# Reeflog: Water Test & Dosing — Aquarium stability tracker

> Aquarium stability tracker (iPhone/iPad app by 慧慧 高.)

- Source: https://appshunter.io/ios/app/reeflog-water-test-and-dosing/id6787313501 (this page in markdown: same URL + `.md`)
- Developer: [慧慧 高](https://appshunter.io/developer/1887721875)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.2 · 3 MB
- Languages: American English
- Released: 2026-07-08
- Data updated: 2026-08-02
- User reviews in markdown: https://appshunter.io/ios/app/reeflog-water-test-and-dosing/id6787313501/reviews.md

## What is Reeflog?

"Your test kit tells you where the tank is. Reeflog tells you what to dose, whether it worked, and how stable you really are - in one loop, on your phone."

Reeflog is a water-testing and dosing tracker for reef and saltwater aquariums.

I built Reeflog because reefkeeping is a weekly test-dose-retest cycle, and the apps I tried just stored the numbers - then sent me to a web calculator and a spreadsheet to actually decide anything. Reeflog closes that loop.

THE LOOP
- Log a test in two taps with big, wet-hands steppers tuned to real kit resolution (Hanna, Salifert, Red Sea, API).
- If a parameter drifts out of band, a dose card shows the exact amount of YOUR additive for YOUR net water volume - with a safe daily-change cap, so a large correction becomes a gentle multi-day plan instead of one risky dose.
- Tap once to log the dose. Your next test verifies it: predicted vs measured, on target or not.

THE NUMBERS REEFERS ACTUALLY WATCH
- Consumption: daily alkalinity, calcium, and magnesium demand, worked out automatically from your test and dosing history - the growth and dosing-drift signal you used to need a spreadsheet for.
- Stability Index: each parameter's last 30 days against its target band, condensed into one 0-100 score. The dashboard leads with stability, not last readings. Tap any score to see exactly how it is computed.

ALSO IN THE BOX
- Water changes with a prediction of where each parameter will land.
- Calm maintenance reminders - overdue is shown gently, never a wall of red.
- A livestock journal for fish, coral, and inverts, including the losses reefers track seriously, with photos.

FREE, FOR AS LONG AS YOU LIKE
One tank with the whole loop: all 12 built-in parameters logged and charted, the single-dose card on 5 built-in products, water changes, and the Stability Index dashboard - plus 5 maintenance tasks and 20 livestock entries. Free is a complete tank, not a demo.

REEFLOG PRO
- Unlimited tanks - display, frag, and quarantine, each with its own volume, dose loop, and stability.
- Full chart history - pinch any parameter from one week to a full year (free shows 60 days).
- Full additive database plus custom products, with safe multi-day correction plans for large changes.
- Consumption analytics - daily alkalinity, calcium, and magnesium demand trended automatically.
- Test Day mode - log your whole weekly panel in one screen with prior values ghosted.
- Custom parameters - track anything with its own unit, range, and stepper.
- Unlimited maintenance tasks, livestock, and equipment reminders.
- Tank report PDF - export one tank's readings, doses, consumption, and stability to share.
- ICP records with reference bands, plus an A/B coral compare slider.

PRICING
Pay once and own it with Lifetime ($24.99), or subscribe: $9.99/year with a 30-day free trial, or $1.99/month. All three unlock the same Pro set. Subscriptions auto-renew unless turned off at least 24 hours before the period ends; manage or cancel anytime in your App Store account settings. Any unused free-trial time is forfeited when you buy a subscription.

PRIVACY
Your records live on this iPhone, in your hands. There is no account to make and no sign-in, and nothing is uploaded to a server - the app works fully offline. When you want a copy somewhere else, export a tank as a PDF to share.

Reeflog is an independent app and is not affiliated with any additive, salt, or equipment maker; product potencies are shown as editable references transcribed from public labels. Dosing suggestions are aquarium chemistry for your tank, not veterinary advice - always check your product's label, and correct large changes gradually.

Designed exclusively for iPhone.

Privacy Policy: https://app-legal-pages.vercel.app/reeflog/privacy
Terms of Service: https://app-legal-pages.vercel.app/reeflog/terms

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Annual | $9.99 | per year |
| Monthly | $1.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime | $29.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-07-09

No release notes.

## More apps by 慧慧 高

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- [Typelet](https://appshunter.io/ios/app/typelet/id6761749464)
- [SubLens: Subscription Tracker](https://appshunter.io/ios/app/sublens-subscription-tracker/id6761884305)
- [Pixpipe](https://appshunter.io/ios/app/pixpipe/id6761884516)
- [InvoicePad - Invoice Maker](https://appshunter.io/ios/app/invoicepad-invoice-maker/id6762102425)

All apps by 慧慧 高: https://appshunter.io/developer/1887721875

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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 2026-08-02.*