# Waterline Log — Aquarium test journal

> Aquarium test journal (iPhone/iPad app by MIANJUN LIU.)

- Source: https://appshunter.io/ios/app/waterline-log/id6772081892 (this page in markdown: same URL + `.md`)
- Developer: [MIANJUN LIU](https://appshunter.io/developer/1807915951)
- Category: Lifestyle
- Price: Free (on sale, was $2.99)
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-05-26
- Data updated: 2026-08-30
- User reviews in markdown: https://appshunter.io/ios/app/waterline-log/id6772081892/reviews.md

## What is Waterline Log?

Waterline Log is a focused aquarium test journal for freshwater, planted, and shrimp tank keepers.

Record pH, ammonia, nitrite, nitrate, temperature, TDS, GH, and KH readings in seconds. Add water changes, filter cleaning, fertilizer, medication events, livestock notes, and general notes to the same timeline so your tank history stays clear.

Waterline Log is designed for careful record keeping. It shows recent readings, trends, and maintenance context, but it does not diagnose disease or prescribe treatment.

Features:

- Fast water-test logging
- Freshwater, planted, and shrimp tank profiles
- Water change, filter clean, fertilizer, medication, livestock, and note events
- Latest readings dashboard
- Timeline and trend views
- English, Simplified Chinese, and Japanese in-app language switch
- Local-only storage with no account and no tracking


## Version history (last 1 release)

### 1.0.0 — 2026-05-26

No release notes.

## More apps by MIANJUN LIU

- [Bat Talk](https://appshunter.io/ios/app/bat-talk/id6758876134)
- [e-Woms](https://appshunter.io/ios/app/e-woms/id6759003977)
- [言之有物](https://appshunter.io/ios/app/id6759166169)
- [P2P点对点聊天](https://appshunter.io/ios/app/p2p/id6759565433)
- [MediShelf Family](https://appshunter.io/ios/app/medishelf-family/id6770296745)
- [CastLedger Fishing Logbook](https://appshunter.io/ios/app/castledger-fishing-logbook/id6770474228)

All apps by MIANJUN LIU: https://appshunter.io/developer/1807915951

## Related topics

[nitrate](https://appshunter.io/ios/topics/nitrate)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*