Quick answer
You mostly open a reef app to buy and sell corals, fish, and inverts from other hobbyists and established vendors? ReefBay is purpose-built for that. 10K reefers is a real trading floor, the vendor partnerships are real, and the marketplace transactions work.
If your priority is parameters, dosing, livestock, equipment, lighting, maintenance, expenses, monitoring integrations, and portable AI exports, Reef Trak is built around that connected tank record. ReefDock provides multi-retailer product search rather than ReefBay's peer-to-peer marketplace.
Competitive information last verified: August 31, 2026.
Changes from the earlier comparison
| Field | Verified change |
|---|---|
| Home-screen widgets | ↑ Added “No” → Yes |
| Tank management | ↑ Expanded Basic tracking → parameter charts, dosing and spending analytics, recurring reminders, and livestock and equipment histories |
Feature comparison
| Capability | Reef Trak | ReefBay |
|---|---|---|
| Parameters | 55+ incl. trace elements | ✓ |
| Dosing logs | ✓ | ✓ |
| Livestock catalog | 1,800+ species built-in | ✓ |
| Equipment records | ✓ | ✓ |
| Maintenance scheduling | Yes, custom intervals incl. yearly | ✓ |
| PAR Map | ✓ | ✗ |
| Expense tracking | Yes + Receipt Scan Assist | Spending analytics |
| Home-screen widgets | ✓ | ✓ |
| Controller imports | 5 vendors, read-only | ✗ |
| ICP test imports | 9 supported providers | Not advertised in reviewed official sources |
| Marketplace / product search | ReefDock multi-retailer product search | Peer-to-peer and vendor marketplace |
| Community forums | No (in-app) | ✓ |
| AI approach | TrakAI: bring your own engine | Closed AI insights |
| Web Portal | Yes (reeftrak.com) | ✗ |
| Pricing | Free + $9.99 lifetime | Free + DeepDive subs $4.99 / $29.99 / $39.99 |
| Platforms | iOS + Android + Web Portal | iOS + iPad + Mac (M1+) + Android |
Where ReefBay wins
The peer-to-peer marketplace is the real differentiator. ReefBay advertises a 10K-reefer base and 30+ vendor partnerships for corals, fish, inverts, and reef equipment.
The community forums are also active. For reefers whose primary value from a reef app is shopping and discussion, ReefBay is built around that. The tracking features support the marketplace experience rather than the other way around.
Where Reef Trak takes a different approach
Reef Trak focuses on the following connected-management capabilities. This list describes Reef Trak directly instead of assuming what ReefBay can never add:
- PAR Map for reef lighting analysis with photo overlay.
- Receipt Scan Assist that converts paper receipts into structured expenses.
- Home-screen widgets for at-a-glance parameter and maintenance status; ReefBay now offers widgets too.
- Read-only Apex and HYDROS imports, Alkatronic, Mastertronic, and AquaWiz paths where available, plus optional Home Assistant monitoring.
- ICP test imports from nine supported providers.
- TrakAI bring-your-own-AI exports that work with ChatGPT, Claude, Gemini, or local LLMs.
- A full Web Portal at reeftrak.com, not just a mobile mirror.
- A one-time $9.99 lifetime unlock with no subscription.
ReefDock now provides multi-retailer product search inside Reef Trak. It is not a peer-to-peer marketplace and should not be presented as the same transaction model as ReefBay.
Can you use both?
Yes. Plenty of reefers use Reef Trak for tracking and ReefBay for community and peer-to-peer trades. They cover different parts of the workflow and do not step on each other.
If you are picking one, the question is what you spend most of your reef-app time doing. Tracking and managing the tank? Reef Trak. Shopping, trading, and chatting? ReefBay.