About this app
■ Description ■ Take picture of any graph, outline data with your finger and get the best fit math formula. After you paint few data points or the whole graph shape with your finger on the canvas grid, the app provides function formula definition and trend line for given data series automatically. App AI uses least squares regression function graphical solver for the best data fit. ■ How to control ■ Just paint data series on the canvas or type data with the keyboard, tap equal button and the artificial intelligence algorithm easily calculates function formula and plots trend line curve on the graph grid. You can also add any image of a graph into the background and outline main data points with your finger. Select from different function types and change function range to see effect of various prediction models on the final math formula and trend line in a graph. ■ Features ■ • Find formula for your math function. • Paint data points with your finger. • Add data to the canvas with the keyboard. • Add any image into the background. • The app features linear, quadratic, cubic, polynomial (up to 20th grad), power and logarithmic regression function models. • Run regression analysis with the simple click and find easily the least squares fit. • Create and share CSV data series with your project. • Use calculated best fit formula in your Excel spreadsheet (just Copy & Paste to your xlsx file). • Obtain RMSE – root mean squared error for each model. ■ For Who ■ Students, teachers, programmers, engineers, data scientists and all other math enthusiasts to demonstrate basic math behind function concepts. For your math homework, SAT, GCSE, A-level, IB exam or prep for university admission test. Improve your knowledge to be well prepared. ■ Do you love mathematics? ■ • Mathematics is amazing and sometimes surprisingly fascinating. • Mathematics is the Queen of Sciences. • Whenever there are Numbers, there is Beauty. • Math is the pure Music of Reasoning. • Math is Fun! Come and Join Us! ■ Just one more thing ■ We're working hard to bring you future FREE updates! Don't forget to rate us on the App Store. Any comments or suggestions are welcome and appreciated. Please feel free to contact us at email: RapojiApp@gmail.com
Latest release
What’s New
Use keyboard or fingerpaint to add data series.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 19, 2026 · 9:24 PM Free
Screenshots
