# Vokai vs Programming Language Semantics

The clearest difference is in-app purchases: Programming Language Semantics at none against Vokai's 2. Vokai's advantage is iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Vokai sells 2 in-app purchases, starting at $3.99 per month. Programming Language Semantics asks for nothing beyond the download.

## The numbers

| Metric | Vokai | Programming Language Semantics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Size | 72 MB | 38 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Luu Dong](https://appshunter.io/developer/1500832999) | [AFTW LLC](https://appshunter.io/developer/1886356149) |

## What reviewers say

### Vokai

[App page](https://appshunter.io/ios/app/vokai-ai-language-learning/id6747542157)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic | $3.99 | per month |
| Premium | $7.99 | per month |


### Programming Language Semantics

[App page](https://appshunter.io/ios/app/programming-language-semantics/id6773252205)

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

**In-app purchases:** none


## Frequently asked questions

### Is Vokai free?

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

### Is Programming Language Semantics free?

Programming Language Semantics is free to download, with no in-app purchases.

### Do Vokai or Programming Language Semantics have ads?

Neither Vokai nor Programming Language Semantics 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.*