A verdict for every reading
No more looking up charts. Each value is marked in range or worth watching for your tank type, so you know at once if something needs attention.
Know your aquarium is healthy — in seconds
Log a water test and Aquairi instantly shows which values are in range, which need a look, and when the next water change is due.
- Free
- No install
- Works on any device
How it works
From sign-up to your first verdict in a few minutes.
Create your tank
Choose the tank type and volume. Quick Start adds the usual care reminders for you.
Log a water test
Type in the numbers from your test kit: temperature, pH, ammonia, nitrite, nitrate and more.
Get an instant verdict
Each value is checked against the range for your tank type, and your reminders show what to do next.
What Aquairi does for your tank
Water tests, reminders and the Health Score work in your browser today.
Reminders that keep the routine
Water changes, filter cleaning, testing. Mark a task done or skip it, and the next date is scheduled for you.
Health Score at a glance
A 0–100 score for each tank, built from recent tests and care, so you notice when things start to drift.
Also in Aquairi
Available in the web cabinet and in the Android app (closed testing).
AI assistant
Ask about your tank or send a photo of a fish or plant for a second opinion. Free, with a weekly message limit.
Photo journal
Keep albums of your tank and see how it changes over the months.
IoT sensors
Connect sensors and controllers to log readings automatically.
Simple, Transparent Pricing
Start free, upgrade when you're ready
Free
$0/forever
- 1000 MB photo storage
- Basic water parameter tracking
- Manual data entry
- Aquarium gallery
- Maintenance history
- Schedule management
IoT Premium
$2.99/mo
- Everything in Free
- Full API access
- Unlimited IoT devices
- Real-time monitoring
- Automated data collection
- Device alerts & notifications
- Priority support
Every new account includes 30 days of IoT Premium. No card needed: when the trial ends, you're moved to Free automatically.
Storage Add-on
Need more space? Add storage in 10 GB increments.
$0.99/ 10 GB
Frequently Asked Questions
1000 MB of photo storage, basic water parameter tracking, manual data entry, aquarium gallery, maintenance history, and schedule management. Create unlimited aquariums at no cost.
Every new account gets 30 days of IoT Premium for free. No credit card required — when the trial ends, you're moved to the Free plan automatically.
Yes! You can upgrade or downgrade your plan at any time. Changes take effect at the start of your next billing cycle.
You choose: auto-delete the oldest media or stop uploading until you free up space. You can also purchase additional storage in 10 GB increments for $0.99 each.
You can buy IoT Premium and extra storage in the web cabinet (Subscription page) or in the Aquairi Android app via Google Play. Payments are processed by Google Play or our payment partner — we never see your card details.
Yes, cancel anytime with no penalties. You keep access to premium features until the end of your current billing period.
Check on your tank today
Create a free account and log your first water test in a few minutes.
Start free in your browserPrefer the Android app? Get notified
Get notified when the Android app is public