# Smrtome Bell vs KKM UWB

The clearest difference is update cadence: KKM UWB at every 5 weeks against Smrtome Bell's every 8 months. Smrtome Bell's advantage is device support (3 vs 1) and iOS requirement (9.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Smrtome Bell ships an update every 8 months, KKM UWB every 5 weeks. The most recent releases landed on November 11, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Smrtome Bell | KKM UWB |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 weeks** |
| Size | 48 MB | 5 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [孟初 禹](https://appshunter.io/developer/964160207) | [KKM Co.,Ltd.](https://appshunter.io/developer/1009170317) |

## What reviewers say

### Smrtome Bell

[App page](https://appshunter.io/ios/app/smrtome-bell/id1387379363)

**Features:** macOS Compatibility

**In-app purchases:** none


### KKM UWB

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Smrtome Bell free?

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

### Is KKM UWB free?

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

### Do Smrtome Bell or KKM UWB have ads?

Neither Smrtome Bell nor KKM UWB shows ads.

### Which is updated more often, Smrtome Bell or KKM UWB?

Smrtome Bell ships an update every 8 months, and KKM UWB every 5 weeks. Most recently, Smrtome Bell was updated on November 11, 2026 and KKM UWB on November 4, 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.*