# Tankly: Aquarium Tracker

> Tankly: Aquarium Tracker (iPhone/iPad app by Sau Nguyen.)

- Source: https://appshunter.io/ios/app/tankly-aquarium-tracker/id6826131967 (this page in markdown: same URL + `.md`)
- Developer: [Sau Nguyen](https://appshunter.io/developer/6818123257)
- Category: Lifestyle, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 25 MB
- Languages: American English
- Released: 2026-10-27
- Data updated: 2026-10-31

## What is Tankly?

Know your water at a glance.

Tankly is a simple, private logbook for your aquarium. Log water tests, track trends, cycle a new tank and never miss a water change. It works fully offline, needs no account and keeps your data on your phone.

LOG A TEST IN SECONDS
• Tap the color that matches your test tube or strip: pH, ammonia, nitrite, nitrate, temperature, GH, KH and phosphate
• Works with liquid kits, test strips or your own values
• Every reading is marked In range, Watch or Act now, with text and icons, not color alone

SEE WHAT'S OFF, AND WHAT TO DO
• After each test, Tankly shows which readings need attention and the common steps hobbyists take
• Target ranges for freshwater, planted, reef and brackish tanks, editable per tank
• Out-of-range readings can remind you to test again in 2 days

SPOT TRENDS BEFORE THEY'RE PROBLEMS
• Charts for every parameter with your target range and water changes marked
• Average, lowest and weekly rise at a glance
• Edit or delete any past test

CYCLE A NEW TANK WITH CONFIDENCE
• The cycle tracker follows ammonia, nitrite and nitrate through each stage
• Tankly tells you when your tank is cycled: 3 tests in a row with ammonia 0, nitrite 0 and nitrate present

NEVER MISS A WATER CHANGE
• Repeating tasks for water changes, tests, filter care, feeding, fertilizer or anything you like
• Repeat every few days or on chosen weekdays, with reminders at the time you pick
• Log water changes with conditioner, gravel vacuum and more

LIVESTOCK & JOURNAL
• Keep a list of your fish, inverts and plants with a history of what was added
• Write journal notes about your tank

PRIVATE BY DESIGN
• No account, no ads, no tracking. Your data never leaves your device
• Back up and restore your data as a file
• Gallons or liters, °F or °C. English and Vietnamese

TANKLY PRO
Free includes 1 tank and 30 days of trends. Pro unlocks:
• Unlimited tanks
• Full trend history (90 days, 1 year and beyond)
• Photo journal with side-by-side compare
• Home Screen and Lock Screen widgets
• CSV export of your tests

Choose a one-time lifetime purchase or a yearly subscription with a 7-day free trial.

SUBSCRIPTION DETAILS
Payment is charged to your Apple Account at confirmation of purchase. The yearly subscription renews automatically unless it is canceled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings. Any unused part of a free trial is forfeited when you buy a subscription.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://snapcoder.github.io/tankly/privacy.html

Tankly offers general fishkeeping information only. It is not veterinary advice.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Tankly Pro Yearly | $9.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Tankly Pro Lifetime | $19.99 | one-time |


## Is Tankly safe?

Not enough ratings yet to assess Tankly.

## Is Tankly legit?

Tankly: Aquarium Tracker appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Tankly is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-27

No release notes.

## More apps by Sau Nguyen

- [Cardify: Flashcards & Quiz](https://appshunter.io/ios/app/cardify-flashcards-and-quiz/id6818123255)
- [Montra: Budget & Expenses](https://appshunter.io/ios/app/montra-budget-and-expenses/id6821214258)

All apps by Sau Nguyen: https://appshunter.io/developer/6818123257

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*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 2026-10-31.*