Comparison

Reefly vs ReefCMD

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

Head to head
About

Reefly

Features
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KNOW YOUR REEF IS HEALTHY. IN SECONDS. ReefLog turns raw water test numbers into a clear tank health score - so you stop guessing and start knowing. Log your parameters, see instant colour-coded feedback (Good · Near limit · Out of range), and track trends over time. Whether you keep a saltwater reef, freshwater community, or planted aquarium, ReefLog gives your tank a grade every time you log. ----------------------- WHAT YOU CAN DO ----------------------- - Log pH, alkalinity, calcium, magnesium, ammonia, nitrate, salinity and temperature - See instant status feedback as you type — no guesswork - View trend charts with safe-range bands so problems are visible before they become emergencies - Set maintenance reminders — water changes, feeding, dosing — so nothing slips - Works for reef, saltwater, freshwater, and planted aquariums TANK HEALTH SCORE --------------------- After every log session, ReefLog grades your tank (A+, A, B+…) based on how your parameters compare to proven safe ranges. One glance tells you everything. ------------------ FREE TO START ------------------ Log parameters and view charts for free. Upgrade to Pro for: - Unlimited parameter history (beyond 30 days) - Unlimited maintenance reminders - iCloud sync across all your Apple devices - Full historical charts Built for hobbyists who take their tanks seriously. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ReefCMD

Manage your saltwater aquarium parameters, dosing, and livestock with this app. Track water quality, log maintenance, and get a health score for your reef tank. Features an animal library and controller integration.

Highlights
  • Track water parameters (alkalinity, calcium, etc.)
  • Log dosing and maintenance
  • Reef tank Health Score
  • Animal and pest library
  • Controller integration
Features
Read full description

ReefCMD is the modern way to manage your reef tank — water parameters, dosing, livestock, and controller data in one fast, clean app built for saltwater aquarium keepers. Stop juggling spreadsheets, notebooks, and clunky web or controller apps. Integrate your Apex (or log a test in seconds), watch your trends, and catch problems before your corals do. WHAT YOU CAN DO • Track every water parameter — alkalinity, calcium, magnesium, salinity, pH, nitrate, phosphate, temperature, and ORP — with clear trend charts over time. • Log dosing, water changes, and maintenance so nothing slips through the cracks. • Get a reef tank Health Score that turns your numbers into a single, at-a-glance read on tank stability. • Browse a deep animal library of fish, coral, and invertebrates — plus a pest guide — to plan your stocking list and wish list. • Apex now and built controller-neutral, with more devices on the way. BUILT FOR REEFERS Whether you run a nano reef or a mixed-reef SPS display, ReefCMD keeps your reef tank on track. Fast logging, honest charts, and the water parameters that actually matter — alkalinity, calcium, magnesium, and salinity — front and center. PRICING ReefCMD is free to try. A paid subscription unlocks the full app: unlimited logging, full history, the Health Score, the Bridge, and the complete animal library. Subscriptions renew automatically; cancel anytime in your account settings. Stay humble — the ocean always wins. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Questions? info@reefcmd.com

Screenshots

Reefly3 screens
ReefCMD4 screens

Verdict

The call

The clearest difference is update cadence: Reefly at daily against ReefCMD's every 3 weeks. ReefCMD's advantage is iOS requirement (15.0 vs 18.6). On price, ads, in-app purchases and device support 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. Reefly sells 2 in-app purchases, starting at $3.99 per month and ReefCMD sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Reefly ships an update daily, ReefCMD every 3 weeks. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 7 level
Reefly versus ReefCMD: the parameters behind the verdict, then further details
ParameterReeflyReefCMD
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyDaily — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.615.0 — better
Further details — not scored
Size3 MB18 MB
Age rating4+4+
DeveloperJustinas KristopaitisReefCMD LLC

In-app purchases

2 purchases

Reefly

Subscriptions2
  • ReefLog Pro7 Days trial$3.991 Month
  • ReefLog Pro7 Days trial$17.991 Year
2 purchases

ReefCMD

Subscriptions2
  • ReefCMD Pro — Monthly$6.991 Month
  • ReefCMD Pro — Annual$69.991 Year

Questions

Is Reefly free?
Reefly is free to download, with in-app purchases available.
Is ReefCMD free?
ReefCMD is free to download, with in-app purchases available.
Do Reefly or ReefCMD have ads?
Neither Reefly nor ReefCMD shows ads.
Which is updated more often, Reefly or ReefCMD?
Reefly ships an update daily, and ReefCMD every 3 weeks. Most recently, Reefly was updated on October 31, 2026 and ReefCMD on October 28, 2026.

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