# KKM UWB vs Coaster Tool

The clearest difference is in-app purchases: KKM UWB at none against Coaster Tool's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Coaster Tool sells 2 one-off in-app purchases. KKM UWB asks for nothing beyond the download.

KKM UWB ships an update every 5 weeks, Coaster Tool every 4 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | KKM UWB | Coaster Tool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 weeks** |
| Size | 5 MB | 9 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [KKM Co.,Ltd.](https://appshunter.io/developer/1009170317) | [YangYuXuan Xiao](https://appshunter.io/developer/1213787716) |

## What reviewers say

### KKM UWB

[App page](https://appshunter.io/ios/app/kkm-uwb/id6475756984)

**Features:** macOS Compatibility

**In-app purchases:** none


### Coaster Tool

[App page](https://appshunter.io/ios/app/coaster-tool/id6809840083)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 recordings | $0.99 | one-time |
| Unlimited recordings | $9.99 | one-time |


## Frequently asked questions

### Is KKM UWB free?

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

### Is Coaster Tool free?

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

### Do KKM UWB or Coaster Tool have ads?

Neither KKM UWB nor Coaster Tool shows ads.

### Which is updated more often, KKM UWB or Coaster Tool?

KKM UWB ships an update every 5 weeks, and Coaster Tool every 4 weeks. Most recently, KKM UWB was updated on October 24, 2026 and Coaster Tool on October 24, 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.*