For Power Check you need to contact HHS Software here:
PowerCheck - Helicopter engine trend monitoring.
It's good software that has been written by a rotary wing professional. Pricing is outstanding compared to equivilent software. The company I work for uses it extensively with excellent results. Aftersales support is also very good.
Cheers
ss
PS: No I don't have any connection to HHS software other than as a happy customer.