# Aquarium Tracker: Fish & Reef — Water Test Log & Tank Care

> Water Test Log & Tank Care (iPhone/iPad app by Thomas Rothmeier.)

- Source: https://appshunter.io/ios/app/aquarium-tracker-fish-and-reef/id6824413172 (this page in markdown: same URL + `.md`)
- Developer: [Thomas Rothmeier](https://appshunter.io/developer/883796816)
- Category: Lifestyle, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 18.0 · 6 MB
- Languages: American English, German (Germany)
- Released: 2026-11-06
- Data updated: 2026-11-07

## What is Aquarium Tracker?

Log aquarium water tests in seconds and see what's drifting before it becomes a problem.

Aquarium Tracker is a calm, fast log for reef, saltwater, freshwater, planted, shrimp and brackish tanks. Enter a test in seconds, see at a glance what is in range, and know what's due today.

WATER TESTS THAT MAKE SENSE
• A test sheet built for your tank: reef, SPS, fish-only, community, planted, Neocaridina, Caridina or brackish
• Over 30 parameters, from KH, calcium, magnesium, nitrate and phosphate to ICP trace elements, TDS, CO₂ and ORP
• Enter values in the unit your kit reads: phosphate as ppb P (Hanna checker), nitrate as NO₃-N, KH in dKH, meq/L or ppm, salinity as SG, ppt or mS/cm
• Immediate feedback against your own target ranges

TRENDS THAT TELL YOU SOMETHING
• Charts with your target band
• Stability: daily change and swing warnings, because stable beats perfect
• Consumption: how much KH, calcium and magnesium your tank uses per day, from tests, doses and water changes
• Calcium vs alkalinity balance and nitrate : phosphate ratio for reef tanks
• Free (toxic) ammonia from total ammonia, pH and temperature

CARE WITHOUT THINKING ABOUT IT
• Recurring tasks with reminders, on a fixed calendar or counted from when you last did them
• Test reminders per parameter, with quiet hours
• Water change log with an estimate of nitrate afterwards
• Calculators where you need them: water change size to bring nitrate or phosphate down, doses to raise KH, calcium, magnesium and more with your own products, split safely over days
• Livestock list with losses and rehomes archived, never deleted, and a "tank matches" check for ~100 common species
• Supplements on a schedule, dosing pumps included, with supply forecasts ("salt: about 2 water changes left")
• Equipment and consumables with replacement reminders and warranty dates
• Expenses by month and year: livestock, hardware, supplies
• Feeding plan with a printable PDF for your tank sitter
• Treatment courses for hospital tanks, with an observation period before animals move back
• Cycling mode for new tanks: follows ammonia and nitrite until the tank is ready
• Lab (ICP) results in one go: paste the lab's text and the values fill in
• Timeline of everything, in order
• Home Screen and Lock Screen widgets, with a tap to mark tasks done

YOUR DATA, YOUR DEVICE
• Works without internet
• No account, no ads, no tracking, no server
• Daily backups to your own iCloud Drive, optionally encrypted with your passphrase
• Export everything as CSV or JSON at any time

PRO (ONE-TIME PURCHASE)
• Unlimited tanks
• Custom parameters for anything your ICP lab reports
• Growth photo comparison: a before/after slider for corals and plants

The free version stays complete for one tank, including backups and export.

## Is Aquarium Tracker safe?

Not enough ratings yet to assess Aquarium Tracker.

## Is Aquarium Tracker legit?

Aquarium Tracker: Fish & Reef has limited verification signals. The AppsHunter Legitimacy Score for Aquarium Tracker is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-11-06

No release notes.

## More apps by Thomas Rothmeier

- [Greenlight: RV Checklist](https://appshunter.io/ios/app/greenlight-rv-checklist/id6822671426)
- [Tally: Life Counter](https://appshunter.io/ios/app/tally-life-counter/id6823217897)

All apps by Thomas Rothmeier: https://appshunter.io/developer/883796816

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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 2026-11-07.*