I'm building a small app in Kotlin as a hobby project for some friends. It currently targets Android, but I'd like to create an iOS version too. I'm still learning Kotlin and sometimes use AI tools to help me understand unfamiliar code.
From what I've read, building and signing an iOS app generally requires access to macOS and Apple's development tools. I'm also confused about distribution: without Apple's paid developer membership, an installed app may need to be manually re-signed every seven days, while the paid membership costs about $99 per year.
I'm considering buying a 2014–2018 Mac mini, but I'm concerned that older hardware may not support newer versions of Xcode well. Would an older Mac mini be practical, or would renting a cloud-based Mac be a better option? Have I misunderstood anything about iOS development, app signing, or the seven-day renewal limit?
2 Answers
Your understanding is mostly right. You can sideload an iOS app without paying for the developer membership, but the free signing period is generally limited to seven days, so the app has to be re-signed and reinstalled regularly. That approach is also fairly inconvenient for people who aren’t comfortable with technical setup. TestFlight and normal App Store distribution require the paid Apple Developer Program membership.
For occasional compiling or testing, renting access to a cloud Mac may be more practical than buying an older Mac that could struggle with the version of Xcode you need. The best choice depends on how often you’ll use it and how much cloud access costs where you live.
A 2018 Mac mini can still be useful, but compatibility depends heavily on the macOS and Xcode versions required by your project. Older Macs may stop receiving current software support, and newer Xcode releases are important for building against current iOS versions. Check the exact macOS version supported by the machine and compare it with the Xcode version you plan to use before buying.
The seven-day limit applies to apps signed with a free personal Apple account for testing on your own devices. A paid developer account provides longer-lived signing and access to services such as TestFlight, but it doesn’t eliminate all Apple requirements or guarantee that every app can be distributed however you want.
That clears up the certificate issue. I’ll compare the Xcode requirements first and may try a cloud Mac before purchasing older hardware.
If you only need a Mac every now and then, a hosted Mac mini is probably the safest starting point. It lets you test your workflow before committing to older hardware.