# Mobius vs Reef.Tools

The clearest difference is rating: Reef.Tools at 3.0 against Mobius's 2.0. Reef.Tools also leads on update cadence (daily vs every 2 months). Mobius's advantage is review sentiment (27% vs 0%) and ratings volume (328 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Reef.Tools holds the better App Store score, 3.0 against 2.0. That said, the two scores are not equally well evidenced: Mobius has 328 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 27% of Mobius's written reviews are positive against 0% of Reef.Tools's, so the app with the better star average is not the one people write more warmly about.

Mobius ships an update every 2 months, Reef.Tools daily. The most recent releases landed on September 21, 2026 and June 7, 2026 respectively.

## The numbers

| Metric | Mobius | Reef.Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (328 ratings)](https://appshunter.io/ios/app/mobius/id1453744762/reviews) | **[3.0 (2 ratings)](https://appshunter.io/ios/app/reeftools/id6739948464/reviews)** |
| Number of ratings | **328** | 2 |
| Positive reviews | **27.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Free | Free |
| Size | 95 MB | 32 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [C2 Development, LLC](https://appshunter.io/developer/731463338) | [Ivena LLC](https://appshunter.io/developer/1787597398) |

## 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


### Reef.Tools

[App page](https://appshunter.io/ios/app/reeftools/id6739948464)

This app simplifies reef tank maintenance with science-backed tools. It offers a precision dosing calculator for over 30 elements, customizable schedules, and insights into water chemistry. Compare your tank's parameters to natural ocean values.

**Highlights:** Precision dosing calculator for 30+ elements, Customizable dosing schedules, Reef chemistry insights, Support for multiple brands and custom targets, Comparison to natural ocean parameters

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mobius free?

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

### Is Reef.Tools free?

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

### Which has better reviews, Mobius or Reef.Tools?

Reef.Tools is rated higher. Mobius averages 2.0 out of 5 from 328 ratings, while Reef.Tools averages 3.0 from 2 ratings.

### Do Mobius or Reef.Tools have ads?

Neither Mobius nor Reef.Tools shows ads.

### Which is updated more often, Mobius or Reef.Tools?

Mobius ships an update every 2 months, and Reef.Tools daily. Most recently, Mobius was updated on September 21, 2026 and Reef.Tools on June 7, 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.*