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.