# Smart Reef vs Reef Stability

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.

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.

## The numbers

| Metric | Smart Reef | Reef Stability |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.6 (19 ratings)](https://appshunter.io/ios/app/smart-reef/id1480355166/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 3.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 9 MB |
| Requires iOS | **14.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Reef Factory sp. z o.o.](https://appshunter.io/developer/1367901113) | [YUSUF AYDIN](https://appshunter.io/developer/6771871523) |

## What reviewers say

### Smart Reef

[App page](https://appshunter.io/ios/app/smart-reef/id1480355166)

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:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Warranty 3 years | $12.99 | one-time |
| Warranty 3 years | $17.99 | one-time |
| Warranty 3 years | $19.99 | one-time |
| Warranty 3 years | $24.99 | one-time |
| Warranty 3 years | $29.99 | one-time |
| Warranty 3 years | $34.99 | one-time |
| Warranty 3 years | $39.99 | one-time |
| Warranty 3 years | $49.99 | one-time |


### Reef Stability

[App page](https://appshunter.io/ios/app/reef-stability-dosing-tracker/id6799461220)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $6.99 | per month |
| Premium Annual | $39.99 | per year |
| Premium Lifetime | $89.99 | one-time |


## Frequently asked questions

### Is Smart Reef free?

Smart Reef is free to download, with in-app purchases available.

### Is Reef Stability free?

Reef Stability is free to download, with in-app purchases available.

### Do Smart Reef or Reef Stability have ads?

Neither Smart Reef nor Reef Stability shows ads.

### Which is updated more often, Smart Reef or Reef Stability?

Smart Reef ships an update every 3 months, and Reef Stability weekly. Most recently, Smart Reef was updated on September 26, 2026 and Reef Stability on September 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*