# Mobius vs Smart Reef

The clearest difference is in-app purchases: Mobius at none against Smart Reef's 11. Mobius also leads on rating (2.0 vs 1.6) and review sentiment (27% vs 4%). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Smart Reef sells 8 one-off in-app purchases. Mobius asks for nothing beyond the download.

Mobius holds the better App Store score, 2.0 against 1.6. That said, the two scores are not equally well evidenced: Mobius has 328 ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 27% of Mobius's written reviews are positive against 4% of Smart Reef's.

Mobius ships an update every 2 months, Smart Reef every 3 months. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Mobius | Smart Reef |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (328 ratings)](https://appshunter.io/ios/app/mobius/id1453744762/reviews)** | [1.6 (19 ratings)](https://appshunter.io/ios/app/smart-reef/id1480355166/reviews) |
| Number of ratings | **328** | 19 |
| Positive reviews | **27.5% of reviews** | 3.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 95 MB | 4 MB |
| Requires iOS | 15.6 | **14.6** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [C2 Development, LLC](https://appshunter.io/developer/731463338) | [Reef Factory sp. z o.o.](https://appshunter.io/developer/1367901113) |

## What reviewers say

### Mobius

[App page](https://appshunter.io/ios/app/mobius/id1453744762)

This app provides intelligent control for aquarium equipment, simplifying management of multiple tanks. Create custom scenes, schedules, and access quick status updates to maintain your aquatic environment with ease.

**Highlights:** Manage multiple tanks, Create custom scenes, Drag-and-drop scheduling, Lighting control with templates, Flow control for pumps, Dosing automation and tracking

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 🚀 Intuitive interface
- 👍 Controllability of devices
- 👍 Potential for future improvements

**What reviewers complain about**

- 🐛 Connectivity issues
- 🐛 Time/date sync problems
- 🐛 Unreliable performance
- 🐛 Buggy and glitchy
- 🐛 Difficult to navigate

**Reported bugs**

- Constant disconnections
- Inability to add/connect devices
- Lighting schedule not working as expected
- Time/date resets randomly
- Crashes and freezes

**Requested features**

- Remote access and control
- Improved lighting schedule customization
- Pump/device off option
- Sync settings across devices
- Better documentation and tutorials


### 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 |


## Frequently asked questions

### Is Mobius free?

Mobius is free to download, with no in-app purchases.

### Is Smart Reef free?

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

### Which has better reviews, Mobius or Smart Reef?

Mobius is rated higher. Mobius averages 2.0 out of 5 from 328 ratings, while Smart Reef averages 1.6 from 19 ratings.

### Do Mobius or Smart Reef have ads?

Neither Mobius nor Smart Reef shows ads.

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

Mobius ships an update every 2 months, and Smart Reef every 3 months. Most recently, Mobius was updated on October 5, 2026 and Smart Reef on October 12, 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.*