Keystone · iPhone app
Remember the words that matter.
Keystone is a text memorisation app. Paste the words you need to know by heart — a presentation, a speech, a poem, a passage — and Keystone helps you learn them through active recall. It hides words, reveals them, and tracks which lines you know and which still need work. It is built for people who need to stand up and deliver, or who simply want to carry a text inside their head rather than on a screen.
Learn by heart, not by screen.
Paste a presentation, a speech, a poem, or a passage you want to carry with you. Keystone hides words and asks you to fill them in, then shows you which lines you know and which still need work. It is active recall, not re-reading.
People use it for conference talks, wedding speeches, poetry they return to, study material, and Bible passages. The point is the same: to have the words inside your head so you can deliver them without looking down.