Comparison

HYDROS App vs ReefCtrl

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

ReefCtrl

Manage your reef aquarium with this intelligent platform. Monitor equipment, track water chemistry, and receive smart alerts. It integrates with Neptune Apex controllers and offers AI-powered assistance for hobbyists.

Highlights
  • Neptune Apex integration
  • Smart alerts and notifications
  • Water chemistry tracking
  • Dosing management
  • AI reef assistant
  • Equipment and livestock management
Features
Read full description

Take full control of your reef aquarium with ReefCtrl — the intelligent reef management platform built for serious hobbyists. NEPTUNE APEX INTEGRATION Sync your Apex controller automatically via apex fusion — no port forwarding or tunnels needed. Monitor all outlets live, toggle equipment with safety confirmations, and track power consumption in real time. SMART ALERTS Get push notifications the moment something needs attention — parameter spikes, Apex offline, maintenance due, or dosing containers running low. Dismiss with intelligent cooldowns so you only hear what matters. WATER CHEMISTRY TRACKING Log and chart Alkalinity, Calcium, Magnesium, pH, Salinity, Nitrate, Phosphate and more. Visualise 30-day trends. Import ICP lab results from Triton, ATI, or Fauna Marin with AI-powered analysis. DOSING MANAGEMENT Track Fauna Marin Balling, ESV B-Ionic, Red Sea Reef Foundation, Kalkwasser and more. Monitor Neptune DDR container levels live. Log doses with one tap — no typing required. AI REEF ASSISTANT Chat with AI about your tank. Generate Neptune Apex programming code in plain English. Get personalised recommendations based on your actual parameters. EQUIPMENT & LIVESTOCK Manage your full equipment list with maintenance schedules and reminders. Track your fish and coral with species-specific care notes. ReefCtrl works with or without a Neptune Apex. Start with manual parameter logging and add automation as you grow.

Screenshots

HYDROS App3 screens
ReefCtrl4 screens

Verdict

The call

The clearest difference is review sentiment: ReefCtrl at 100% against HYDROS App's 62%. ReefCtrl also leads on update cadence (every 9 days vs every 3 months) and iOS requirement (13.0 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

HYDROS App ships an update every 3 months, ReefCtrl every 9 days. The most recent releases landed on October 9, 2026 and October 4, 2026 respectively.

Scorecard3 real differences · 7 level
HYDROS App versus ReefCtrl: the parameters behind the verdict, then further details
ParameterHYDROS AppReefCtrl
PriceFreeFree
Rating3.7 (22 ratings) — better—
Positive reviews62.3% of reviews100.0% of reviews — better
Number of ratings22 — better—
Update frequencyEvery 3 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size70 MB3 MB
Age rating4+4+
DeveloperCoralvueJayanth Vignesh Ramachandran

Customer experience

HYDROS App

All ratings22 ratings
Positive63.6%
Neutral9.1%
Negative27.3%
Written reviews77 reviews
Positive62.3%
Neutral7.8%
Negative29.9%

ReefCtrl

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

HYDROS App

No in-app purchases

None

ReefCtrl

No in-app purchases

Questions

Is HYDROS App free?
HYDROS App is free to download, with no in-app purchases.
Is ReefCtrl free?
ReefCtrl is free to download, with no in-app purchases.
Do HYDROS App or ReefCtrl have ads?
Neither HYDROS App nor ReefCtrl shows ads.
Which is updated more often, HYDROS App or ReefCtrl?
HYDROS App ships an update every 3 months, and ReefCtrl every 9 days. Most recently, HYDROS App was updated on October 9, 2026 and ReefCtrl on October 4, 2026.

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