I’ve received reports of Removr crashing in 3.1.3, but there are no crash logs available in iTunes Connect and I have no 3.1.3 device to test it on. My iPhone 3GS can no longer be downgraded to 3.1.3, even using Cydia, since I don’t have a saved SHSH.
I’m willing to trade my iPhone 3GS with 4.0.1 (no SIM installed) for an iPhone or iPod Touch running 3.1.3 or earlier. If I can’t get a 3.1.3 device, I’ll make the next version require 4.0 as the minimum OS version, since I don’t want to have an app that crashes and I can’t track down or fix the crash without a device running 3.1.3.