Hello there! Hope you don't mind if I join in.
The behavior both you (Xorcist) and Arcadio describe, sounds like an automatic app shutdown due to insufficient memory.
(In case anyone's interested: That's standard behavior on both iOS and Android, where they'll start closing apps to regain memory. Usually background apps, but in extremis, also those that're currently running. Ever had Safari / Chrome just close on you in the middle of a browsing session? 8/10, that's what it was.)
The smooth thing to say is that we're looking into ways of reducing the memory footprint (and we are). To be very frank with you, we can't yet say how far we'll succeed in that.
(In case you're still interested: The game itself had no real change to its start-up memory footprint between Fo+1F and HbD. A current hypothesis (that may be wildly inaccurate) is that there is an increase due to one of the middlewares (like Unity). This patch updated several of them to their first post-iOS9 versions. Sometimes, what's optimized for the younger OS, runs worse on the older. This isn't very easy to verify, though.)
tl;dr: We're trying to make this game work on as many of your devices as possible, but if I promised you specifics, I might be a liar.
Question 1: OK, but is there a way of reducing memory consumption manually?
Two things that some of you may have already done:
- Close all background apps.
- Some (itunes, Spotify, messengers, etc.) reserve memory and have high system priority, so that the new app may close before them.
- Restart your device.
- It's not unusual for a device that has been in use for years to gather one or two apps with memory leaks (program parts that slowly keep grabbing memory due to a bug). Switching it on and off again is the nuclear option for temporarily plugging those leaks.
For some of you, that may be enough. I'd certainly be happy to hear it.
Question 2: So what about the OS support thing?
It's definitely true that Apple continue supporting iOS7 for the end-user. You can still download the update, you'll be answered if you have customer support questions, etc.
At the same time, Apple has re-built (and significantly improved) a whole lot of their developer-facing systems over the last two years. For example, they've completely changed the standard way of testing in-development apps (Google "TestFlight" if you want the details). As a result, a lot of the infrastructure we use to build and test apps pre-supposes iOS8 and younger. This is one of the reasons verifying this isn't very easy for us right now.
When Andrew asked me about this issue before, I answered with my 'developer goggles' on. That's my bad. Sorry for the misunderstanding.