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
1.36
July 21, 2026
v1.36 — YOUR TANK, YOUR LOOK COLOR ASSIST A new per-tank toggle in Tank Specs lets you turn off the health-colored borders on all your tiles — Grade, Last Test, Care Schedule, CO₂, and your care log cards all go back to neutral grey. Useful if you find the color signals distracting or just prefer a cleaner look. Your data and grades don't change — only the borders. ACHIEVEMENT COUNT The Overall Health tile now shows how many badges you've earned at a glance, right next to the achievements header. DATES, EVERYWHERE Every care tile now shows the actual date (not just "X days ago") in the same consistent format — Last Changed, Last Dosed, Last Fed, Last Cleaned. Next Due tiles also show the exact upcoming date. POLISH The back button on Achievement pages now nudges left — consistent with the rest of the app. Param Trends shows the record count right inside the selector button. 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.