
TankLog: Aquascape
Fish Tank Log & Reminders
About
This app helps you meticulously track your aquarium's water chemistry, maintenance, and livestock. It offers detailed logging for water parameters, customizable schedules, and equipment inventory, all while prioritizing user privacy with no data collection.
What's New in TankLog
1.43
September 9, 2026
v1.43 — PLANTS, PROPERLY NAMED Your logged plants now show their scientific name front and center — Vallisneria spiralis, not just "Val". The common English name appears alongside as a secondary label. Plant search also now recognizes scientific names, so you can search in Latin if that’s how you think about your plants. LIGHT & CO₂ AT A GLANCE Plant care cards color-code your requirements at a glance. Light: red for high, amber for medium, teal for low-medium, blue for low. CO₂: red if required or strongly recommended, amber if beneficial, teal if a little helps, blue if it’s not a factor. We also updated the plant database — Java Fern, Buce, Cryptocoryne, Water Wisteria, Fissidens Moss, Bacopa, and Pearl Weed are now correctly flagged as benefiting from CO₂. YOUR TANK, AT A GLANCE A new Inhabitants tile on the Tank tab shows your animals and plants in one snapshot — counts, types, and individual species pills. Tap the edit button to control what appears and in what order. CO₂ is now embedded directly in the Last Water Test card. It shows your calculated ppm, zone badge, a gauge bar with an animated needle, bubble animation, and a trend arrow comparing to your previous test. ANIMALS, RETHOUGHT The Animals summary is redesigned: total count, types, and group count at a glance, with pill tags for every group. Group photos now appear in the card header and expanded view. Group quantity is now a direct field — type how many you have. You can still track individual animals inside an expanded group using the new “+ Add Individual” button. TEST SETTINGS Ammonia and Nitrite are now optional — toggle them off in Test Settings if you don’t test for them. Grading is also tightened: any reading above 0 is immediately flagged red. The old 0.25 tolerance is gone. POLISH — Filter flow rate now shows L/h or L/min (selectable) for metric users — Param names (Ammonia, Nitrite, Nitrate) now appear in your app language throughout — Plant search suggestions now show scientific name, common name, light, and CO₂ info — Water change volume preview and several labels now fully localized Free. No login. No subscription.
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FAQ
What is TankLog's privacy policy?
TankLog is designed with privacy as a core feature. It requires no login, no account, and no subscription. All data is stored locally on your device, with no servers collecting or accessing your information. This means no analytics tracking and no third-party access to your aquarium records.
Can I track custom water parameters in TankLog?
Yes, you can customize which parameters appear when you log a water test. You can toggle optional parameters like Phosphate (PO₄) or TDS on or off, and even disable KH and GH if you don't test them. Ammonia and Nitrite are always tracked.
How does TankLog help with CO₂ management?
TankLog estimates dissolved CO₂ levels based on your pH and KH readings. It displays this estimate in color-coded zones (very low, low, ideal, high, at risk), which is particularly useful for planted tank enthusiasts aiming for optimal CO₂ ranges without stressing fish.
Does TankLog offer reminders for aquarium maintenance?
Yes, you can build a fully customizable maintenance schedule within TankLog. This includes tasks like water changes, filter cleans, fertilizer dosing, and equipment checks. The app will send push notifications when each task is due, and overdue tasks are flagged on the dashboard.
What devices is TankLog compatible with?
TankLog is available for iPhone, iPad, and iPod. It is designed to work across these Apple devices, allowing you to manage your aquarium logs wherever you go.
How often is TankLog updated?
The latest version of TankLog is 1.31, and it was last updated on June 25, 2026. While specific update frequency isn't detailed, this indicates active development and support for the application.
What is the user rating for TankLog?
TankLog has received an excellent rating of 5.0 stars from 3 user ratings. This high score suggests a very positive user experience and satisfaction with the app's features and functionality.
Can I export my aquarium data from TankLog?
Absolutely. TankLog allows you to export your full log at any time in a portable format. This ensures that your aquarium history belongs to you and can be easily transferred or backed up as needed.



