# K vs Unit Converter

The clearest difference is in-app purchases: K at none against Unit Converter's 1. K also leads on iOS requirement (8.0 vs 12.0). Unit Converter's advantage is update cadence (every 2 weeks vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Unit Converter sells 1 one-off in-app purchase. K asks for nothing beyond the download.

K ships an update every 3 weeks, Unit Converter every 2 weeks. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | K | Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 10 MB | 29 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HMAUDIO Technology Co.,Ltd](https://appshunter.io/developer/1257360532) | [伟鹏 李](https://appshunter.io/developer/1817642925) |

## What reviewers say

### K

[App page](https://appshunter.io/ios/app/k-audio-72/id1257360533)

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-easyunit/id6754090225)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Premium Membership | $0.99 | one-time |


## Frequently asked questions

### Is K free?

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

### Is Unit Converter free?

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

### Do K or Unit Converter have ads?

Neither K nor Unit Converter shows ads.

### Which is updated more often, K or Unit Converter?

K ships an update every 3 weeks, and Unit Converter every 2 weeks. Most recently, K was updated on October 4, 2026 and Unit Converter on October 11, 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.*