Official web docs: user manual, help center, and privacy policy. Every page matches the app's actual behavior.
Get it on Google PlayThe full 18-section guide: UI tour, inline calc, variables, unit conversion, math engine, examples, troubleshooting, industry cases.
A quick-start guide to core features, math, settings, and FAQ.
In one sentence: we collect, store, transmit, and share none of your data — the app has no internet permission.



