Errly: AI Tutor & Error Book

Snap any math, physics or chemistry problem. Get step-by-step guidance, not just answers. Save mistakes, review on time, and practice similar problems until they stick.

Turn every mistake into progress.

Errly is your AI-powered math tutor and error notebook. Snap a photo of any math problem — homework, a worksheet, or a textbook page — and Errly reads it, then walks you through the solution step by step. No dumped answers, no shortcuts: every explanation is built to help you understand the concept, not just copy it down.

SNAP ANY MATH PROBLEM Point your camera at a handwritten or printed problem. Errly reads even messy handwriting, so you never have to retype a thing.

LEARN WITH GUIDED STEPS See the full reasoning behind every solution, one step at a time. Errly is designed to teach — try the problem yourself first, then use Check Mode to verify your own work.

BUILD YOUR ERROR NOTEBOOK Every problem you save becomes part of your personal error book. Mark why you got it wrong, tag it by topic, and turn patterns in your mistakes into a clear study roadmap.

SMART REVIEW, RIGHT ON TIME Errly brings your saved mistakes back with spaced review flashcards, timed to when you're most likely to forget — so the concepts that tripped you up actually stick.

TRACK YOUR MASTERY Watch your mastery of each topic grow over time, based on your own error history. No guesswork about what to study next.

PRACTICE BUILT FROM YOUR OWN MISTAKES Get extra practice problems generated from the exact concepts you struggle with most, so study time goes where it actually counts.

BUILT FOR REAL STUDYING • Covers the math you're actually studying — algebra, geometry, and beyond • Built for exam prep, nightly homework, and everyday practice • Self-Discipline Mode keeps the answer hidden until you've worked through the guided steps • Export your error notebook to share with a tutor, teacher, or parent • Your data, your control — export or delete it anytime

Errly is free to start. Basic and Pro plans are available for students who want unlimited error notebook storage, watermark-free PDF exports, and priority processing — with a free trial for Pro.

Whether you're prepping for a test, working through nightly homework, or just trying to stop making the same mistake twice, Errly turns every wrong answer into a lesson that sticks.

Download Errly and start mastering your mistakes today.

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