Smart Reef vs Reef Stability
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Device management
- Aquarium alerts
- Measurement history
- Operational status dashboard
- Planned job journal
- Preset sharing
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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
Reef Stability
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Reef Stability turns your own test results into the two things every reef keeper actually needs: how much to dose, and when to leave the tank alone. Log your alkalinity, calcium, magnesium and nutrients, and Reef Stability learns how fast your tank uses each one. Then it works out the daily dose to hold it steady — from your data, not a generic chart. When a wobble is just test-kit noise, it says so, instead of sending you chasing a number. WHAT IT DOES - Know what to change — a daily dose from your own tank's measured uptake - Stability first — it tells you when to do nothing - Every parameter on one clean screen: alkalinity, calcium, magnesium, nitrate, phosphate, salinity, temperature, pH - Trends that filter out test-kit scatter, so you see real drift - Safe by design — dose changes stay within reef-safe daily limits, with extra caution for SPS - Honest by design — sourced chemistry, and it never invents a number it can't stand behind - Your data is yours — full history and CSV export, free, forever - No account, no sign-up — your logs stay on your device FREE Log, track and export everything — free, with no time limit. REEF STABILITY PREMIUM Unlocks the dose recommendations, supplement forecasting and cross-parameter interpretation. Available monthly, annually, or as a one-time lifetime purchase. Stability over chasing numbers. --- Privacy Policy: https://reefstability.com/privacy Terms of Use: https://reefstability.com/terms Subscriptions are billed to your Apple ID. An auto-renewing subscription renews unless cancelled at least 24 hours before the end of the current period; manage or cancel anytime in your App Store account settings. A lifetime purchase is a one-time payment.
Screenshots
Verdict
The clearest difference is update cadence: Reef Stability at weekly against Smart Reef's every 3 months. Smart Reef's advantage is device support (3 vs 1) and iOS requirement (14.6 vs 18.0). On price, ads and in-app purchases 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. Smart Reef sells 8 one-off in-app purchases and Reef Stability sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
Smart Reef ships an update every 3 months, Reef Stability weekly. The most recent releases landed on September 26, 2026 and September 9, 2026 respectively.
| Parameter | Smart Reef | Reef Stability |
|---|---|---|
| Price | Free | Free |
| Rating | 1.6 (19 ratings) — better | — |
| Positive reviews | 3.8% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 4 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Reef Factory sp. z o.o. | YUSUF AYDIN |
In-app purchases
Smart Reef
- Warranty 3 years$12.99
- Warranty 3 years$17.99
- Warranty 3 years$19.99
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- 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
Reef Stability
- Premium Monthly$6.991 Month
- Premium Annual$39.991 Year
- Premium Lifetime$89.99









