AquaLog: Aquarium Water Log
Paulo Cristo Lifestyle iPhoneiPadiPod touch
AquaLog: Aquarium Water Log is a free Lifestyle app for iPhone and iPad by Paulo Cristo. Requires iOS 16.4. Updated October 15, 2026.
- Price
- Free
- on the App Store
- Size
- 59 MB
- Age 4+
- Updated
- Oct 15
- 2026 · v1.0
Screenshots
About AquaLog: Aquarium Water Log
AquaLog is a simple water-quality log for people who keep aquariums — freshwater, planted or reef. Test your water, write the numbers down, and let AquaLog remind you what needs doing. No spreadsheet, no guesswork, no account to create. LOG A TEST IN SECONDS • pH, ammonia, nitrite, nitrate, temperature, GH and KH in one short form • Backdate a test you took earlier, or copy your last one and change only what moved • Edit any reading later — mistakes happen NEVER MISS MAINTENANCE • Reminders for water changes, filter cleaning, feeding and anything else you do • Repeating daily, weekly or monthly, with a notification when it is due • Everything that needs attention, in one place on the home screen FOLLOW EACH TANK OVER TIME • A dated photo album for every aquarium • A full timeline of every test, with swipe to delete and CSV export • A fish list with a stocking check that warns you before a tank gets crowded AQUALOG PRO • Parameter trends and charts, so you spot a problem forming before your fish do • Cycle tracker for new tanks — watch ammonia and nitrite fall as nitrate rises • Symptom checker: pick what you are seeing and get the likely causes and what to do next • Unlimited aquariums, reminders and photos • iCloud sync, so your iPhone and iPad stay in step FREE TO START One aquarium, up to three reminders, five photos per tank — and unlimited water tests, always. Testing your water is the habit that matters, so we never limit it. PRIVATE BY DESIGN No account and no sign-up. Your log stays on your device and everything works offline. iCloud sync is optional and uses your own private iCloud account. Available in English, French, Italian, Spanish and Portuguese. Stop guessing. Start keeping.
App privacy
The developer, Paulo Cristo, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to AquaLog: Aquarium Water Log
Looking for apps like AquaLog: Aquarium Water Log? Here are 6 similar apps on the App Store. The highest rated is Fishroom – aquarium journal (5.0/5), and all 6 are free to download.
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Tankbook: Aquarium Log
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FishDiary - Aquarium Log
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AquaLog: Aquarium Tank Tracker
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Fishroom – aquarium journal
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Aquarium Tank Tracker: AquaLog
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ReefFlow: Reef & Aquarium
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| AquaLog: Aquarium Water Log | – | Free | October 15, 2026 | |
| Tankbook: Aquarium Log | 4.0 / 5 (1) | Free | Aug 25, 2026 | Compare |
| FishDiary - Aquarium Log | – | Free | Oct 2, 2026 | Compare |
| AquaLog: Aquarium Tank Tracker | – | Free | Sep 29, 2026 | Compare |
| Fishroom – aquarium journal | 5.0 / 5 (2) | Free | Feb 14, 2026 | Compare |
| Aquarium Tank Tracker: AquaLog | 3.7 / 5 (3) | Free | May 29, 2026 | Compare |
| ReefFlow: Reef & Aquarium | – | Free | Oct 22, 2026 | Compare |