# CalystrixCard Carnival vs Latch Blocks

The clearest difference is ads: CalystrixCard Carnival at none against Latch Blocks's shown. CalystrixCard Carnival also leads on iOS requirement (14.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CalystrixCard Carnival ships an update every 6 days, Latch Blocks every 3 days. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CalystrixCard Carnival | Latch Blocks |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 days | **Every 3 days** |
| Size | 25 MB | 6 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [ZEYNEP UMUT](https://appshunter.io/developer/6793939628) | [Joyce Lynch](https://appshunter.io/developer/6807055451) |

## What reviewers say

### CalystrixCard Carnival

[App page](https://appshunter.io/ios/app/calystrixcard-carnival/id6793939626)

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

**In-app purchases:** none


### Latch Blocks

[App page](https://appshunter.io/ios/app/latch-blocks/id6807055449)

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

**In-app purchases:** none


## Frequently asked questions

### Is CalystrixCard Carnival free?

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

### Is Latch Blocks free?

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

### Do CalystrixCard Carnival or Latch Blocks have ads?

Latch Blocks shows ads; CalystrixCard Carnival does not.

### Which is updated more often, CalystrixCard Carnival or Latch Blocks?

CalystrixCard Carnival ships an update every 6 days, and Latch Blocks every 3 days. Most recently, CalystrixCard Carnival was updated on October 11, 2026 and Latch Blocks on October 24, 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.*