Support older iOS versions again (iOS 15 and 16)

The Fluxer TestFlight used to support iOS 15 and 16, but support was removed in a later build.

Support should be provided at least until the full App Store release, as TestFlight doesn’t let you download older builds, but the App Store does.

There are many people who use legacy iOS devices, even if we don’t make up a large percentage of the userbase currently. Some people may use them cause of preference, cause of a disability/injury, or cause of financial struggles.

• My girlfriend has an injury which causes her hands to shake when holding large objects, which makes typing on large phones hard.
• My only modern iDevice is an iPhone 15, but it got a bad battery batch or something, so the battery health degraded to 66% over two years. It doesn’t even last the school day even if I barely use it. I don’t have the money to get a new battery as my dad got laid off recently.

While the webapp exists, it doesn’t work in Safari on iOS 15. I haven’t tested it on 16. It does work inside of Reynard, a custom browser based on Gecko, but even then the webapp isn’t the greatest on mobile. The browser also requires your phone to be jailbroken, which most people either don’t want to, don’t know how, or can’t do. We may not be the biggest percentage of the userbase, but we’d be very thankful for this.