An experienced developer shares lessons learned after their iOS e-book reader app crashed for 50% of TestFlight testers. The core issue was an unmanaged cloud-sync process that froze the UI while downloading data in the background. Key insights include: confidence doesn't equal competence in new domains, simulator testing

9m read time From itnext.io
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What I know now (that I didn’t know last week)The week aheadThe thing nobody writes aboutWhat comes next

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