Version 1.2 is a rebuild. LCKD.IN is now somewhere to write your own revision notes rather than read ready-made ones — the old subject feeds and the account system have gone, and everything now lives on your phone. Write a note, using LaTeX if you need maths. Tap Locked in when you're done with it, and it comes back later, when you're starting to forget. There's a guide in Settings if any of it needs explaining.

Version 1.1 is a rebuild rather than an update. LCKD.IN is now somewhere to write your own notes, rather than read a fixed set of ready-made ones. The old subject feeds have gone, and so has the account system — everything now lives on your phone. - Write your own notes, with LaTeX for maths and science notation - Live preview while you type, and a guide to LaTeX if it's new to you - Notes come back on a spaced-repetition schedule — read one, tap Locked in, and see it again later - A Library for browsing and filtering everything you've written - Any subject you like, rather than a fixed list - Works entirely offline. No account, no sign-in - Redesigned throughout