HYDROS App vs OCTO aquatic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HYDROS App
Easily monitor and control your aquarium's vital parameters like temperature, pH, and salinity. Manage all your connected devices, including ATOs, lights, and pumps, with a user-friendly interface. Quick setup with preset configurations means no coding is required to get your system running.
- Monitor temperature, ORP, pH, salinity
- Control ATO, lights, heaters, pumps
- User-friendly interface
- Quick setup with presets
- Manage multiple devices and aquariums
- Set schedules and create modes
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Use the CoralVue HYDROS App to control and monitor HYDROS aquarium devices from your smartphone or tablet. The user-friendly interface allows you to easily monitor your aquarium's temperature, ORP, pH, alkalinity levels, salinity, and more. With just one tap, you can control your ATO, lights, heaters, pumps, skimmer, calcium reactor, RO/DI units, etc. Setup is quick and easy! With 18+ different preset configurations and growing, it will take only minutes to get all of your equipment set up and running, with no coding required. SUPPORTED DEVICES: -HYDROS Control X2, X4, XS, XD, X3, X4, XP8, X10 -HYDROS Kraken -HYDROS Minnow -HYDROS Launch -HYDROS WaveEngine, WaveEngine LT -IceCap Gyre Dual Pump WiFi Controller DISCOVER MORE: -Intuitive interface features multiple view options such as tile, text, or graph -Adjust your view settings to light mode, dark mode, or auto, which will automatically adjust to your mobile device's settings -Ability to manage multiple HYDROS devices and aquariums from one single-screen -Monitor and control WiFi outlets -Set schedules and create modes -Archive controller settings STAY CONNECTED We welcome you to join our HYDROS community at forum.coralvuehydros.com where you can ask questions, learn more about your HYDROS devices, and connect with other aquatic hobbyists like yourself.
OCTO aquatic
Control and connect to all OCTO WiFi-enabled products. This application enhances the user experience for managing your devices.
- Connect to OCTO WiFi products
- Control OCTO WiFi products
- Enhance device management
- Seamless integration
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Connect and Control for all OCTO WiFi enable product
Screenshots
Verdict
The clearest difference is review sentiment: HYDROS App at 62% against OCTO aquatic's 0%. HYDROS App also leads on rating (3.5 vs 1.0) and ratings volume (24 vs 2). OCTO aquatic's advantage is update cadence (monthly vs every 3 months) and iOS requirement (11.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
HYDROS App holds the better App Store score, 3.5 against 1.0. That said, the two scores are not equally well evidenced: HYDROS App has 24 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 62% of HYDROS App's written reviews are positive against 0% of OCTO aquatic's.
HYDROS App ships an update every 3 months, OCTO aquatic monthly. The most recent releases landed on October 29, 2026 and October 8, 2026 respectively.
| Parameter | HYDROS App | OCTO aquatic |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (24 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 62.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 24 — better | 2 |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 70 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Coralvue | Honya Co.,Ltd |
Customer experience
HYDROS App
OCTO aquatic
In-app purchases
HYDROS App
No in-app purchases
OCTO aquatic
No in-app purchases
