Comparison

Uuu vs Tire Calculator (Offset&Speed)

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Uuu

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
Read full description

日本のパトロールカーのサイレンアプリ「Uuu」です。 ※※※必ずお読み下さい※※※ 日本特殊車両サイレンアプリ 緊急車サイレンの姉妹アプリです。類似アプリにつき、ご購入の際は、間違えないようご注意下さい。 サイレンアンプ機能は付いておりません。よって、手動や周波数が下がっていき消音する機能は搭載しておりません。 録音したサイレンや音声を再生しているだけで、サイレンアンプの機能を再現しているものではありません。 収録音 ・ウー4秒周期自動(約1分) ・ウー4秒周期自動(約1分) ・パトカーの音声4種類(1ch-4ch) 録音機能 5chに好きな音声を録音できます。 録音した音声は、繰り返し再生できます。 警光燈機能 画面の上下が、ランダムフォーに似たパターンで点滅します。 【音声録音方法】 音声合成ボタンをタップし、右下の数字を5にします。 数字が5の時、音声CHボタンをロングタップすると録音確認メッセージが表示されるので、OKをタップすると録音を開始します。 録音のを止めるには、停止ボタンをタップします。 動作・サイレンをYoutubeで確認できます。 https://youtu.be/83OEYP9vbUU

About

Tire Calculator (Offset&Speed)

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
Read full description

Easily calculate the effects of wheel and tire size changes A convenient calculation tool for anyone considering wheel upgrades, tire size changes, or fitment adjustments. Simply enter your current and new specifications to quickly compare the impact on your vehicle. -Main Features -Wheel Comparison •Calculate inner rim position changes •Calculate outer rim position changes •Calculate tread width changes -Tire Comparison •Calculate speedometer error (%) •Compare indicated speed and actual speed •Vehicle-specific speedometer error can also be included in calculations -Speedometer Error Measurement •Accurate GPS-based speed measurement -Data Storage •Save comparison records -Important Notes Measurement results may vary depending on GPS reception and environmental conditions. Use measured values as a reference only. Actual wheel and tire dimensions may vary by manufacturer and model. Calculation results are for reference purposes only. Always consult a qualified professional before making vehicle modifications. The developer assumes no responsibility for any damages or issues resulting from the use of this application. -Specifications Wheel Offset Calculator •Rim Width (in): 3" to 16" (supports 0.25" increments) •Offset (mm): -60 to +70 •Backspacing (in): 3" to 13" Speedometer Error Calculator •Tire Width (mm): 125 to 405 •Aspect Ratio (%): 20 to 90, including 82 (R) •Supports 82-series radial tires commonly used on vans and light trucks •Rim Diameter (in): 10 to 32 •Direct Tire Diameter Input: 100 to 1500 mm or 4 to 60 in •Vehicle Speedometer Error Correction (%): -20 to +20 Speedometer Error Measurement •Measurable speed range: 10 to 200 km/h or 10 to 200 mph

Screenshots

Uuu2 screens
Tire Calculator (Offset&Speed)3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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

Scorecard3 real differences · 7 level
Uuu versus Tire Calculator (Offset&Speed): the parameters behind the verdict, then further details
ParameterUuuTire Calculator (Offset&Speed)
Price$1.99$1.99
Rating—5.0 (3 ratings) — better
Positive reviews0.0% of reviews85.7% of reviews — better
Number of ratings—3 — better
Update frequencyEvery 95 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better26.0
Further details — not scored
Size24 MB9 MB
Age rating4+4+
DeveloperKaji TakatsuguSatoshi Mori

Customer experience

Uuu

Written reviews10 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Tire Calculator (Offset&Speed)

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

In-app purchases

None

Uuu

No in-app purchases

None

Tire Calculator (Offset&Speed)

No in-app purchases

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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