# Shellkeep vs Fishfish retro

The clearest difference is in-app purchases: Fishfish retro at none against Shellkeep's 4. Shellkeep's advantage is update cadence (weekly vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Shellkeep sells 4 one-off in-app purchases. Fishfish retro asks for nothing beyond the download.

Shellkeep ships an update weekly, Fishfish retro monthly. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Shellkeep | Fishfish retro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (31 ratings)](https://appshunter.io/ios/app/shellkeep-card-collector/id6757331713/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 58 MB | 4 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hamlab AB](https://appshunter.io/developer/1526276751) | [LAURENT STEPHANE KENNEL](https://appshunter.io/developer/6778353709) |

## What reviewers say

### Shellkeep

[App page](https://appshunter.io/ios/app/shellkeep-card-collector/id6757331713)

Collect, merge, and battle unique cards with thousands of possibilities. Hunt for ultra-rare holographic Shinies and compete with other players in live auctions and club bounties. Build your ultimate collection and test your luck.

**Highlights:** Generate and collect thousands of cards, Hunt for ultra-rare holographic Shinies, Bid, deal, and sell cards, Join clubs to team up with collectors, Compete in live auctions and daily deals, No advertisements

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quick Gems | $0.99 | one-time |
| Small Gems | $2.99 | one-time |
| Big Gems | $6.99 | one-time |
| Mega Gems | $14.99 | one-time |


### Fishfish retro

[App page](https://appshunter.io/ios/app/fishfish-retro/id6778353707)

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

**In-app purchases:** none


## Frequently asked questions

### Is Shellkeep free?

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

### Is Fishfish retro free?

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

### Do Shellkeep or Fishfish retro have ads?

Neither Shellkeep nor Fishfish retro shows ads.

### Which is updated more often, Shellkeep or Fishfish retro?

Shellkeep ships an update weekly, and Fishfish retro monthly. Most recently, Shellkeep was updated on October 24, 2026 and Fishfish retro on October 14, 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.*