# Crystal Identifier Rock guide vs Fish Identifier

The clearest difference is ads: Crystal Identifier Rock guide at none against Fish Identifier's shown. Crystal Identifier Rock guide also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). Fish Identifier's advantage is update cadence (every 3 weeks vs every 3 months). On price and in-app purchases there is nothing between them.

Both are free to download. Crystal Identifier Rock guide sells 2 in-app purchases, starting at $4.99 per 7 days and Fish Identifier sells 5 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Crystal Identifier Rock guide ships an update every 3 months, Fish Identifier every 3 weeks. The most recent releases landed on October 27, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Crystal Identifier Rock guide | Fish Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (11 ratings)](https://appshunter.io/ios/app/fish-identifier-96-accurate/id6745837821/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 34 MB | 29 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Semen Sharyhin](https://appshunter.io/developer/1463206827) | [Nuclear Cyborg Corp](https://appshunter.io/developer/910010732) |

## What reviewers say

### Crystal Identifier Rock guide

[App page](https://appshunter.io/ios/app/crystal-identifier-rock-guide/id6737513257)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crystal Identifier Weekly | $4.99 | per 7 days |
| Crystal Identifier Yearly | $24.99 | per year |


### Fish Identifier

[App page](https://appshunter.io/ios/app/fish-identifier-96-accurate/id6745837821)

Identify fish species from photos with high accuracy. Access detailed information on over 600 species, including scientific data, fishing tips, and conservation status. Log your catches in a personal photo book.

**Highlights:** AI photo fish identification, 600+ species database, Detailed fish information, Fishing tips and records, Personal catch logbook, Scientific and common names

**Features:** Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full access - 1 week | $3.99 | per 7 days |
| Full access - 1 month | $4.99 | per month |
| Full access - 3 months | $7.99 | per 3 months |
| Full access - 6 months | $10.99 | per 6 months |
| Full access  - 1 year | $18.99 | per year |


## Frequently asked questions

### Is Crystal Identifier Rock guide free?

Crystal Identifier Rock guide is free to download, with in-app purchases available.

### Is Fish Identifier free?

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

### Do Crystal Identifier Rock guide or Fish Identifier have ads?

Fish Identifier shows ads; Crystal Identifier Rock guide does not.

### Which is updated more often, Crystal Identifier Rock guide or Fish Identifier?

Crystal Identifier Rock guide ships an update every 3 months, and Fish Identifier every 3 weeks. Most recently, Crystal Identifier Rock guide was updated on October 27, 2026 and Fish Identifier on October 17, 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.*