Reckoning Skills (PFA) app icon

Reckoning Skills (PFA)

Helps you improving your mental calculation skills

SECUSO Research Group · org.secuso.privacyfriendlyrecknoningskills

Not rated yet 1K+ downloads v1.1.2 6.1 MB Android 4.2+ PEGI 3 · Everyone

  • Same certificate as the other version checked Details

At a glance

Latest version
v1.1.2 (6)
Updated
Apr 23, 2025 (1 year ago)
APK size
6.1 MB
Requires
Android 4.2+ (API 17)
CPU support
Any (no native code)
Category
Educational (game)
Listed since
Sep 28, 2023 (at least)
Permissions
1
Website
secuso.org
Developer contact
[email protected]

About this APK

Reckoning Skills (PFA) is a game by SECUSO Research Group in the Educational category, listed since at least September 2023. It has no native code, so it runs on any Android processor.

Since version 1.1.1, the APK grew from 4.3 MB to 6.1 MB. It asks for 1 permission, none of them sensitive. It asks for the same permissions as version 1.1.1.

What's new in v1.1.2

Updates to Android 14.

Description

From the listing uploaded by “appupdater”.

Privacy Friendly Reckoning Skills helps you improving your mental calculation skills in the four basic calculating operations. For each game, the player can choose between the four basic arithmetic operations and four difficulties (exercises up to 10, 100, 1000 and 10000). After finishing an exercise round the player receives a score which depends on the number of exercises answered correctly and the time it took to answer all ten exercises. After every game there is an overview which shows whether the exercises were solved correctly. It is also possible to choose "Direct Feedback" in the settings. If direct feedback is chosen, the player will receive feedback whether the exercise was solved correctly after each single exercise. How does Privacy Friendly Reckoning Skills differ from other similar apps? 1) No permissions Privacy Friendly Reckoning Skills does not require any permissions. For comparison: The Top Ten of similar apps from the Google Play Store requires an average of 3,4 permissions (in November 2017). These are for instance the location permission or the permissions to access, modify or delete storage. 2) No advertisement Moreover, Privacy Friendly Ludo distinguishes from many other applications in the way that it completely relinquishes advertisements. Advertisement might track a user's actions. It could also shorten battery life or use mobile data. This App requires minimal permissions and is part of the Privacy Friendly Apps group developed by the research group SECUSO at Karlsruhe Institute of Technology. More information can be found at https://secuso.org/pfa You can reach us via Twitter - @SECUSOResearch (https://twitter.com/secusoresearch) Mastodon - @SECUSO_Research@bawü.social (https://xn--baw-joa.social/@SECUSO_Research/) Job opening - https://secuso.aifb.kit.edu/english/Job_Offers_1557.php

Version history

2 versions are listed, going back to v1.1.1.

All 2 versions

Security & authenticity

Security rating: Trusted

Signing certificate

  • Certificate issued to “Philipp Rack” Not the developer's name (“SECUSO Research Group”). Names in certificates can't be verified, so this alone proves nothing.
  • Same certificate as the other version checked

Store checks and file details

  • Developer signature verified Apr 23, 2025
  • Signed byCN=Philipp Rack
  • Signing certificate (SHA-1)CE:01:A6:12:18:B9:7A:C4:DE:AA:75:DA:4E:5A:FB:DA:05:9D:FF:20
  • File MD5d490173b886c0e6e1701a5a577e15171
  • 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)

Reckoning Skills (PFA) requests 1 permission, none of them sensitive.

Required hardware & features

Reckoning Skills (PFA) APK: questions and answers

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

Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.

Is the Reckoning Skills (PFA) APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. It is signed with the same certificate as the other version checked. After downloading, check that the file's MD5 is d490173b886c0e6e1701a5a577e15171.

Tags

More Educational games