Level 66

Not only for the Masters of math !!!

Grzegorz Byszewski · com.grzes.sixtysix

Not rated yet 100+ downloads v1.5 1.6 MB Android 5.0+ PEGI 3 · Everyone

Download APK 1.6 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v1.5 (6)
Updated: Aug 2, 2026 (2 months ago)
APK size: 1.6 MB
Requires: Android 5.0+ (API 21)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Graphics: OpenGL ES 2.0+
Category: Educational (game)
Listed since: Jul 25, 2023 (at least)
Permissions: 1
Website: gbdroid.blogspot.com
Developer contact: [email protected]

About this APK

Level 66 is a game by Grzegorz Byszewski in the Educational category, listed since at least July 2023. 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.

It asks for 1 permission, none of them sensitive.

What's new in v1.5

Upgrade LibGdx

Description

From the listing uploaded by “appupdater”.

Amazing Educational Game. Practice Math in a New Way ! Keep your mind healthy, test your mental math and exercise your brain. Verify that You are a Master of Calculation. 66 Great Levels Waiting for You! How to play: Set correct values on both analog clocks, in such a way to solve the equation. The sum of the first clock multiplied by the sum of the second will allow you to complete the level and advance to the next. Difficulty: Hard. Have Fun:)

Version history

2 versions are listed, going back to v1.4.

v1.5 LATEST Aug 2, 2026 1.6 MB TRUSTED v1.4 Jan 5, 2026 1.5 MB TRUSTED

All 2 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Aug 2, 2026.
Certificate issued to “Grzegorz Byszewski” This is the certificate of the Google Play version.
Same certificate as the other version checked

Store checks and file details

Developer signature verified Aug 2, 2026
Validated against Google Play Aug 2, 2026
Signed byCN=Grzegorz Byszewski, OU=Grzegorz Byszewski, O=Grzegorz Byszewski, L=Warsaw, ST=Poland, C=48
Signing certificate (SHA-1)68:F7:CE:99:B4:D1:27:83:41:17:F9:C2:48:17:A9:0A:F1:E1:46:F8
File MD50adb5da6bd38512f8fe0423e16ec7f11
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 (1 other version compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (1)

Level 66 requests 1 permission, none of them sensitive.

Internal broadcast protection (app-defined) com.grzes.sixtysix.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Required hardware & features

Basic touch input android.hardware.faketouch
Landscape screen android.hardware.screen.landscape

Level 66 APK: questions and answers

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 Level 66 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 other version checked. After downloading, check that the file's MD5 is 0adb5da6bd38512f8fe0423e16ec7f11.