All versions of HydroColor: Water Quality App

com.h2optics.hydrocolor · 3 versions

HydroColor: Water Quality App has 3 versions listed, going back to v2.2. Since v2.2 the APK grew from 41.4 MB to 64.7 MB.

All 3 versions checked are signed with the same certificate (D5:1E:E5:95…, issued to “H2Optics”), so they can update one another.

Versions, newest first

v2.4 (15) LATEST

Uploaded Jul 20, 2025 64.7 MB Android 5.0+ TRUSTED

c278176461045c8d44b05938fb851249

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What's new (as uploaded)

Back-end updates to use the latest APIs and frameworks.

v2.3 (14)

Uploaded Jun 13, 2024 44.9 MB Android 5.0+ TRUSTED

83bcc7683d2b76153481a84991ba3cdc

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What's new (as uploaded)

1. Minor change to turbidity calculation to match Leeuw and Boss, 2018 2. Fixed back button behavior on welcome screen

v2.2 (13)

Uploaded Jun 9, 2023 41.4 MB Android 5.0+ TRUSTED

f2f3425d7e62d85de5931be675d7366d

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What's new (as uploaded)

Minor updates to improve app responsiveness