iOS Provisioning Profiles and Code Signing Explained (2026)iOS provisioning profiles and code signing explained in plain terms — certificates, profiles, the four profile types, and how to fix the most common signing errors.Jan ThalheimSep 29, 2026
What Is an .ipa File? (And What's Inside One)An .ipa file is the iOS app package you install on a device. Here's what an .ipa is, what's inside it, and how it differs from an .apk or .aab.Jan ThalheimSep 24, 2026
.ipa vs .apk vs .aab: Mobile App File Formats Explained (2026)The difference between .ipa, .apk and .aab files explained — which platform uses each, which you can install directly, and how to convert an .aab to an APK.Jan ThalheimSep 22, 2026
Apple Developer Program vs Enterprise Program: Which One Do You Need?Apple Developer Program ($99) vs Enterprise Program ($299) explained — who qualifies, what each allows, and why enterprise certs aren't for external testers.Jan ThalheimSep 17, 2026
How to Fix "Untrusted Developer" on iPhone (2026)Seeing "Untrusted Developer" when installing a test app on iPhone? Here's exactly how to trust the app in Settings — and why iOS shows the warning.Jan ThalheimSep 15, 2026
The Apple Developer 100-Device Limit: How It Works and How to Stop Hitting ItApple's 100-device limit explained — it's 100 per product type per year, disabling doesn't free a slot, and it only resets at renewal. Plus how to work around it.Jan ThalheimSep 10, 2026
