# Unit Converter vs Keypop

The clearest difference is ads: Unit Converter at none against Keypop's shown. Unit Converter also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.4). Keypop's advantage is update cadence (daily vs every 2 weeks). On price and in-app purchases there is nothing between them.

Both are free to download. Unit Converter sells 1 one-off in-app purchase and Keypop sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Unit Converter ships an update every 2 weeks, Keypop daily. The most recent releases landed on November 9, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Unit Converter | Keypop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Daily** |
| Size | 29 MB | 99 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [伟鹏 李](https://appshunter.io/developer/1817642925) | [DAE HYUN KIM](https://appshunter.io/developer/6785347936) |

## What reviewers say

### 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 |


### Keypop

[App page](https://appshunter.io/ios/app/keypop-keycap-keyboard-themes/id6822638064)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keypop Plus Monthly | $1.99 | per month |
| Keypop Plus Yearly | $11.99 | per year |
| Keypop Plus Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Unit Converter free?

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

### Is Keypop free?

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

### Do Unit Converter or Keypop have ads?

Keypop shows ads; Unit Converter does not.

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

Unit Converter ships an update every 2 weeks, and Keypop daily. Most recently, Unit Converter was updated on November 9, 2026 and Keypop on November 6, 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.*