Type a topic — any topic — and Schlr quizzes you on it. It figures out what you know, keeps the questions right at the edge of it, and fact-checks everything before you see it.
Join the TestFlight beta Free. No account. iOS 26 or later.
What it does
Most quiz apps ask everyone the same questions. Schlr rates you and every question on the same scale — like chess ratings — and picks each next question so you're stretched, not stuck.
Every answer nudges your rating and the question's. The quiz stays hard enough to teach you something, easy enough that you keep going.
A second, independent AI pass has to confirm each question before it counts. If the checker isn't sure, the question is thrown out.
Productive doomscrolling. Read a short lesson checked against real sources, get quizzed on it, then follow a thread to the next topic. Repeat until bedtime.
See where you stand across topics. Acing hard questions counts for more than a streak of easy ones.
The AI runs on your iPhone, or on Apple's Private Cloud Compute. Prefer your own model? Point Schlr at any endpoint — the key never leaves your Keychain.
Good questions get pooled, so every device gets them instantly — even older phones that can't run the AI, even offline.
See it
These are actual screenshots — the questions were generated and fact-checked by the app while we took them.
How it works
"Roman aqueducts." "Baking chemistry." "The Meiji Restoration." If you can name it, you can study it.
The quiz calibrates as you go and locks onto your level. Keep going as long as you like — or fall down an Explore rabbit hole.
Bad question? Flag it or swap it. Your feedback feeds the shared bank, so the whole thing gets better as people use it.
The fine print, up front
The app discloses it. The reason to trust it anyway: nothing is published unless an independent fact-check stands behind it.
No sign-up. No analytics. No third-party code at all. The only thing that leaves your device is anonymous question content for the shared bank.
Early testers shape the question bank everyone else inherits. Your flags and answers literally make the app better.
Request a TestFlight invite Link coming soon · requires iOS 26+