# PiPO vs Forethumb いろは

The clearest difference is review sentiment: PiPO at 71% against Forethumb いろは's 58%. PiPO also leads on update cadence (every 14 months vs every 31 months) and iOS requirement (7.1 vs 16.4). Forethumb いろは's advantage is price ($0.99 vs $2.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

PiPO costs $2.99 and Forethumb いろは $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PiPO ships an update every 14 months, Forethumb いろは every 31 months. The most recent releases landed on September 26, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | PiPO | Forethumb いろは |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pipo/id983719927/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **71.4% of reviews** | 58.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 14 months** | Every 31 months |
| Monetization | Paid | Paid |
| Size | 39 MB | 37 MB |
| Requires iOS | **7.1** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kaji Takatsugu](https://appshunter.io/developer/465688467) | [Takuto Nakamura](https://appshunter.io/developer/1203150472) |

## 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


### Forethumb いろは

[App page](https://appshunter.io/ios/app/forethumb/id1351876497)

This app enables Japanese Morse code input on your iOS device. Once you memorize the codes, you can type even with your eyes closed. It supports single-key or paddle input with audible feedback and customizable spacing.

**Highlights:** Japanese Morse code input, Single-key or paddle input, Audible Morse feedback, Customizable space intervals, Swipe gestures for delete/space

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PiPO free?

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

### Is Forethumb いろは free?

Forethumb いろは costs $0.99, with no in-app purchases.

### Do PiPO or Forethumb いろは have ads?

Neither PiPO nor Forethumb いろは shows ads.

### Which is updated more often, PiPO or Forethumb いろは?

PiPO ships an update every 14 months, and Forethumb いろは every 31 months. Most recently, PiPO was updated on September 26, 2026 and Forethumb いろは on September 17, 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.*