# Reef Meister: Measure & Manage — SmartRef > Manage and visualize data from the SmartRef digital refractometer. (iPhone/iPad app by Anton Paar ConsumerTec GmbH.) - Source: https://appshunter.io/ios/app/reef-meister-measure-and-manage/id1626848613 (this page in markdown: same URL + `.md`) - Developer: [Anton Paar ConsumerTec GmbH](https://appshunter.io/developer/1564917005) - Category: Reference - Price: Free with in-app purchases - Rating: 5.00/5 from 2 App Store ratings - Age rating: 4+ - Requires: iOS 18.0 · 69 MB - Languages: American English, Czech, French (France), German (Germany), Hungarian, Italian, Japanese, Polish, European Portuguese, Chinese (Simplified, China) and 2 more - Released: 2022-09-08 - Data updated: 2026-08-25 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/reef-meister-measure-and-manage/id1626848613/reviews.md ## What is Reef Meister? Keep your reef rock-steady with Reef Meister. Measure salinity in seconds and hold your tank in the sweet spot your corals, fish, and invertebrates depend on. Connect your SmartRef refractometer over Bluetooth and read salinity accurately from a tiny sample — or add readings by hand. No device yet? You can still log, organize, and export measurements, then connect one whenever you're ready. RESULTS WITH CONTEXT Pick how you like to read it and Reef Meister tells you what your number means: - Salinity in PSU, parts per thousand (ppt), or specific gravity (SG) - See whether your tank sits in the reef-safe range — around 35 ppt (1.025 SG) - Catch drift early and correct it before your livestock feels the change ACCURATE & REPEATABLE - Refractometer precision from a tiny sample — far steadier than swing-arm hydrometers - Automatic temperature compensation — values are already corrected, no tables needed - Calibrate with distilled water right in the app for confidence in every reading A HISTORY YOU OWN - Track salinity over time, tank by tank, with notes and timestamps - Add per-reading notes for water changes, top-offs, and dosing - Find anything instantly with full-text search - Export to PDF for clean reports or CSV for spreadsheets - Long-press any result to copy or share it ONE ACCOUNT, EVERY DEVICE A free Meister Cloud account syncs your logs across iPhone, iPad, Apple Watch, Apple Silicon Mac, Apple Vision Pro, and the web — one account for the whole Meister app family. Without an account, your data stays local on your device. For refractive index and salinity you need a SmartRef refractometer by Anton Paar. Learn more: https://www.get-tony.com SUPPORT Contact us at support@get-tony.com PRIVACY POLICY https://www.get-tony.com/policies/privacy-policy TERMS https://www.get-tony.com/policies/legal-notice --- Auto-Renewable Subscription Terms: Subscriptions are billed monthly or annually at the rate selected depending on the subscription plan. The price corresponds to the same price segment, which is set in the "Apple's App Store Matrix" for other currencies. * Your free trial subscription will automatically renew to a paid subscription unless auto-renew is turned off at least 24 hours before the end of the free trial period. * Please note: any unused portion of a free trial period (if offered) will be forfeited when you purchase a premium subscription during the free trial period. * You can cancel a free trial or subscription anytime by turning off auto-renewal through your iTunes account settings. This must be done 24 hours before the end of a free trial or subscription period to avoid being charged. The cancellation will take effect the day after the last day of the current subscription period, and you will be downgraded to the free service. * Account will be charged for renewal within 24-hours before the end of the current period, and identify the cost of the renewal. ## Key features - Collects data from SmartRef refractometer - Manages and visualizes readings - Exports data in multiple formats - Temperature-corrected concentration values - Adjusts SmartRef device - Supports PSU, ppt, and SG 20/20 units ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Full Access | $39.99 | per year | | Full Access Monthly | $4.99 | per month | ## Frequently asked questions about Reef Meister ### What is Reef Meister? Reef Meister is a mobile application designed to collect, manage, visualize, and export data from the Anton Paar SmartRef digital refractometer. It provides temperature-corrected readings in various units for salinity and concentration. ### What units does Reef Meister support? Reef Meister supports Practical Salinity Units (PSU), Salinity in Parts per Thousand (ppt), and Salinity S.G. (SG 20/20). The app also displays temperature-corrected concentration values. ### How do I adjust the SmartRef device with Reef Meister? The SmartRef device is adjusted using the Reef Meister app and distilled water. This ensures accurate readings for your measurements. ### What devices is Reef Meister compatible with? Reef Meister is compatible with iPhones and Apple Watches, as indicated by its supported devices list. It was released on September 8, 2022, and last updated on June 8, 2026. ### What is the age rating for Reef Meister? Reef Meister has an age rating of 4+, making it suitable for a wide range of users. The app is available for free. ### Does Reef Meister have ads? No, Reef Meister does not contain advertisements. The application is free to download and use, with optional in-app purchases for enhanced features. ### What are the subscription options for Reef Meister? Reef Meister offers auto-renewable subscriptions billed monthly or annually. Options include 'Full Access Monthly' for $4.99/P1M with a 7-day free trial, and 'Full Access' for $39.99/P1Y with a 7-day free trial. ### How can I cancel my Reef Meister subscription? You can cancel your free trial or subscription at any time by turning off auto-renewal through your iTunes account settings. This must be done at least 24 hours before the end of the current period to avoid being charged. ## Version history (last 5 releases) ### 6.6.4 — 2026-08-11 - Added new precise measurement mode - Improved device settings and diagnostics - Improved Measure Insights and reports To improve our app for you, we regularly bring updates to the App Store. If you enjoy it, would you mind taking a moment to write a review on the App Store? We’d greatly appreciate it. ### 6.6.2 — 2026-07-02 - Added new precise measurement mode - Improved device settings and diagnostics - Improved Measure Insights and reports To improve our app for you, we regularly bring updates to the App Store. If you enjoy it, would you mind taking a moment to write a review on the App Store? We’d greatly appreciate it. ### 6.6.1 — 2026-06-30 - Added new precise measurement mode - Improved device settings and diagnostics - Improved Measure Insights and reports To improve our app for you, we regularly bring updates to the App Store. If you enjoy it, would you mind taking a moment to write a review on the App Store? We’d greatly appreciate it. ### 6.6.0 — 2026-06-16 - Added new precise measurement mode - Improved device settings and diagnostics - Improved Measure Insights and reports To improve our app for you, we regularly bring updates to the App Store. If you enjoy it, would you mind taking a moment to write a review on the App Store? We’d greatly appreciate it. ### 6.5.1 — 2026-06-08 - Fish tanks improvements: Export data (PDF & CSV) and enjoy faster, more flexible tanks filtering and data management To improve our app for you, we regularly bring updates to the App Store. If you enjoy it, would you mind taking a moment to write a review on the App Store? We’d greatly appreciate it. ## Apps similar to Reef Meister | App | Rating | Price | Category | | --- | --- | --- | --- | | [Reef App - Encyclopedia](https://appshunter.io/ios/app/reef-app-encyclopedia/id1077941725) | 3.4 (5) | $1.99 | Reference | ## More apps by Anton Paar ConsumerTec GmbH - [Brew Meister: Measure & Manage](https://appshunter.io/ios/app/brew-meister-measure-and-manage/id1521627812) - [Lab Meister: Measure & Manage](https://appshunter.io/ios/app/lab-meister-measure-and-manage/id1576665047) - [Wine Meister: Measure & Manage](https://appshunter.io/ios/app/wine-meister-measure-and-manage/id1585621353) - [Proof Meister: Measure ABV](https://appshunter.io/ios/app/proof-meister-measure-abv/id1585835714) - [Pet Care Meister - Cat Dog Log](https://appshunter.io/ios/app/pet-care-meister-cat-dog-log/id6741420688) All apps by Anton Paar ConsumerTec GmbH: https://appshunter.io/developer/1564917005 ## Related topics [anton paar](https://appshunter.io/ios/topics/anton-paar) --- *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 2026-08-25.*