# Reefstoich: Reef Chemistry

> Reefstoich: Reef Chemistry (iPhone/iPad app by Robert Corbin.)

- Source: https://appshunter.io/ios/app/reefstoich-reef-chemistry/id6792647245 (this page in markdown: same URL + `.md`)
- Developer: [Robert Corbin](https://appshunter.io/developer/1890247992)
- Category: Utilities
- Price: $3.99
- Age rating: 4+
- Requires: iOS 17.0 · 78 MB
- Released: 2026-07-30
- Data updated: 2026-08-10
- User reviews in markdown: https://appshunter.io/ios/app/reefstoich-reef-chemistry/id6792647245/reviews.md

## What is Reefstoich?

Reefstoich: Reef Chemistry is a local reef-chemistry bench for alkalinity, calcium, magnesium, salinity, and dosing-plan calculations with transparent units.

KEY FEATURES
- User-defined product-effect dosing math
- Alkalinity target and staged-correction plan
- Actual water-volume control
- Daily consumption and maintenance estimate
- Test-history records beside every plan
- Editable observations plus CSV import
- Conservative scenario comparison
- Local PDF analysis packet
- Forty original offline reef-chemistry plates

ONE-TIME AND PRIVATE
- One paid download; no subscription or in-app purchase
- No account, advertising, analytics, tracking, or developer-operated backend
- Core tools and bundled reference material work offline
- Work remains on device unless you deliberately import, share, or export through an Apple system interface

Test water with reliable methods and make gradual changes. Calculations do not replace product instructions, livestock observation, or experienced aquarium guidance.


## Version history (last 1 release)

### 1.0 — 2026-07-30

No release notes.

## More apps by Robert Corbin

- [Daily Word Journey](https://appshunter.io/ios/app/daily-word-journey/id6761548266)
- [Hush Secret Text](https://appshunter.io/ios/app/hush-secret-text/id6761658175)
- [Renew Guard](https://appshunter.io/ios/app/renew-guard/id6761755447)
- [Receipt to PDF](https://appshunter.io/ios/app/receipt-to-pdf/id6761782025)
- [Route Your Pay](https://appshunter.io/ios/app/route-your-pay/id6761783719)
- [Tip Arbiter](https://appshunter.io/ios/app/tip-arbiter/id6761786879)

All apps by Robert Corbin: https://appshunter.io/developer/1890247992

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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 2026-08-10.*