# ReefLog: Reef Tank Tracker

> Ca · Alk · Mg · Water Changes

Canonical page: [https://chrome-stats.com/d/id6761686043](https://chrome-stats.com/d/id6761686043)

## Overview

- **ID:** `id6761686043`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** 磊磊 张
- **Category:** Sports
- **Version:** 1.0.0
- **Last updated:** 2026-04-06
- **First published:** 2026-04-06
- **Size:** 1.36 MB
- **Data as of:** 2026-09-05
- **Store listing:** [Apple App Store](https://apps.apple.com/be/app/reeflog-reef-tank-tracker/id6761686043)
- **Website:** [https://openrowan.com/apps/reefLog/](https://openrowan.com/apps/reefLog/)
- **Privacy policy:** [https://openrowan.com/apps/reefLog/privacy/](https://openrowan.com/apps/reefLog/privacy/)

## Description

The reef tank journal your corals deserve. Track Ca, Alk, Mg + all 8 parameters. One tap to log. Offline forever. No subscription.

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.

## Rankings

- #1,508,311 — Overall

## Similar extensions and apps

- [ReefLogger](https://chrome-stats.com/d/id6787198932)
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- [Tanksmith](https://chrome-stats.com/d/id6769517856) — 5.00 / 5
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Source: [Chrome-Stats](https://chrome-stats.com/d/id6761686043)