Numio
rag-creation/numio
Install Numio
Download Zapstore
Download
- Scan the code with your phone’s camera
- Tap Download anyway if the browser warns about the file
- Allow your browser to install unknown apps if Android asks
- Open Zapstore and finish the onboarding
Open Numio in Zapstore
Open
- Scan the code to open Numio in Zapstore, or search for it there
- Tap Install, and Download if Zapstore asks you to confirm the developer
- Confirm in Android’s install dialog. Allow Zapstore to install unknown apps if Android asks
Unclaimed app
The catalog lists Numio from
rag-creation/numio
and signs its releases. The developer has not claimed it.
The file is still checked before you install it.
Are you the developer? Cryptographically prove you hold the key that signs it.
Clean, minimal calculator with live results as you type. Includes a built-in unit converter for length, weight, temperature, and more, plus local calculation history.
Numio is a clean, minimal calculator built with Kotlin and Jetpack Compose. No ads, no tracking, no internet permission — it never needs to talk to the outside world.
Features:
- Clean, minimal design with retro circular keys
- Live results — see the answer as you type
- Scrollable expression display, so long numbers are never truncated
- Calculation history saved locally with a Room database
- Built-in unit converter — Length, Weight, Area, Volume, Temperature, Time, Speed, Pressure
- Theme customization — 12 preset accent colors plus custom hex input
- Your chosen theme color is remembered across sessions
- Hand-drawn custom app icon
- A small hidden easter egg
- 100% offline — nothing ever leaves your device
This is a first solo project, built from scratch and open-sourced so anyone can use, inspect, or contribute to it.
Summary generated by Zapstore from source.
Original description, as the developer published it.
Latest release
The catalog lists this app from
rag-creation/numio
and signs its releases. The developer has not claimed it.
Are you the developer? Claim your app
It asks for no sensitive access. Data stays on the phone.
Release notes
- Fixed a crash when switching converter categories (for example Volume to Temperature)
- Converter shows "Number too large" or "Not a number" instead of crashing or staying blank, and accepts a comma as the decimal point (1,5)
- Converter result stays visible above the keyboard
- Landscape: the result is no longer hidden and key labels fit their buttons
- Custom colour: codes like GGGGGG now show an error
- Results like 0.1 + 0.2 now show 0.3
Comments
Loading comments…
More calculator apps
See more-
V
Vanilla
A cute and elegant calculator app for Android
-
C
Calculator
Clean, private calculator — no tracking, no ads, optional on-device AI.
-
D
DayCalcy
Simple ofline date calculator with reminder.
-
N
NerdCalci
Calculator for nerds with variables, syntax highlighting, and file sessions
-
C
Calculator
Calculator and unit converter for keypad phones, typed on the keypad
-
A
AlexCalc
Scientific calculator with LaTeX equation display, variables, units, complex numbers. Runs locally in your browser with WebAssembly, or as an Android app.
Get Numio the private way
Updates checked on your device, and every release verified before it installs.