# Butterfly Migration vs Fish Identifier

The clearest difference is in-app purchases: Butterfly Migration at none against Fish Identifier's 2. Butterfly Migration also leads on iOS requirement (11.0 vs 14.0). Fish Identifier's advantage is update cadence (monthly vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Fish Identifier sells 2 in-app purchases, starting at $2.99 per month. Butterfly Migration asks for nothing beyond the download.

Butterfly Migration ships an update every 4 months, Fish Identifier monthly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Butterfly Migration | Fish Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fish-identifier-scanner-guide/id6755715620/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 20 MB | 110 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DALLONSES S.L.](https://appshunter.io/developer/1110039358) | [UPQODE LLC](https://appshunter.io/developer/1846552687) |

## What reviewers say

### Butterfly Migration

[App page](https://appshunter.io/ios/app/butterfly-migration/id1515128525)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fish Identifier

[App page](https://appshunter.io/ios/app/fish-identifier-scanner-guide/id6755715620)

Instantly identify fish species from a photo using AI. Explore a vast database of marine life, earn achievements, and learn fascinating facts. Perfect for anglers, divers, and anyone curious about underwater ecosystems.

**Highlights:** AI-powered fish identification, Massive species database, Achievements and learning facts, User-friendly interface, Premium unlimited scans

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annual | $29.99 | per year |


## Frequently asked questions

### Is Butterfly Migration free?

Butterfly Migration 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 Butterfly Migration or Fish Identifier have ads?

Neither Butterfly Migration nor Fish Identifier shows ads.

### Which is updated more often, Butterfly Migration or Fish Identifier?

Butterfly Migration ships an update every 4 months, and Fish Identifier monthly. Most recently, Butterfly Migration was updated on October 25, 2026 and Fish Identifier on October 24, 2026.

---

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