# ReefLog: Reef Tank Tracker — Ca · Alk · Mg · Water Changes

> Ca · Alk · Mg · Water Changes (iPhone/iPad app by 磊磊 张.)

- Source: https://appshunter.io/ios/app/reeflog-reef-tank-tracker/id6761686043 (this page in markdown: same URL + `.md`)
- Developer: [磊磊 张](https://appshunter.io/developer/1887198832)
- Category: Sports, Utilities
- Price: $4.99
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: French (France), German (Germany), Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2026-04-06
- Data updated: 2026-08-31
- User reviews in markdown: https://appshunter.io/ios/app/reeflog-reef-tank-tracker/id6761686043/reviews.md

## What is ReefLog?

Track your reef tank's critical parameters and never lose a coral to preventable parameter swings.

ReefLog is built specifically for reef and saltwater aquariums — not generic fish tanks. Log calcium, alkalinity, magnesium, phosphate, nitrate, salinity, pH, and temperature in seconds. Your entire tank history in one place, always offline.

WHAT MAKES REEFLOG DIFFERENT
• Designed for reef chemistry — the Ca/Alk/Mg triad is front and center
• Instant health indicator — green/yellow/red based on your actual values vs. safe ranges
• Multiple tanks — manage a display tank, frag tank, and sump separately
• Water change log — never forget when you last changed water
• Coral inventory — track what you have, what it cost, and how it's doing
• 100% offline — no account, no subscription, no cloud required

WHO IT'S FOR
Hobbyist or advanced reefer running a mixed reef, SPS, LPS, or FOWLR tank. If you've ever killed a coral because you forgot to test alkalinity, this app is for you.

PRIVACY
ReefLog stores all data locally on your device. Nothing is sent to any server.


## Version history (last 1 release)

### 1.0.0 — 2026-04-06

No release notes.

## More apps by 磊磊 张

- [Twinkle Story](https://appshunter.io/ios/app/twinkle-story/id6761061989)
- [ProofTime: Sourdough Timer](https://appshunter.io/ios/app/prooftime-sourdough-timer/id6761090248)
- [TileCalc - Tile Calculator](https://appshunter.io/ios/app/tilecalc-tile-calculator/id6761092447)
- [HiveLog Bee and Apiary Tracker](https://appshunter.io/ios/app/hivelog-bee-and-apiary-tracker/id6761542862)
- [KnitCount - Knitting Counter](https://appshunter.io/ios/app/knitcount-knitting-counter/id6761709235)

All apps by 磊磊 张: https://appshunter.io/developer/1887198832

## Related topics

[iclicker reef](https://appshunter.io/ios/topics/iclicker-reef) · [reef market](https://appshunter.io/ios/topics/reef-market)

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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 2026-08-31.*