I paid for this app already, but now with this update they charge you again. Before you could use the paid app without having to make a Brainscape account (with hundreds of accounts with other things, I would rather not make another if I dont have to; the account is used to sync your vocab progress in the app with their website). Now when you update, the app comes "locked" and in order to unlock the app (although you bought it already) and "prove" you already purchased it, they want you to log-in to your Brainscape account. However, if you never made an account before (because you never had to), you cannot unlock the app. You are then forced to repurchase the app to unlock it. Either Brainscape is dishonest or there is a bug in their update.