# Rapid Language vs K

The clearest difference is in-app purchases: Rapid Language at none against K's 4. K's advantage is update cadence (weekly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. K sells 4 one-off in-app purchases. Rapid Language asks for nothing beyond the download.

Rapid Language ships an update every 2 months, K weekly. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Rapid Language | K |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 197 MB | 51 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bartomiej Zukiewicz](https://appshunter.io/developer/1894252975) | [LiveMatch](https://appshunter.io/developer/1757957844) |

## What reviewers say

### Rapid Language

[App page](https://appshunter.io/ios/app/rapid-language/id6763881726)

**Features:** macOS Compatibility

**In-app purchases:** none


### K

[App page](https://appshunter.io/ios/app/k-tutorcall/id6785435735)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 50 Coins | $0.99 | one-time |
| 175 Coins | $2.99 | one-time |
| 650 Coins | $9.99 | one-time |
| 2,250 Coins | $29.99 | one-time |


## Frequently asked questions

### Is Rapid Language free?

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

### Is K free?

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

### Do Rapid Language or K have ads?

Neither Rapid Language nor K shows ads.

### Which is updated more often, Rapid Language or K?

Rapid Language ships an update every 2 months, and K weekly. Most recently, Rapid Language was updated on October 8, 2026 and K on October 10, 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.*