# Reef Ledger

> Reef Ledger (iPhone/iPad app by Felix Barker.)

- Source: https://appshunter.io/ios/app/reef-ledger/id6772725387 (this page in markdown: same URL + `.md`)
- Developer: [Felix Barker](https://appshunter.io/developer/1516182138)
- Category: Utilities
- Price: $2.99 with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 2 MB
- Languages: American English
- Released: 2026-05-27
- Data updated: 2026-08-15
- User reviews in markdown: https://appshunter.io/ios/app/reef-ledger/id6772725387/reviews.md

## What is Reef Ledger?

Your reef, by the numbers. Reef Ledger is the saltwater keeper's logbook.

KNOW YOUR WATER
Log alkalinity, calcium, magnesium, nitrate and more per tank - with trends that show drift before your corals feel it.

DOSE EXACTLY RIGHT
The dosing calculator turns tank volume and target into exact amounts.

NEVER MISS MAINTENANCE
Water changes, filter swaps, and feedings on schedule, with time-sensitive reminders.

UNLIMITED TANKS + CSV EXPORT
Every tank in one place; export your full history anytime.

PRIVATE BY DESIGN
Everything stays on this iPhone. No account, no cloud, no tracking.

One-time purchase. No subscription. Every feature included.

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

## Pricing and in-app purchases

Base price: $2.99.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Reef Ledger Pro | $2.99 | per month |



## Version history (last 3 releases)

### 1.2 — 2026-06-22

Reef Ledger is now a one-time purchase - every feature unlocked, no subscription.
- Unlimited tanks, reminders, and CSV export for everyone
- Quick-start guide and accessibility improvements

### 1.1 — 2026-06-02

A brighter, friendlier new design and reliability improvements. Thanks for playing — we hope you enjoy it!

### 1.0 — 2026-05-27

No release notes.

## More apps by Felix Barker

- [Copita AR Menu](https://appshunter.io/ios/app/copita-ar-menu/id6446335917)
- [EZ Restaurant Inventory](https://appshunter.io/ios/app/ez-restaurant-inventory/id6450390004)
- [Inventory E-Z](https://appshunter.io/ios/app/inventory-e-z/id6463491894)
- [Emma's Chinese Restaurant AR](https://appshunter.io/ios/app/emmas-chinese-restaurant-ar/id6466905074)
- [iNVEEY](https://appshunter.io/ios/app/inveey/id6748873392)
- [Kiln Shrink Sizer](https://appshunter.io/ios/app/kiln-shrink-sizer/id6772621824)

All apps by Felix Barker: https://appshunter.io/developer/1516182138

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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 2026-08-15.*