That software is buggy
On my 5DmkIII it keeps reading 9834 actuations while I have already taken 11587 shots with it. My firmware is 1.2.3 and my OS is 10.6.8. I did of course a power cycle and actuated several more times and power cycles to check. Whatever, it keeps stuck to 9834 actuations which is simply a wrong reading. Dont buy this software, you wont be satisfied!
SqAR about
ShutterCount, v1.2