# AquaMaster: Aquarium Log Book — Water Change Reminders & Log > Water Change Reminders & Log (iPhone/iPad app by ChenHui Hung.) - Source: https://appshunter.io/ios/app/aquamaster-aquarium-log-book/id6763858449 (this page in markdown: same URL + `.md`) - Developer: [ChenHui Hung](https://appshunter.io/developer/1895528632) - Category: Utilities, Lifestyle - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 26.2 · 20 MB - Languages: American English, Japanese, Chinese (Traditional, Taiwan) - Released: 2026-06-13 - Data updated: 2026-08-29 - User reviews in markdown: https://appshunter.io/ios/app/aquamaster-aquarium-log-book/id6763858449/reviews.md ## What is AquaMaster? Keeping fish can be elegant and scientific! "AquaMaster: Aquarium Log Book" is the ultimate tank management app designed for aquarium enthusiasts. Whether you are a beginner with a simple goldfish bowl, or a seasoned hobbyist maintaining high-end aquascapes and marine reefs, this app helps you wave goodbye to messy paper logs and keep your aquatic ecosystems thriving. 【Free to Start】 No payment required to get started — the free plan lets you manage 1 tank. Upgrade to a subscription or the Lifetime plan anytime for unlimited tanks and advanced features. 【Core Features to Protect Your Aquarium】 ● Built for iPad - Browse your tank list and read tank details side by side in a native two-column layout. - A new iPad dashboard greets you with today's weather and a summary card for all your tanks. - The calendar and water parameter charts stretch out to fill the bigger screen, so you can see more history at once. ● Multi-Tank Management - Support for creating and tracking multiple aquariums (e.g., freshwater, reef, planted, shrimp tanks) simultaneously. - Keep separate water logs, maintenance schedules, and stats for each tank, ensuring your aquatic life stays perfectly organized. ● Scientific Water Quality Tracker - Log pH, NO2, NO3, water temperature, salinity, and other critical parameters with ease. - Visual charts help you track water trends and detect ecological issues before they become crises. - Features WeatherKit integration, correlating local weather changes with your tank's behavior. ● Smart Maintenance Reminders - Never forget water changes, feeding schedules, filter cleanings, or dosing additives again. - Customize your own routines and receive timely push notifications tailored to your lifestyle. ● Test Strip Camera Scanner & Quick Entry - Say goodbye to tedious typing! Simply snap a photo of your water test strip with the camera. The app uses Vision technology to analyze the color blocks and "pre-fill" your parameters. - Designed for real-world lighting! Includes an intuitive adjustment picker. If lighting causes minor detection variances, you can easily tweak the values on-screen before saving. ● Home Screen Widgets - Keep an eye on your aquarium at a glance — no need to open the app. - Small widget shows your next reminder and the tank it belongs to; Medium widget automatically switches between your latest water readings and today's & tomorrow's reminders. - Fully localized in English & Traditional Chinese, following your in-app language. ● Your Data Stays Yours - All your tank logs and water parameters are stored in your personal iCloud account, encrypted and synced via Apple CloudKit — never uploaded to our own servers. - Switch devices anytime; as long as you're signed in with the same Apple ID, your data picks up right where you left off. - Available on the free plan too — this isn't a paid-only feature. --- 【One-Time Purchase Option】 Prefer not to subscribe? We also offer a "Lifetime" plan. - Pay once to unlock unlimited tanks and advanced analytics for good. - No auto-renewal, no recurring charges — ever. 【About Auto-Renewable Subscriptions】 Unlock unlimited tanks and advanced analytics by subscribing to our "Hobbyist" or "Pro" plans. - Subscription cycle: Monthly auto-renewal. - Payment will be charged to your iTunes Account at confirmation of purchase. - You can turn off auto-renewal at any time by going to your iPhone's Account Settings after purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://pk3696666.github.io/aquarium-policy/privacy-en.html ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Hobbyist Monthly | $1.99 | per month | | Pro Monthly | $7.99 | per month | ## Version history (last 5 releases) ### 1.4 — 2026-08-28 This update brings log search, a one-time Lifetime purchase, and a redesigned share card! ● Log Search "When did I last replace the filter media — and which one did I use?" "How many times did I feed this month?" "When did I last dose supplements?" "What did I medicate with, and how long ago?" Type a few words or tap a log type, and every matching entry shows up — notes and all, with a running count. ● Lifetime Purchase Not a fan of subscriptions? Pay once and unlock every Pro feature for good. ● Redesigned Share Card The water quality share card has a whole new look that matches the app's glass-like style — and you get to pick which reading takes center stage. Thanks for keeping your tanks happy with us. We'd love to hear your feedback! ### 1.3 — 2026-08-19 AquaMaster now runs natively on iPad — redesigned for the bigger screen! ● Native iPad Layout Your tank list and tank details now sit side by side in a two-column view, so you never lose your place while switching between tanks. ● New iPad Dashboard When no tank is selected, see today's weather alongside a summary card for all your tanks in a single overview. ● More Room for Calendar & Trends The calendar grid and water parameter charts now use the full width of your iPad, showing more of your history at a glance. ● Camera Guide Fix Fixed an issue where rotating your iPhone during test strip scanning could misalign the camera guide. Thanks for keeping your tanks happy with us. We'd love to hear your feedback! ### 1.2.1 — 2026-07-31 Bug Fixes & Improvements - Fixed inconsistent water hardness (GH/KH) unit display across screens - Added a keyboard dismiss button and swipe gesture to calculator screens - Improved dashboard pinning and fixed related notification edge cases - Tapping the widget now opens the app and jumps straight to the right tank Thanks for keeping your tanks happy with us. We'd love to hear your feedback! ### 1.2 — 2026-07-14 Bug Fixes & Improvements - Fixed a few English translation issues - Added Japanese language support Thanks for keeping your tanks happy with us. We'd love to hear your feedback! ### 1.1 — 2026-07-06 New Home Screen Widgets Keep an eye on your aquarium at a glance — no need to open the app! • Small: your next reminder and the tank it belongs to • Medium: automatically switches between your latest water readings and today's & tomorrow's reminders • Fully localized in English & Traditional Chinese, following your in-app language Thanks for keeping your tanks happy with us. We'd love to hear your feedback ## Apps similar to AquaMaster | App | Rating | Price | Category | | --- | --- | --- | --- | | [TSpeed 7](https://appshunter.io/ios/app/tspeed-7/id1575505851) | — | Free | Utilities | | [養魚日記](https://appshunter.io/ios/app/id6746466026) | — | Free | Utilities | | [海缸小幫手](https://appshunter.io/ios/app/id1400877195) | — | Free | Utilities | | [Simalai](https://appshunter.io/ios/app/simalai/id994853061) | — | Free | Utilities | | [全能委託所](https://appshunter.io/ios/app/id1626049808) | — | Free | Utilities | | [Aquarium Master](https://appshunter.io/ios/app/aquarium-master/id6723864411) | — | Free | Utilities | --- *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 2026-08-29.*