Summary
Free users are allowed full unrestricted use of the app up to a limit of 200 flight entries. Consider subscribing to Simply Log Pro to add infinite number of flights to your logbook.
Subscriptions do not auto-renew. Purchasing of any of the packages would unlock Simply Log Pro for the duration as stated by the package. Multiple purchases are allowed, and each purchase would stack upon one another. Read this article to learn how to manage your subscriptions.
You only need 1 subscription for multiple devices, as long as you use the same App Store account on your devices.
Adding New Flights
Once you hit 200 flight entires, you would need a subscription to continue adding flight entires to your logbook.
Imports
Below the 200 flights limit, you are able to initiate imports from LogTen Pro and Crew Connect calendar. These imports may bring your total flight logs to more than the 200 flight limit. But beyond that limit, you would not be able to initiate any more imports.
Subscription Expiry
Subscriptions do not auto-renew. Purchasing of any of the packages would unlock Simply Log Pro for the duration as stated by the package. Multiple purchases are allowed, and each purchase would stack upon one another.