I'm on the Eris, and its not an "app limit", its a RAM issue. Once your memory used gets to around 80%+ and you reboot, you have load issues. I was doing various tests and decided to throw in a larger app which took a lot of space.
there must be a fight for memory on boot, when the processes dont get the space they need, they crap out and die, killing service there after.
our Eris discovery is here:
Eris stops responding after reboot!
The issue is obvious that its not a hard limit, since I've got roughly 94 third party apps installed. but if you keep an eye on the MEmory used you'll notice sometime after 80% it dies out on the reboot.