# Note Carpet vs DataStructureAndAlgorithm

The clearest difference is price: Note Carpet at Free against DataStructureAndAlgorithm's $7.99. Note Carpet also leads on device support (4 vs 2). On ads, in-app purchases and iOS requirement there is nothing between them.

Note Carpet is free to download; DataStructureAndAlgorithm costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Note Carpet | DataStructureAndAlgorithm |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Size | 2 MB | 12 MB |
| Requires iOS | **15.0** | 16.3 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Dr. Garbers Softwareentwicklung](https://appshunter.io/developer/549623621) | [Buydeepdiscount.com LLC](https://appshunter.io/developer/817177888) |

## What reviewers say

### Note Carpet

[App page](https://appshunter.io/ios/app/note-carpet/id1663681197)

**Features:** Vision Pro support

**In-app purchases:** none


### DataStructureAndAlgorithm

[App page](https://appshunter.io/ios/app/datastructureandalgorithm/id6503237307)

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

**In-app purchases:** none


## Frequently asked questions

### Is Note Carpet free?

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

### Is DataStructureAndAlgorithm free?

DataStructureAndAlgorithm costs $7.99, with no in-app purchases.

### Do Note Carpet or DataStructureAndAlgorithm have ads?

Neither Note Carpet nor DataStructureAndAlgorithm shows ads.

---

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