Comet

Comet is a development environment for the Lua language for Android.

Dr. Sidi HAMADY · cc.sidi.SigmaScript

Not rated yet 50K+ downloads v3.8.0 7.1 MB Android 8.1+ PEGI 3 · Everyone

Download APK 7.1 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v3.8.0 (49)
Updated: Mar 29, 2026 (6 months ago)
APK size: 7.1 MB
Requires: Android 8.1+ (API 27)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Education (app)
Listed since: Dec 16, 2022 (at least)
Permissions: 4
Website: hamady.org
Developer contact: [email protected]

About this APK

Comet is an app by Dr. Sidi HAMADY in the Education category, listed since at least December 2022. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 2.0.0, the APK shrank from 10.3 MB to 7.1 MB and the minimum Android version rose from 8.0 to 8.1. It asks for 4 permissions, none of them sensitive. It asks for the same permissions as version 3.6.0.

What's new in v3.8.0

* Minor UI changes.

Description

From the listing uploaded by “appupdater”.

Comet (formerly SigmaScript) is a development environment for the Lua scripting language for Android with built-in Lua scripting engine. It is mainly dedicated to numerical computing and data analysis. Features: Built-in Lua scripting engine, numerical and data analysis modules, syntax highlighting, included Lua samples and code templates, output area, save/open to/from internal or external card, etc. The main goal of Comet is to provide an editor and scripting engine for Lua on Android, particularly suitable for numerical computing and data analysis. It includes modules for linear algebra, ordinary differential equations, data analysis and plotting, sqlite databases, etc. With Comet, you can learn programming on your smartphone or tablet and develop algorithms with one of the most elegant and fast scripting languages.

Version history

3 versions are listed, going back to v2.0.0. Since v3.6.0 it requires Android 8.1+.

v3.8.0 LATEST Mar 29, 2026 7.1 MB TRUSTED v3.6.0 Jan 20, 2026 7 MB TRUSTED v2.0.0 Jan 5, 2026 10.3 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Mar 29, 2026.
Certificate issued to “SIDI.CC” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Mar 29, 2026
Validated against Google Play Mar 29, 2026
Signed byCN=Sidi HAMADY, O=SIDI.CC, L=Metz, C=33
Signing certificate (SHA-1)21:1A:D1:A8:AE:F2:E7:83:DB:FE:1A:7A:45:F6:09:E0:2F:4B:53:53
File MD508f31c6bd382f948cadb4803ac824aa0
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (4)

Comet requests 4 permissions, none of them sensitive.

Foreground service special use android.permission.FOREGROUND_SERVICE_SPECIAL_USE
Internal broadcast protection (app-defined) cc.sidi.SigmaScript.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Run foreground services android.permission.FOREGROUND_SERVICE
Show notifications android.permission.POST_NOTIFICATIONS

Required hardware & features

Basic touch input android.hardware.faketouch

Comet APK: questions and answers

Is there a version of Comet for older Android phones?

The current version needs Android 8.1 or later. Version 2.0.0 is the newest listed build that installs on Android 8.0 and later. Get version 2.0.0 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Comet APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 08f31c6bd382f948cadb4803ac824aa0.