# PiPO vs Plus

The clearest difference is update cadence: Plus at every 9 days against PiPO's every 14 months. Plus also leads on review sentiment (100% vs 71%) and price ($0.49 vs $2.99). PiPO's advantage is iOS requirement (7.1 vs 15.6). On ads, in-app purchases, monetization model and device support there is nothing between them.

PiPO costs $2.99 and Plus $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.

PiPO ships an update every 14 months, Plus every 9 days. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | PiPO | Plus |
| --- | --- | --- |
| Price | $2.99 | **$0.49** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pipo/id983719927/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 71.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 9 days** |
| Monetization | Paid | Paid |
| Size | 39 MB | 18 MB |
| Requires iOS | **7.1** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kaji Takatsugu](https://appshunter.io/developer/465688467) | [Hidenori Nakashima](https://appshunter.io/developer/1566865415) |

## What reviewers say

### PiPO

[App page](https://appshunter.io/ios/app/pipo/id983719927)

This app simulates Japanese ambulance sirens and emergency vehicle sounds. It features recorded siren sounds, voice recordings, and a flashing light effect. It is not a real siren amplifier but a sound playback application.

**Highlights:** Ambulance siren sounds, Emergency vehicle voice recordings, Record and playback custom audio, Flashing light effect, Automatic siren function

**Features:** macOS Compatibility

**In-app purchases:** none


### Plus

[App page](https://appshunter.io/ios/app/plus-sizing-tire-pressure-pro/id1566865413)

This app helps you determine the correct tire pressure for your vehicle based on various international standards. It supports multiple pressure units and highlights the benefits of proper inflation for performance, safety, and fuel efficiency.

**Highlights:** Selectable tire standards (XL, RFD, ETRTO, TRA, JATMA), Switchable pressure units (kPa, bar, kg/cm2, psi), Benefits of correct tire pressure explained, Guidance on checking tire pressure frequency, Supports iPhone and iPad

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

**In-app purchases:** none


## Frequently asked questions

### Is PiPO free?

PiPO costs $2.99, with no in-app purchases.

### Is Plus free?

Plus costs $0.49, with no in-app purchases.

### Do PiPO or Plus have ads?

Neither PiPO nor Plus shows ads.

### Which is updated more often, PiPO or Plus?

PiPO ships an update every 14 months, and Plus every 9 days. Most recently, PiPO was updated on October 12, 2026 and Plus on October 10, 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.*