||What happens to my purchase when I buy another handset (mobile phone)? Do I have to buy the app again
||If the handset is using the same iTunes or Google Play account, then the app can be transferred to the new handset.
||I want to buy for my PC and laptop. Would I have to buy another one if my PC or laptop stops working?
||No, you can transfer a license to a new laptop or PC. Just write to Nailangs support and request a transfer.
||Would this app expire and would I have to renew the purchase every year?
||The app does not expire. Once you have purchased a license, it will continue to work forever.