# Reef Aquarium Log - Coralog — Saltwater Parameters & Dosing

> Saltwater Parameters & Dosing (iPhone/iPad app by Ryosuke Igarashi.)

- Source: https://appshunter.io/ios/app/reef-aquarium-log-coralog/id6786378477 (this page in markdown: same URL + `.md`)
- Developer: [Ryosuke Igarashi](https://appshunter.io/developer/6781130241)
- Category: Lifestyle, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 5 MB
- Languages: American English, Dutch, French (France), German (Germany), Italian, Japanese, Korean, Polish, Brazilian Portuguese, Chinese (Simplified, China) and 3 more
- Released: 2026-07-08
- Data updated: 2026-10-24

## What is Reef Aquarium Log?

Keeping a reef is a balancing act. Alkalinity, calcium, magnesium, nitrate, phosphate — your corals live or die by how steady you hold them. Coralog is a calm, private place to track it all and catch a swing before it costs you a colony.

WHAT YOU CAN DO
• Log every test in seconds — values show green, amber, or red against your target range, the moment you enter them
• Keep your dosing on schedule with countdowns and a tap to mark each dose done
• Track your livestock — corals, fish, inverts — with photos, sources, and how long they've been in your reef
• See every parameter's trend over time, with your target band drawn right on the chart

FREE — NO ACCOUNT NEEDED
Log unlimited parameters and doses, track your full livestock list, and see your trends across weeks and months. Export your own data as a CSV. Nothing core is locked behind a paywall.

PREMIUM — MONTHLY OR YEARLY AUTO-RENEWING SUBSCRIPTION, OR A ONE-TIME LIFETIME PURCHASE. CHECK THE PRICE AND FREE-TRIAL ELIGIBILITY IN THE APP BEFORE YOU BUY.
• Drift watch: see which parameters are trending out of range — and roughly how many days you have before they do
• Dosing calculator: the calculated ml to raise alkalinity, calcium, or magnesium to your target for your tank volume
• Cancel anytime from your Apple ID settings

PRIVATE BY DESIGN
Everything you record stays only on your device. Coralog never uploads, syncs, shares, or sells your data. No account needed.

Coralog is a husbandry log. It does not provide water-chemistry or veterinary advice and is not a substitute for your own testing and judgment. Dosing figures are estimates — always verify against your additive's label and dose gradually.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Banneton Premium Monthly | $6.99 | per month |
| Banneton Premium Annual | $39.99 | per year |


## Is Reef Aquarium Log safe?

Not enough ratings yet to assess Reef Aquarium Log.

## Is Reef Aquarium Log legit?

Reef Aquarium Log - Coralog appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Reef Aquarium Log is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.0.13 — 2026-10-23

Clearer one-time option: Premium Lifetime now says exactly what you get — the same features as Premium, with no renewal. Plus small fixes.

### 1.0.12 — 2026-10-22

Clearer trial details: see the exact date your free trial ends and when billing starts, before you subscribe. Plus small fixes.

### 1.0.11 — 2026-10-19

Clearer upgrade screen: see exactly what stays free, what Premium adds, and when and how renewal works. Plus small fixes.

### 1.0.10 — 2026-10-18

New: turn your entries into a clean report you can save or share — preview it first. Plus reliability fixes.

### 1.0.9 — 2026-10-14

New: a one-time Lifetime purchase unlocks all paid features for good. Subscriptions now cost less. Plus small improvements.

## Apps similar to Reef Aquarium Log

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [ReefLogger](https://appshunter.io/ios/app/reeflogger/id6787198932) | — | Free | Lifestyle |
| [FishDiary - Aquarium Log](https://appshunter.io/ios/app/fishdiary-aquarium-log/id6795343931) | — | Free | Lifestyle |
| [Reef Tank Log: Water Tracker](https://appshunter.io/ios/app/reef-tank-log-water-tracker/id6790111056) | — | Free | Lifestyle |
| [Reeflo: Reef Aquarium Tracker](https://appshunter.io/ios/app/reeflo-reef-aquarium-tracker/id6777350925) | — | Free | Lifestyle |
| [피쉬하이](https://appshunter.io/ios/app/id6770563649) | 5.0 (1) | Free | Lifestyle |
| [Reef Trak - Reef Manager](https://appshunter.io/ios/app/reef-trak-reef-manager/id6741099733) | 4.8 (44) | Free | Lifestyle |

## More apps by Ryosuke Igarashi

- [Reading Journal - ReadLog](https://appshunter.io/ios/app/reading-journal-readlog/id6781130239)
- [IBS & Gut Tracker - Settura](https://appshunter.io/ios/app/ibs-and-gut-tracker-settura/id6781145402)
- [Gas Mileage Tracker - MotorLog](https://appshunter.io/ios/app/gas-mileage-tracker-motorlog/id6781159313)
- [Acid Reflux Diary - RefluxLog](https://appshunter.io/ios/app/acid-reflux-diary-refluxlog/id6781159330)
- [Skinote: Eczema Tracker & Log](https://appshunter.io/ios/app/skinote-eczema-tracker-and-log/id6782466803)
- [Pet Health Tracker - PawLog](https://appshunter.io/ios/app/pet-health-tracker-pawlog/id6782466968)

All apps by Ryosuke Igarashi: https://appshunter.io/developer/6781130241

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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 2026-10-24.*