In reply to Edna.

@Edna: You don't need to uninstall Dorico from your iPad if you cancel your subscription or buy the Lifetime Unlock option, so it should be safe as far as your existing projects go. But it's always a good idea to make sure you have your projects backed up anyway!

I really do recommend you hold on a little longer before buying the Lifetime Unlock because there will be a sale coming up soon, and you'll be able to buy it for a lower price, even taking into account another month's worth of subscription.