Plans for every aquarist.
Start free. Upgrade when you’re ready. No surprises.
FREE
$0
forever free
✓ Up to 2 tanks
✓ Unlimited inhabitants per tank
✓ Basic health logs
✓ Compatibility checker
– AI water test grading
– AI photo diagnosis
Get Started FreeHOBBYIST
$7/mo
billed monthly
✓ Up to 10 tanks
✓ Unlimited inhabitants per tank
✓ Full health logs + medication tracking
✓ Compatibility checker
✓ AI water test grading (photo scan)
✓ AI photo diagnosis
Start HobbyistBREEDER
$18/mo
billed monthly
✓ Unlimited tanks
✓ Everything in Hobbyist
✓ Breeding pair + spawn logs
✓ Fry batch tracking + sales log
✓ Full medical history per inhabitant
✓ Lineage tracking
Start BreederCOMPANY
$60/mo
Starter – 3 seats included (see below)
✓ Multi-user access
✓ Everything in Breeder
✓ Tech scheduling + service logs
✓ Client tank report export
✓ Role-based permissions
✓ Priority support
See Company PlansCompare All Features
| Feature | Free | Hobbyist | Breeder | Company |
|---|---|---|---|---|
| Core Features | ||||
| Number of tanks | 2 | 10 | Unlimited | Unlimited |
| Inhabitants per tank | Unlimited | Unlimited | Unlimited | Unlimited |
| Compatibility checker | ✓ | ✓ | ✓ | ✓ |
| Basic health logs | ✓ | ✓ | ✓ | ✓ |
| AI Features | ||||
| AI water test grading (photo) | – | ✓ | ✓ | ✓ |
| AI photo diagnosis | – | ✓ | ✓ | ✓ |
| Health Tracking | ||||
| Medication tracking | – | ✓ | ✓ | ✓ |
| Full medical history per inhabitant | – | – | ✓ | ✓ |
| Breeder Tools | ||||
| Breeding pair + spawn logs | – | – | ✓ | ✓ |
| Fry batch tracking + sales log | – | – | ✓ | ✓ |
| Lineage tracking | – | – | ✓ | ✓ |
| Company Tools | ||||
| Multi-user access | – | – | – | ✓ |
| Tech scheduling + service logs | – | – | – | ✓ |
| Client tank report export | – | – | – | ✓ |
| Role-based permissions | – | – | – | ✓ |
Frequently Asked Questions
Can I upgrade or downgrade anytime?
Yes. You can upgrade, downgrade, or cancel at any time from your account settings. Changes take effect at the start of your next billing cycle. Your data is always preserved when switching plans.
What happens to my data if I cancel?
Your data stays intact. If you cancel a paid plan, your account downgrades to Free. If you have more than 2 tanks, those tanks are locked (read-only) until you re-subscribe or remove tanks to stay within the Free limit.
How does AI water test grading work?
Take a photo of your test strip with your phone and upload it to Tank Wiki. Our AI reads the color pads and converts them into parameter values – pH, ammonia, nitrite, nitrate, and more – then flags anything outside safe range for your specific inhabitants.
Is there a free trial for paid plans?
The Free plan is your trial – it never expires. You can explore Tank Wiki with 2 tanks before committing to a paid plan. When you’re ready to unlock more tanks or AI features, upgrading takes about 30 seconds.
Start free. No credit card.
Track 2 tanks free, forever. Upgrade anytime when your collection grows.