer

  • 01

    Can FlutterFlow handle it on its own?

    Pages, layout, widgets and actions are what the visual editor is built for. If the change can be made there, make it there, so the project stays the one source of truth.

  • 02

    Is custom code failing to build?

    FlutterFlow lets you add custom code and, on paid plans, pub.dev packages. When a custom widget or action won’t compile, or a package clashes with the generated code, the fix happens in the exported Flutter project.

    MissingPluginException: the fixNull check operator used on a null valueA RenderFlex overflowed

  • 03

    Can users see each other’s data?

    If the app uses Firebase, the security rules decide who can read and change each record. Rules left open let anyone who finds your project read or edit the data.

    Firebase Security Rules AuditFirebase insecure rules alert

  • 04

    Is the store build failing?

    iOS and Android builds fail on things the editor doesn’t show: CocoaPods, Gradle versions and signing keys. An app bundle signed with a different key from the one registered with Google Play is one cause the Play Console rejects.

    App bundle signed with the wrong keypod install failedGradle assembleDebug failed

  • 05

    Are payments taken but nothing unlocks?

    A Stripe payment that succeeds while the account stays locked usually means the webhook that should update the user never ran, or ran without checking where it came from.

    Paid but not upgraded: the fix

  • 06

    Have you outgrown the editor?

    Once most changes happen in code, it can make sense to keep building the app as a plain Flutter project. That is a bigger job than one fix, and it starts with a written scope.

    Hire a Flutter developer

Before you hand it over

What FlutterFlow’s own docs mean for hiring a developer

These come from FlutterFlow’s plan comparison and its guide to pushing code to GitHub. Check them before you hire anyone, App369 included.

  • Which plan lets a developer see the code?

    Code download is on the Basic, Pro and Max plans, not Free. Pushing the project to GitHub, and the VS Code extension that syncs custom code files, are on Pro and Max only.

  • Where should the fixes go?

    FlutterFlow always pushes to a branch named flutterflow, and its docs warn that changes made directly on that branch are overwritten by the next push. Fixes belong on a separate branch, such as develop.

  • How do new FlutterFlow changes reach the fixed code?

    FlutterFlow’s docs describe opening a pull request from the flutterflow branch into develop, resolving any conflicts, then, after testing, merging develop into main to deploy.

  • Will you price it before you start?

    A fixed price for a written scope protects you from an hourly bill on code neither of you wrote. Ask for it in writing before any work begins.

  • FlutterFlow
  • Flutter
  • Dart
  • Firebase
  • Supabase
  • Stripe
  • GitHub

Error fixes

Flutter and Firebase problems Simon fixes

FlutterFlow apps are Flutter apps, so these apply. Each page covers one problem, with its sources and what to try first.

FAQ

Questions before you start

How much does it cost to hire a FlutterFlow developer?

App369 publishes fixed prices. An App Fix Ticket is a $450 diagnosis, credited toward the $1,200 fix. A Firebase Security Rules Audit with a fix pull request is $950. Anything larger starts with a written scope and a fixed quote.

Do I need to export my FlutterFlow code?

Yes. Simon works on the Flutter code your project exports. A code download needs FlutterFlow’s Basic, Pro or Max plan; pushing to GitHub needs Pro or Max.

Can I keep building in FlutterFlow after the fix?

Yes, on Pro or Max: FlutterFlow overwrites its flutterflow branch on every push, so fixes go on a branch such as develop, and each new push is merged in by pull request, resolving any conflicts. Basic has no GitHub push, so each new code download has to be compared with the fix by hand. Ask before you rebuild a screen that was fixed in code.

What do I need to hand over?

Read access to the GitHub repo FlutterFlow pushes to, or a zipped code download, plus a test login and the steps that show the bug. If the app uses Firebase, add the security rules files.

What isn’t included?

Work inside your FlutterFlow account (Simon never needs your FlutterFlow login), FlutterFlow plan fees, app store fees, new features beyond the named bug, and calls, except paid consultations ($100 per 15 minutes, paid upfront).

Who does the work?

Simon Dziak, who founded App369, does the work himself, in writing by email. On Pro or Max the fix comes as a pull request to your repo; on Basic it comes as a patch or zipped project you can review.

Sources

Not a fixed-price job?

Describe it and get a written quote

Send what you need built or fixed. You get a written scope, a fixed price and a timeline; Simon replies by email, usually within one business day.

Describe your project Instant quote

Prefer a call? Consultations are $100 per 15 minutes, paid upfront.