I was going to include a snarky comment about wanting iOS to graduate to a big boy memory system like a big boy OS but decided to be more polite. :) Rule of th

I was going to include a snarky comment about wanting iOS to graduate to a big boy memory system like a big boy OS but decided to be more polite. :) Rule of thumb is an app can allocate approximate 50% of total device memory before crashing. But there's no hard limit and it depends on your allocation pattern. If you request too much too fast it'll crash as well. Sometimes you have to let it fail and spin for 3 seconds trying to allocate again hoping it'll go through. Sometimes it will and sometimes it won't!