# Uuu vs NextNavi

The clearest difference is review sentiment: NextNavi at 55% against Uuu's 0%. NextNavi also leads on update cadence (every 5 days vs every 95 months). Uuu's advantage is price ($1.99 vs $3.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

Uuu costs $1.99 and NextNavi $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Uuu ships an update every 95 months, NextNavi every 5 days. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Uuu | NextNavi |
| --- | --- | --- |
| Price | **$1.99** | $3.99 |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/nextnavi/id6446080475/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 0.0% of reviews | **55.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 95 months | **Every 5 days** |
| Monetization | Paid | Paid |
| Size | 24 MB | 52 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Kaji Takatsugu](https://appshunter.io/developer/465688467) | [建玮 朱](https://appshunter.io/developer/1675815565) |

## 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


### NextNavi

[App page](https://appshunter.io/ios/app/nextnavi/id6446080475)

This utility app provides a dedicated browser for playing web-based games. It offers customization options for your screen and ensures a consistent landscape view for a desktop-like gaming experience.

**Highlights:** Dedicated browser for web games, Screen customization options, Always landscape desktop view, Optimized for browser gaming

**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 NextNavi free?

NextNavi costs $3.99, with no in-app purchases.

### Do Uuu or NextNavi have ads?

Neither Uuu nor NextNavi shows ads.

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

Uuu ships an update every 95 months, and NextNavi every 5 days. Most recently, Uuu was updated on October 15, 2026 and NextNavi on October 13, 2026.

---

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