# MO vs Fish Identifier

The clearest difference is in-app purchases: MO at none against Fish Identifier's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Fish Identifier sells 2 in-app purchases, starting at $4.99 per 7 days. MO asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | MO | Fish Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fish-identifier-fishium/id6752485636/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Freemium |
| Size | 37 MB | 48 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hbits](https://appshunter.io/developer/1542180368) | [Roman Pieskov](https://appshunter.io/developer/1758891658) |

## What reviewers say

### MO

[App page](https://appshunter.io/ios/app/motus/id1606379317)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fish Identifier

[App page](https://appshunter.io/ios/app/fish-identifier-fishium/id6752485636)

Instantly identify fish species using AI by taking a photo. Access a vast database with detailed information on biology, habitat, and behavior. Track your discoveries and test your knowledge with interactive quizzes.

**Highlights:** AI-powered fish identification, Extensive database of 30,000+ species, Detailed species information, Identification history, Interactive learning quizzes, Customizable measurement units

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 Week | $4.99 | per 7 days |
| Premium 1 Year | $29.99 | per year |


## Frequently asked questions

### Is MO free?

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

### Is Fish Identifier free?

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

### Do MO or Fish Identifier have ads?

Neither MO nor Fish Identifier shows ads.

### Which is updated more often, MO or Fish Identifier?

MO ships an update every 2 months, and Fish Identifier every 2 months. Most recently, MO was updated on November 7, 2026 and Fish Identifier on November 5, 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.*