Comparison

Smart Reef vs D

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

Head to head
About

Smart Reef

Manage your marine aquarium with this app. It provides device management, alerts for issues, and detailed historical data. A central dashboard offers a clear overview of your aquarium's status and device operations.

Highlights
  • Device management
  • Aquarium alerts
  • Measurement history
  • Operational status dashboard
  • Planned job journal
  • Preset sharing
Features
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Functionality: • device management • alerts when any problems occur in the aquarium • presentation of measurements and the operational status of devices • device operation and measurements history • clear, collective dashboard with information on device operation • modern table of parameters measured in the aquarium • unique journal of planned jobs and aquarium task history integrated with devices Devices may be connected via a Wi-Fi network and your home router. Dashboard sharing, loading and sharing of presets with other users and many more useful features. Supported devices: • Thermo control - temperature controller • Thermo view - temperature monitor • TDS meter - reverse osmosis water monitor • Salinity guardian - salinity monitor • pH meter - pH monitor • Level sensor - water/liquid level meter • Level keeper - automatic water refill system • Smart pump - dosing pump • Power switcher - timing programmer / device switch • Reef flare - smart LED lamp • Smart roller • Smart tester • Dosing pumps • kH keeper

About

D

Features
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Control App for the D-D Spektrum high powered LED lights. Specifically developed for home and all captive reef aquariums. Create and adjust lighting schedules, set the perfect colour output and control power levels to suit your saltwater aquarium. User friendly and packed with simple to use features.

Screenshots

Smart Reef4 screens
D4 screens

Verdict

The call

The clearest difference is in-app purchases: D at none against Smart Reef's 11. D also leads on update cadence (every 2 weeks vs every 3 months) and iOS requirement (12.4 vs 14.6). Smart Reef's advantage is ads (none vs shown). On price 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. Smart Reef sells 8 one-off in-app purchases. D asks for nothing beyond the download.

UpkeepUpdate frequency

Smart Reef ships an update every 3 months, D every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
Smart Reef versus D: the parameters behind the verdict, then further details
ParameterSmart ReefD
PriceFreeFree
Rating1.5 (23 ratings) — better—
Positive reviews3.8% of reviews—
Number of ratings23 — better—
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.612.4 — better
Further details — not scored
Size4 MB66 MB
Age rating4+4+
DeveloperReef Factory sp. z o.o.D-D The Aquarium Solution Limited

In-app purchases

8 purchases

Smart Reef

One-time8
  • Warranty 3 years$12.99
  • Warranty 3 years$17.99
  • Warranty 3 years$19.99
Show 5 more
  • Warranty 3 years2 variants$24.99
  • Warranty 3 years$29.99
  • Warranty 3 years2 variants$34.99
  • Warranty 3 years2 variants$39.99
  • Warranty 3 years$49.99
None

D

No in-app purchases

Questions

Is Smart Reef free?
Smart Reef is free to download, with in-app purchases available.
Is D free?
D is free to download, with no in-app purchases.
Do Smart Reef or D have ads?
D shows ads; Smart Reef does not.
Which is updated more often, Smart Reef or D?
Smart Reef ships an update every 3 months, and D every 2 weeks. Most recently, Smart Reef was updated on October 24, 2026 and D on October 25, 2026.

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