SendBySound

SendBySound transforms your text into sound waves, letting you share messages with nearby devices using nothing but audio. No internet connection, no Bluetooth pairing, no accounts — just pure sound.

HOW IT WORKS

Type your message, tap Send, and your device plays an encoded audio signal. Any nearby device running SendBySound (or listening at SendBySound.com) can instantly decode and display your message. It's like a modern-day morse code, but automatic and instant.

PERFECT FOR

- Sharing Wi-Fi passwords, contact info, or quick notes
- Sending messages when internet is unavailable
- Transferring text between devices without pairing
- Tech demos and educational purposes
- Situations where privacy and offline capability matter

KEY FEATURES

◆ No Internet Required
Works completely offline. Your messages travel through sound, not servers.

◆ No Accounts or Sign-up
Open the app and start sending. No registration, no personal data collected.

◆ Cross-Platform Compatible
Send messages between iPhone, iPad, and any web browser at SendBySound.com.

◆ Private by Design
Messages are transmitted directly between devices via sound waves. Nothing is stored in the cloud.

◆ Multiple Sound Modes
Choose between audible tones or near-ultrasonic frequencies for quieter transmission.

◆ Simple & Fast
Just type, tap, and transmit. Receiving is equally easy — tap Listen and hold your device near the sender.

TIPS FOR BEST RESULTS

- Keep devices within a few feet of each other
- Minimize background noise for clearer transmission
- Use audible mode for maximum reliability
- Works great for messages up to 133 characters

Whether you're sharing a quick note in a meeting, sending info to a friend's phone, or just exploring a clever new way to communicate — SendBySound makes it simple, private, and fun.

Download now and experience the magic of data over sound! Show More