# Uuu vs Tire Calculator (Offset&Speed)

The clearest difference is review sentiment: Tire Calculator (Offset&Speed) at 86% against Uuu's 0%. Tire Calculator (Offset&Speed) also leads on update cadence (every 4 months vs every 95 months). Uuu's advantage is iOS requirement (12.0 vs 26.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Uuu costs $1.99 and Tire Calculator (Offset&Speed) $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Uuu ships an update every 95 months, Tire Calculator (Offset&Speed) every 4 months. Both last shipped on November 11, 2026.

## The numbers

| Metric | Uuu | Tire Calculator (Offset&Speed) |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/tire-calculator-offset-and-speed/id1204309537/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 0.0% of reviews | **85.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 95 months | **Every 4 months** |
| Monetization | Paid | Paid |
| Size | 24 MB | 9 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kaji Takatsugu](https://appshunter.io/developer/465688467) | [Satoshi Mori](https://appshunter.io/developer/1204309536) |

## 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


### Tire Calculator (Offset&Speed)

[App page](https://appshunter.io/ios/app/tire-calculator-offset-and-speed/id1204309537)

Easily calculate wheel offset and speedometer errors after tire changes. This tool helps determine changes in rim position, tread width, and actual speed versus displayed speed. It also offers GPS-based speedometer error measurement.

**Highlights:** Wheel offset calculation, Speedometer error calculation, GPS speedometer error measurement, Rim position change calculation, Tread width change calculation, Actual speed vs. meter display

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Uuu free?

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

### Is Tire Calculator (Offset&Speed) free?

Tire Calculator (Offset&Speed) costs $1.99, with no in-app purchases.

### Do Uuu or Tire Calculator (Offset&Speed) have ads?

Neither Uuu nor Tire Calculator (Offset&Speed) shows ads.

### Which is updated more often, Uuu or Tire Calculator (Offset&Speed)?

Uuu ships an update every 95 months, and Tire Calculator (Offset&Speed) every 4 months. Most recently, Uuu was updated on November 11, 2026 and Tire Calculator (Offset&Speed) on November 11, 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.*