Recently I mentioned an excellent library for easily creating customizable prompts when a newer version of your app is available called Harpy.
Here’s a helpful library for after the user has migrated to a new version of an app called MTMigration from Mysterious Trousers.
What MTMigration allows you to do is create code that runs only after your user has changed the version of your app.
The library also does a check to see if the user has upgraded by more than one version, and can run the code that was missed by not updating to those previous versions.
You can find MTMigration on Github here.
Perfect if you have some new settings that need defaults when the user upgrades an app.
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Original article: iOS Library That Runs A Specific Code Block Only When User Upgrades An App
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