# Uuu vs NFC出席簿

The clearest difference is price: NFC出席簿 at Free against Uuu's $1.99. NFC出席簿 also leads on update cadence (every 2 months vs every 95 months). Uuu's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

NFC出席簿 is free to download; Uuu costs $1.99 up front. NFC出席簿 sells 1 one-off in-app purchase. Uuu asks for nothing beyond the download.

Uuu ships an update every 95 months, NFC出席簿 every 2 months. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Uuu | NFC出席簿 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 95 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 24 MB | 11 MB |
| Requires iOS | **12.0** | 26.5 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kaji Takatsugu](https://appshunter.io/developer/465688467) | [KAZUTOSHI KINOSHITA](https://appshunter.io/developer/1148380017) |

## 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


### NFC出席簿

[App page](https://appshunter.io/ios/app/nfc/id1483922547)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| メール作成回数(120回分) | $0.99 | one-time |


## Frequently asked questions

### Is Uuu free?

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

### Is NFC出席簿 free?

NFC出席簿 is free to download, with in-app purchases available.

### Do Uuu or NFC出席簿 have ads?

NFC出席簿 shows ads; Uuu does not.

### Which is updated more often, Uuu or NFC出席簿?

Uuu ships an update every 95 months, and NFC出席簿 every 2 months. Most recently, Uuu was updated on September 22, 2026 and NFC出席簿 on September 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*