If you’re getting ready to publish a Flutter app on Google Play, closed testing is one of those steps that’s easy to underestimate.
The app may work perfectly on your own device, but testing with other people can reveal issues that aren’t obvious during development, especially differences in Android versions, screen sizes, permissions, navigation, and device-specific behavior.
Here are a few things I recommend checking before starting a closed testing round.
1. Test the release build, not just debug
Make sure you’re testing the actual release build that you’re preparing for Google Play.
A Flutter app can behave differently between debug and release builds, so test the release version on physical Android devices before inviting testers.
Pay particular attention to:
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App startup and first launch
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Login and registration
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Network requests
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Push notifications
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Deep links
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Permissions
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Image/file uploads
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Background tasks
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In-app navigation
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App performance
2. Test on different Android devices
Testing on only one phone doesn’t give you much coverage.
If possible, test across different Android versions and devices with different screen sizes and hardware capabilities.
For Flutter apps, this can help uncover things such as:
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Layout problems on smaller screens
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Keyboard/input issues
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Permission behavior
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Performance differences
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Crashes on specific Android versions
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Problems with system back navigation
You don’t necessarily need dozens of physical devices. Even a small group of testers using different devices can provide useful feedback.
3. Make the testing instructions simple
Testers shouldn’t have to figure out what they’re supposed to do.
Give them a short list of actions to perform. For example:
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Install the app.
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Create an account.
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Complete the onboarding process.
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Try the main feature.
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Test a few common actions.
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Report anything that doesn’t work as expected.
Specific tasks usually produce much more useful feedback than simply asking someone to “test the app.”
4. Check the Google Play testing setup
Before sending the testing link around, make sure the correct testing track, testers, and app version are configured in Play Console.
Also make sure your testers understand that they need to join the testing program before they can access the test version.
If you’re working with external testers, give them clear instructions rather than assuming everyone is familiar with Google Play’s testing process.
5. Don’t ignore feedback that isn’t a crash
Testing isn’t only about finding crashes.
A tester might report something like:
“I couldn’t figure out what to do after creating an account.”
That can be just as valuable as a crash report.
Look for problems with:
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Usability
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Navigation
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Confusing buttons
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Missing feedback after an action
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Slow screens
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Unexpected behavior
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Text that’s difficult to understand
Real users interact with an application differently from its developer.
6. Keep a simple testing checklist
For each testing round, I like keeping a basic checklist containing:
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Device model
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Android version
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App version
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Feature tested
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Result
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Bug/issue found
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Severity
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Tester comments
This makes it much easier to identify patterns when several people report similar issues.
Getting testers
Finding people who can actually test the app can sometimes be more difficult than preparing the testing checklist itself.
For developers who need additional real-device testers, GetAppTesters provides human Android testers for Google Play closed testing. The idea is to give developers access to testers using their own Android devices rather than relying entirely on emulators or internal testing.
You can find more information here:
Obviously, the right testing approach depends on the app. A simple utility app may need a very different testing plan from a social app, game, or app that depends heavily on notifications and background processing.
For Flutter developers preparing their first Google Play release, though, spending some time testing the actual release build with people who weren’t involved in developing the app can uncover a surprising number of issues before production.