# Reef Chronicles — Reef tank log & dosing rates > Aquarium logbook and dosing calculator for reef tank parameters. (iPhone/iPad app by TALASTACK LLC.) - Source: https://appshunter.io/ios/app/reef-chronicles/id6807096382 (this page in markdown: same URL + `.md`) - Developer: [TALASTACK LLC](https://appshunter.io/developer/6807096384) - Category: Lifestyle, Utilities - Price: Free - Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 10 MB - Languages: American English - Released: 2026-10-01 - Data updated: 2026-10-08 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/reef-chronicles/id6807096382/reviews.md ## What is Reef Chronicles? You test, you write it down, and six months later you still cannot say how much your tank uses in a day. That is the number this works out. It compares what you have dosed against how much the number actually moved, and gives you the daily amount that would hold alkalinity steady. Same for calcium, magnesium and the rest. Everything else is a logbook that stays out of the way. LOGGING 22 parameters. Backdate a test you forgot to enter. "Same as last time" for the ones that never move. A full round takes under a minute, one-handed. DOSING Enter where you are and where you want to be. You get grams or millilitres for your volume and your product, with the arithmetic shown. No conversions on the back of an envelope. It will not give you the whole correction in one go. Alkalinity moving more than 1.4 dKH in a day is how people burn tips off Acropora, so the number is capped whether you like it or not. CHARTS Your whole history, always. No thirty-day window. THE REST Tasks and reminders. Consumables, so you change carbon before it is spent. Livestock, photos, notes. Cycle mode with ammonia and nitrite. CSV in and out, so bring your spreadsheet and take your data with you when you go. THE ANALYSIS The consumption engine wants a few weeks of tests before it says anything, and it will not guess. It discards readings either side of a water change and tells you how much it trusts the answer. It also warns you before a parameter drifts out of range, ramps a dose change across days instead of overnight, puts several parameters on one chart, and answers "what changed?" when something has gone wrong. ALL OF IT IS FREE Unlimited tanks, all your history, every calculator and every piece of the analysis. No tiers, no trial, nothing to buy, nothing that expires. NO ACCOUNT NEEDED It works offline out of the box, and nothing leaves your phone unless you sign in. No ads, no analytics, no tracking, and nothing sold to anyone. ## Key features - Parameter logging (22 parameters) - Automated dosing calculations - Daily consumption analysis - Full history charting - Task and reminder management - Consumables tracking - CSV import/export ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/reef-chronicles/id6807096382/reviews.md ### 5/5 — 5 stars *2026-10-03* Incredible design and has an amazing use case! ### 5/5 — Fully free *2026-10-03* Seems like every other reef app has ads or requires payment and subscription. This has what those have but feee ## Frequently asked questions about Reef Chronicles ### What is Reef Chronicles? Reef Chronicles is a free application designed for reef tank enthusiasts to log water parameters, calculate precise dosing rates for essential elements like alkalinity, calcium, and magnesium, and track the overall health of their aquarium. ### How does Reef Chronicles calculate dosing rates? The app analyzes your logged test results against your dosing history to determine the daily consumption of parameters. It then calculates the precise amount of product needed to maintain stable levels, showing you the arithmetic involved. ### Can I see my entire aquarium history with Reef Chronicles? Yes, Reef Chronicles provides access to your complete testing history without any time limitations. You can view all your logged data and charts from the beginning. ### Does Reef Chronicles have ads? No, Reef Chronicles is completely ad-free. It operates offline out of the box, and no data leaves your phone unless you choose to sign in. ### Is Reef Chronicles free to use? Yes, Reef Chronicles is entirely free. There are no tiers, trials, in-app purchases, or subscriptions required to access all features, including unlimited tanks, full history, calculators, and analysis tools. ### What kind of parameters can I log in Reef Chronicles? You can log 22 different parameters within Reef Chronicles. The app also allows you to backdate entries for tests you may have forgotten to enter. ### Does Reef Chronicles support data export? Yes, Reef Chronicles supports CSV import and export. This allows you to bring your existing spreadsheet data into the app or take your data with you when you go. ### How often is Reef Chronicles updated? The application was last updated on October 1, 2026, with version 1.0.0. As a new release, users can anticipate future updates based on user feedback and development plans. ## Version history (last 1 release) ### 1.0.0 — 2026-10-01 No release notes. --- *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 2026-10-08.*