# Stringline vs CatBlock

The clearest difference is in-app purchases: CatBlock at none against Stringline's 1. Stringline's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Stringline sells 1 one-off in-app purchase. CatBlock asks for nothing beyond the download.

## The numbers

| Metric | Stringline | CatBlock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 weeks |
| Size | 13 MB | 200 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Thinking Systems LLC](https://appshunter.io/developer/1882858307) | [Chengdu Infinite Seek Technology Co., Ltd](https://appshunter.io/developer/1835571102) |

## What reviewers say

### Stringline

[App page](https://appshunter.io/ios/app/stringline-path-puzzle/id6786046085)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game Unlock | $2.99 | one-time |


### CatBlock

[App page](https://appshunter.io/ios/app/catblock-block-out-puzzle/id6787829216)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stringline free?

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

### Is CatBlock free?

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

### Do Stringline or CatBlock have ads?

CatBlock shows ads; Stringline does not.

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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.*