Standard, done properly
Large readable display with a live result as you type. Percent, brackets, +/− and backspace that just work, with correct order of operations.
A calculator,
done right.
Clean, fast and private. Scientific mode, history, unit converter and themes — with no ads and no internet permission.
Everything a calculator should do
Opens instantly, works completely offline and never shows an ad.
Scientific mode
sin, cos, tan and inverses, ln, log, eˣ, 10ˣ, x², xʸ, √, π, e, factorial and more. Degrees or radians, remembered.
Calculation history
Up to 200 calculations saved on your device. Tap to reuse a result, long-press to reuse the expression, copy or delete, swipe to remove.
Unit converter
Length, area, volume, weight, temperature, speed, time and data. Instant results, swap units with one tap.
Tip calculator
Set the tip with a slider or quick buttons and split the bill between any number of people.
Memory keys
MC, MR, M+, M− and Ans in scientific mode, so long calculations stay easy.
Light, dark or system
Pick a theme, toggle haptic feedback, thousands separators and keep-screen-on in Settings.
Private by design
No ads, no analytics, no tracking, no accounts. The only permission is Vibrate, for the key tap.
Screenshots
Light and dark, portrait and landscape, English and Hindi.
Download Arith
Free, no ads, no in-app purchases. Get it from the store you already use.
itch.ioStore page
APKPureStore page
Indus AppstoreStore page
Direct downloadv1.1.0 · 1.9 MB · signed release
Package com.prabhattiwari.arith · Requires Android 7.0 or newer · Installing the direct APK needs “Install unknown apps” allowed for your browser.
No adsNo internet permissionNo trackingNo account neededWorks offline
Contact
Questions, bugs or ideas? Write to arithapp@proton.me.
Arith is made by Prabhat Tiwari. Read the privacy policy.