AquaCalculator: Reef Tank

Alexander Karkossa

4.5

Ratings

10,000+

Downloads

USK: All ages

Age

Versions

Download Latest APK (2026-06-21-e469227, 22.2 MB)

About this app

NameAquaCalculator: Reef Tank

CategoryTools

PriceFree

Safety100% Safe

DeveloperAlexander Karkossa

Version2026-06-21-e469227

Packagede.charlex.aquacalculator

App ID53428

Updated2026-08-30

Requires8.0

AquaCalculator: Reef Tank is a tools app by Alexander Karkossa; at 10,000+ installs it is a smaller, more specialised release. 78% of raters give it full marks.

Free to download, though in-app purchases run €2.49 - €14.99 if billed through Play. Content is rated USK: All ages. It needs Android 8.0 or newer. 31 people have left a written review.

Rating distribution

5★164

4★34

3★1

2★1

1★11

Previous APK Versions All 16 ›

Frequently asked questions

01 Is AquaCalculator: Reef Tank free?

Yes. AquaCalculator: Reef Tank is listed as free on Google Play and offers in-app purchases (€2.49 - €14.99 if billed through Play).

02 Which Android version does AquaCalculator: Reef Tank need?

The current release requires Android 8.0. If your device is older, one of the 16 earlier versions listed above may still install.

03 How do I install the APK?

Download the file from the version page, open it on your Android device and allow installs from this source when prompted. XAPK bundles need the APKPure app or a split-APK installer (see the install guide in the footer). Always prefer the latest version unless you specifically need an older build.

04 Is the download safe?

Files are served by an established third-party mirror and are the same builds distributed to Play Store users; APK Rewind never repackages or modifies them. Check the developer name (Alexander Karkossa) and package name (de.charlex.aquacalculator) match what you expect.