# Motorcycle Group Ride PTT App — No Intercom Needed | denntatsu

> An offline walkie talkie app for motorcycle group rides. Riders' phones connect directly — no server, no cell signal, no intercom hardware needed. Hands-free talk via Bluetooth headset. Free to try via QR code.

Canonical: https://denntatsu.com/touring/en/

## Getting everyone their own intercom is a hassle

Dedicated intercoms are the usual choice for group rides, but outfitting every rider is a real hurdle.
denntatsu connects riders' phones directly, with no server involved, using devices you already carry. It also works alongside intercoms for riders who already have them.

## What you can do with denntatsu

### Join a channel in seconds

Scan a QR code to connect offline. No server needed, works off-grid.

### Push-to-talk, like a walkie-talkie

Hold the button to talk, release to listen — or go hands-free with voice-activated transmission over a Bluetooth headset. Built for close-range, tight-knit groups.

### Voice and text, both ways to reach the group

Text chat works alongside voice — useful for coordinating meetup points and breaks.

## How it works

- 1 Connect before you set off While stopped, scan the host's QR code to join the channel.
- 2 Talk hands-free while riding Connect the speaker and microphone of a Bluetooth headset or intercom to talk with your group without using your hands.
- 3 Operate only while stopped Connecting and any screen or button operation should all be done while stopped.

Never operate the app by hand while riding. Talk hands-free on the move; operate only while stopped.

## What to know before you use it

- Delivery is best-effort. Range depends on surrounding buildings, terrain, and device hardware, and is not guaranteed.
- Only one person can talk at a time (half-duplex) — this is not an always-on, everyone-talks-at-once connection.
- Voice conversation is designed for close-range, tight-knit groups where riders are in direct radio range of each other. A widely spread-out line is not guaranteed to stay connected.
- Text chat, like voice, only reaches devices you're directly connected to.

## Frequently asked questions for riders

How far does it reach? +

Range depends on surrounding buildings, terrain, and device hardware. Open, line-of-sight areas tend to reach farther, but no specific distance is guaranteed.

Is it free to use? +

Yes, denntatsu is free to use. Normal-mode calls have a 30-minute session limit (removed with a day pass or monthly plan).
The disaster SOS feature is entirely free and unlimited (SOS is not a substitute for official emergency calls, and delivery is not guaranteed).

Do we all need dedicated intercoms? +

No — a smartphone is all you need to join. It also works alongside riders who already use intercoms. It's positioned as a no-hardware way to get started or complement existing intercoms, not a replacement for them.

Can I use it while riding? +

Yes — connect the speaker and microphone of a Bluetooth headset or intercom to talk hands-free while riding. Any screen or button operation must be done while stopped.
Note that local regulations may restrict earphone use while riding; we recommend single-ear or open-ear devices that let you hear your surroundings.

Does it work on mountain roads with no cell signal? +

Yes. Because it connects devices directly with no server involved, nearby riders can connect directly even where there's no cellular signal. Delivery is best-effort — range depends on surrounding buildings, terrain, and device hardware.

Can we keep talking if the group gets spread out? +

Voice conversation is designed for close-range, tight-knit groups where riders are in direct radio range of each other — reaching a widely spread-out line is not guaranteed. Also, only one person can talk at a time (half-duplex). Text chat likewise only reaches devices you're directly connected to.

## Get Started

denntatsu is available now for Android. Download it free on Google Play to get started.