# AquaticLog vs Mobius

The clearest difference is review sentiment: AquaticLog at 71% against Mobius's 27%. AquaticLog also leads on rating (4.2 vs 2.0) and update cadence (weekly vs every 2 months). Mobius's advantage is in-app purchases (none vs 3) and iOS requirement (15.6 vs 18.1). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. AquaticLog sells 3 in-app purchases, starting at $4.99 per month. Mobius asks for nothing beyond the download.

AquaticLog holds the better App Store score, 4.2 against 2.0. Both are backed by a comparable volume of ratings — 401 and 328 respectively. Written reviews point the same way: 71% of AquaticLog's written reviews are positive against 27% of Mobius's.

AquaticLog ships an update weekly, Mobius every 2 months. Both last shipped on September 21, 2026.

## The numbers

| Metric | AquaticLog | Mobius |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (401 ratings)](https://appshunter.io/ios/app/aquaticlog/id583895470/reviews)** | [2.0 (328 ratings)](https://appshunter.io/ios/app/mobius/id1453744762/reviews) |
| Number of ratings | **401** | 328 |
| Positive reviews | **70.5% of reviews** | 27.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Freemium | **Free** |
| Size | 21 MB | 95 MB |
| Requires iOS | 18.1 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Lonnex Inc](https://appshunter.io/developer/1547270716) | [C2 Development, LLC](https://appshunter.io/developer/731463338) |

## What reviewers say

### AquaticLog

[App page](https://appshunter.io/ios/app/aquaticlog/id583895470)

Manage your aquarium with this comprehensive platform. Track water parameters, schedule maintenance, log livestock, and document your tank's progress with photos and videos. Connect controllers for automatic data import and sync across devices.

**Highlights:** Water parameter tracking, Smart reminders for maintenance, Livestock management, Equipment and dosing logs, Controller integration, Photo and video diary, Community features

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly Subscription | $4.99 | per month |
| Pro Yearly Membership | $39.99 | per year |
| Pro Lifetime Membership | $149.99 | one-time |


### 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


## Frequently asked questions

### Is AquaticLog free?

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

### Is Mobius free?

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

### Which has better reviews, AquaticLog or Mobius?

AquaticLog is rated higher. AquaticLog averages 4.2 out of 5 from 401 ratings, while Mobius averages 2.0 from 328 ratings.

### Do AquaticLog or Mobius have ads?

Neither AquaticLog nor Mobius shows ads.

### Which is updated more often, AquaticLog or Mobius?

AquaticLog ships an update weekly, and Mobius every 2 months. Most recently, AquaticLog was updated on September 21, 2026 and Mobius on September 21, 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.*