One of the reasons that I bought the EC120 was the fact that it records all excedences and the Pilot cannot cancel the flag. If you exceed MAUW and the simply pull enough pitch to lift it, and hence over-torque the machine, then you are going to get a flag, a bollocking and the bill. Same for over-temping. For this reason, I am confident of the history of the machine and the component parts and I know that if an exceedence occurs the engineers will have the correct calculations for impact on engine / gearbox life.
I agree with John E, the iBal is a splendid app. Given that you can configure it for your own aricraft - not just accept the standard machine - it is a really useful quick check.