# CodexSyntax vs Learn System Design & DSA

The clearest difference is price: CodexSyntax at Free against Learn System Design & DSA's $2.99. CodexSyntax also leads on iOS requirement (15.1 vs 17). Learn System Design & DSA's advantage is in-app purchases (none vs 4) and chart position (#186 vs unranked). On ads and device support there is nothing between them.

CodexSyntax is free to download; Learn System Design & DSA costs $2.99 up front. CodexSyntax sells 4 one-off in-app purchases. Learn System Design & DSA asks for nothing beyond the download.

## The numbers

| Metric | CodexSyntax | Learn System Design & DSA |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Best chart rank | — | **#186** |
| Size | 28 MB | 179 MB |
| Requires iOS | **15.1** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [ZST](https://appshunter.io/developer/1274473128) | [Shahbaz Khan](https://appshunter.io/developer/1479963383) |

## What reviewers say

### CodexSyntax

[App page](https://appshunter.io/ios/app/codexsyntax/id6752895210)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip $1.99 | $1.99 | one-time |
| Tip $2.99 | $2.99 | one-time |
| Tip $4.99 | $4.99 | one-time |
| Tip $9.99 | $9.99 | one-time |


### Learn System Design & DSA

[App page](https://appshunter.io/ios/app/learn-system-design-and-dsa/id6798520208)

**Currently charting:** #186 Top Paid · Education (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is CodexSyntax free?

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

### Is Learn System Design & DSA free?

Learn System Design & DSA costs $2.99, with no in-app purchases.

### Do CodexSyntax or Learn System Design & DSA have ads?

Neither CodexSyntax nor Learn System Design & DSA shows ads.

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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.*