Is Numio Calculator safe?

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 un…

Developer: rag-creation
Category: Calculator
Earliest archived version: 12 Oct 2026
License: GPL-3.0-only (per F-Droid metadata)

02 / Release notes

Release notes from F-Droid

12 Oct 2026

1.0.7

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…

Full notes →

03 / Package identity

Technical fingerprint

Application IDcom.rr.numio

Latest APK SHA-2568795459ceb676e67feadc6bc9513ff0a1868b4330e52e4db93dd6ca6ad9e3b9f

Signing certificate7C:44:6D:EE:29:DA:B4:60:DB:CA:7F:42:5F:4B:60:3D:6C:3A:66:ED:69:D6:7C:7F:A2:DB:5D:ED:05:3A:01:05

MIN ANDROID24TARGET36ARCHITECTUREarm64-v8a · armeabi-v7a · x86 · x86_64

04 / Version archive

Documented releases

1 TOTAL

VersionReleasedAndroidArchitecture

1.0.712 Oct 202624+arm64-v8a, armeabi-v7a, x86, x86_64→

05 / Safety & access

Safety verdict

Authentic — file hash matches the source indexNo ads or tracking flagged by the source

IntegritySHA-256 verified vs source

SourceOpen-source · fdroid

Permissions1 declared · 0 sensitive

Signaturepresent

Anti-featuresNo known anti-features

Sensitive accessNo sensitive permissions

Declared permissions

com.rr.numio.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Tracker status: Not assessed by WIKI for Android.

06 / Sources

Evidence ledger

Each entry is a captured public reference backing this record.

RepositorySource package page↗Source codeSource repository↗