# ReefVault: Reef Tank Log — Water Test Log & Dosing

> Water Test Log & Dosing (iPhone/iPad app by Vikram Joshi.)

- Source: https://appshunter.io/ios/app/reefvault-reef-tank-log/id6787424398 (this page in markdown: same URL + `.md`)
- Developer: [Vikram Joshi](https://appshunter.io/developer/1875452225)
- Category: Lifestyle, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: American English
- Released: 2026-07-10
- Data updated: 2026-07-23
- User reviews in markdown: https://appshunter.io/ios/app/reefvault-reef-tank-log/id6787424398/reviews.md

## What is ReefVault?

ReefVault is the reef log that does the chemistry. Log every water test, dose with confidence, and never lose your tank's history again.

DOSING MATH YOU CAN TRUST
- A target dosing calculator for alkalinity, calcium, and magnesium, built on real stoichiometry and cross-checked against published reef-chemistry references
- A safety rail warns you before a correction exceeds a safe daily change, and explains the pH effect of different products
- Every result reminds you to verify against your own product's label. ReefVault does arithmetic on your numbers; it never prescribes

SEE WHAT ACTUALLY MOVED YOUR NUMBERS
- Trend charts with target-range bands, so you can see at a glance whether you're in range
- Dosing and water-change events plotted right on the chart, so cause and effect are obvious
- Log multiple tests a day, tag each one with the test kit you used, and filter by source

NEVER LOSE YOUR REEF'S HISTORY
- Your data lives on your device and in your own private iCloud. We have no server and cannot see or hold your data hostage
- One-tap CSV export of everything, free forever, whether or not you use ReefVault Pro
- Import from a CSV export from another app to bring your history with you

A REAL RECORD FOR A REAL TANK
- 15+ built-in parameters plus custom ones, each with its own target range
- Livestock, coral, and equipment inventory with photo timelines
- Recurring task schedules for water changes, dosing, filter socks, media changes, and RODI cycles that don't drift when you complete them late
- Manual ICP test entry, always free, plus templated CSV import for ATI and Triton results
- Expense tracking, test-kit timers for running multiple titrations at once, and Home and Lock Screen widgets showing your latest readings and next task

MULTI-TANK, ONE PRODUCT LIBRARY
- Track unlimited tanks (display, frag, quarantine, whatever you run) with a shared product library instead of re-entering the same dosing products for every tank

Logging is free forever: unlimited tests for one tank, all parameters, multiple entries per day, reminders, manual ICP entry, expense tracking, and full CSV export/import. ReefVault Pro unlocks unlimited tanks with a shared product library, the dosing calculator, target-band and event-overlay analytics, widgets, larger photo timelines, test-kit-source filtering, and ICP CSV import templates.

ReefVault is a hobby record-keeper and arithmetic tool. It does not diagnose or treat livestock health and is not a substitute for your own judgment, testing, and research.

ReefVault Pro is an auto-renewable subscription (monthly or annual with a 7-day free trial), or a one-time lifetime purchase. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel anytime in your App Store account settings. Any unused portion of a free trial is forfeited when you purchase a subscription.
Privacy Policy: https://reefvault.vercel.app/privacy.html
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 |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Annual | $29.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| ReefVault Pro Lifetime | $59.99 | one-time |



## Version history (last 3 releases)

### 1.0.2 — 2026-07-19

This update improves the reliability of purchases and Restore Purchases, and includes general bug fixes.

### 1.0.1 — 2026-07-14

Reliability and accuracy improvements in this release:
- Numbers and prices import and display correctly in every region
- The dosing calculator guards against invalid inputs
- Photos are removed properly when you delete a tank, item, or livestock
- The app recovers more gracefully from data issues
- Various stability fixes

### 1.0 — 2026-07-10

No release notes.

## More apps by Vikram Joshi

- [Vox Vin](https://appshunter.io/ios/app/vox-vin/id6758871938)
- [Sommelier's Window](https://appshunter.io/ios/app/sommeliers-window/id6759473813)
- [Soravi](https://appshunter.io/ios/app/soravi/id6770170819)
- [Crisp Scan](https://appshunter.io/ios/app/crisp-scan/id6771958752)
- [DoseVault: Injection Tracker](https://appshunter.io/ios/app/dosevault-injection-tracker/id6779019633)
- [TanWise: Tan Timer & UV Index](https://appshunter.io/ios/app/tanwise-tan-timer-and-uv-index/id6779376742)

All apps by Vikram Joshi: https://appshunter.io/developer/1875452225

---

*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 2026-07-23.*