# Uuu vs 簡単

The clearest difference is price: 簡単 at Free against Uuu's $1.99. 簡単 also leads on update cadence (fortnightly vs every 95 months). Uuu's advantage is ads (none vs shown) and iOS requirement (12.0 vs 16.0). On in-app purchases and device support there is nothing between them.

簡単 is free to download; Uuu costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Uuu ships an update every 95 months, 簡単 fortnightly. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Uuu | 簡単 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 95 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 24 MB | 8 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kaji Takatsugu](https://appshunter.io/developer/465688467) | [Green Speed Inc.](https://appshunter.io/developer/1504671073) |

## What reviewers say

### Uuu

[App page](https://appshunter.io/ios/app/uuu/id1154032477)

This app simulates Japanese patrol car sirens and lights. It features pre-recorded siren sounds, the ability to record and play back custom audio, and a flashing light effect. It does not include a siren amplifier function.

**Highlights:** Pre-recorded siren sounds, Custom audio recording and playback, Flashing light effect, Simulates patrol car sirens, Record up to 5 channels of audio

**Features:** macOS Compatibility

**In-app purchases:** none


### 簡単

[App page](https://appshunter.io/ios/app/id6446190599)

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

**In-app purchases:** none


## Frequently asked questions

### Is Uuu free?

Uuu costs $1.99, with no in-app purchases.

### Is 簡単 free?

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

### Do Uuu or 簡単 have ads?

簡単 shows ads; Uuu does not.

### Which is updated more often, Uuu or 簡単?

Uuu ships an update every 95 months, and 簡単 fortnightly. Most recently, Uuu was updated on October 29, 2026 and 簡単 on October 30, 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.*