Log10 is not a one time fee. You have to keep buying it if you want it to keep working. Radar stopped working in the v5 app when iOS 5 released. You had to update your app to get the features working again, which domino's into buying everything so you're trapped into a very expensive ordeal. They discontinued support of a broken app and to get your app to work you have to buy v6. They don't get it that if you buy a new phone you can't use an older version of iOS so when you get iOS 5 on your new iPhone or iPad and your purchased apps are synced in from iTunes they will not work - so you have to buy again and again and again! Robbery! They just keep blaming Apple and won't accept responsibility and fix the issues. No reason they couldn't keep log10 v5 in the app store and fix it and release log10 v6 along side it as they are completely separate and don't talk to each other.

I looked at the Logbook Pro page and the PC edition is a one time purchase, there is no subscription. Check it out at the bottom of Logbook Pro Flight Log Software and they don't charge for updates, their December newsletter states it's 14 years they've been offering free updates. Their apps are free but you just pay the small fee for cloud sync, you pay for one or the other, the app or something else. It's far less expensive at 19.99 a year instead of nearly $300/year with log10 unless you get it at a discount which they were bullied into doing more than one day from the all the screaming. I won't be suckered again!