# TonTsu — Morse with light & sound

> Morse with light & sound (iPhone/iPad app by hayato hagari.)

- Source: https://appshunter.io/ios/app/tontsu/id6794265105 (this page in markdown: same URL + `.md`)
- Developer: [hayato hagari](https://appshunter.io/developer/6794265107)
- Category: Utilities, Entertainment
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English, Japanese
- Released: 2026-07-27
- Data updated: 2026-10-08

## What is TonTsu?

TonTsu is a Morse code communication app that works where there's no signal — camping, hiking, festivals, emergency preparedness, or just secret messages with friends.

■ Send with light
- Your message becomes flashlight blinks in Morse code
- One-tap SOS that repeats until you stop it
- Kana and kanji are romanized automatically; Japanese Wabun code supported
- Save frequent messages as presets for one-tap sending

■ Read light
- The camera decodes blinking lights into text in real time
- A thermal-style view makes light sources pop
- International / Wabun auto-detection, with kana readings for romaji
- 1×/2×/5× zoom catches distant lights

■ Morse by sound (Pro)
- Generate Morse audio from text and play it back
- Save and share as an audio file (m4a)
- Decode Morse tones around you with the microphone — any pitch works

■ Learn the code
- Charts for A–Z, Japanese kana, and numbers & symbols
- Tap any character to hear its rhythm
- Three sending speeds: slow, normal, fast

■ Fully offline
Everything happens on your device. No account, no data collection, no network.

--------------------------------
TonTsu Pro (one-time purchase)
- Morse by sound (generate / save / share / mic decoding)
- Color themes (night-vision red & green, and more)
- Preset limit raised from 1 to 20
--------------------------------

Note:
- This app is not a substitute for official emergency services.
- Contains flashing-light effects. Take care if you are sensitive to flashing lights.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| TonTsu Pro | $2.99 | one-time |


## Is TonTsu safe?

Not enough ratings yet to assess TonTsu.

## Is TonTsu legit?

TonTsu has limited verification signals. The AppsHunter Legitimacy Score for TonTsu is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-07-28

No release notes.

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## More apps by hayato hagari

- [Munyunyu: 3D Squishy Toy](https://appshunter.io/ios/app/munyunyu-3d-squishy-toy/id6801844009)

All apps by hayato hagari: https://appshunter.io/developer/6794265107

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-08.*