Geometry Calculator for School vs MistakeBook

Geometry Calculator is a pure geometry calculator with no AI, designed mainly for schools where in-app subscriptions are blocked. It's ideal for the Volume Purchase Program. The app helps students solve volume, surface area, and perimeter problems with step-by-step solutions and real-time shape previews. You get calculations, theorems, and formulas for all 120 geometric shapes, such as triangles, polygons, prisms, and spheres. There are no ads, and all calculations work offline. The app also includes a weight calculator with built-in materials, and you can add your own materials too.

Capture every wrong answer in seconds. Sort mistakes by subject, tag key topics, and build a personal error bank—no account required. Preparing for midterms, finals, or standardized tests? Spaced review quizzes follow the forgetting curve so weak spots come back at the right time. See progress charts and daily check-ins to stay on track. • Log mistakes with photos, notes, and difficulty tags • Organize by subject, chapter, and custom tags • Review mode: quiz, practice, and spaced repetition • Ebbinghaus schedule for smarter recall • Stats dashboard: mastery trends and weak areas • Import/export backup—data stays on your device Built for students who want a simple, private way to turn errors into higher scores.