
Tanksmith
Offline reef tank logbook
About
This offline logbook helps reef tank enthusiasts meticulously track water parameters, equipment maintenance, and livestock. It offers detailed logging for various parameters and test kits, with advanced features like dosing intelligence and coral growth timelines available through a one-time purchase.
What's New in Tanksmith
2.4
October 12, 2026
Dosing numbers are corrected. The strengths behind the dosing analyzer were wrong for every recipe, so the recommended mL were far too high. Each one now uses the manufacturer's own published figure. The number is also labelled as an amount to add on top of what you already dose, which is what the trend in your readings measures. If you followed an earlier recommendation, retest before you dose again. Equipment tracking works. Add a skimmer, return pump, heater or RODI stage, set its service interval, swipe to mark it serviced, and edit or delete it. You can now delete a tank, a reading or an animal, and mark an animal as lost. A nitrate or phosphate result of zero saves instead of being refused, and changing the parameter in Log Reading no longer keeps the previous number.
MoreSubscriptions & In-App Purchases
$9.99
Tanksmith Pro
Unlimited tanks, readings, photos & dosing.
Developer apps
FAQ
Does Tanksmith have ads?
No, Tanksmith is completely ad-free. The developers emphasize a private and uninterrupted user experience.
What is the cost of Tanksmith Pro?
Tanksmith Pro is a one-time purchase of $9.99. There are no subscriptions or additional in-app purchases beyond this.
Can I use Tanksmith on multiple devices?
Tanksmith is designed for offline use on a single device. The free tier supports one tank, and the Pro version enables multi-tank support on that device.
How often is Tanksmith updated?
The latest version, 2.3, was released on September 19, 2026. Updates are provided to enhance functionality and reliability.
What devices does Tanksmith support?
Tanksmith is available for iPhone and iPad, making it accessible to a wide range of iOS users.
Is Tanksmith suitable for beginners?
The free tier of Tanksmith offers plenty of features to evaluate its suitability for your reef keeping style. It's built for serious reefers but can be a valuable tool for those learning.
What kind of privacy does Tanksmith offer?
Tanksmith prioritizes user privacy by not collecting, transmitting, or sharing any data. It operates entirely offline with no third-party SDKs.
What age rating does Tanksmith have?
Tanksmith has an age rating of 4+, indicating it is suitable for a broad audience.




