Channel secured
Your voice.
Nobody else's
business.
Secure Line is a push-to-talk walkie-talkie for teams who can't be overheard. Encrypted channels, instant voice, zero recordings.
AES-256 · Curve25519 · No audio retention
Channel
Nightshift-07
- Dispatchtransmitting
- Unit 4listening
- Unit 9listening
Built like a radio, sealed like a vault
All the immediacy of a walkie-talkie with cryptography that holds up under scrutiny.
End-to-end encrypted
Every transmission is sealed on your device and opened only on the handsets tuned to your channel.
Instant push-to-talk
Hold the key, speak, release. Sub-second delivery over cellular, Wi-Fi, or degraded networks.
Private channels
Spin up a channel for a crew, a shift, or a single operation. Invite by code, revoke in one tap.
Nothing stored
Audio is never written to our servers. No transcripts, no archives, no metadata trail to subpoena.
Verified identities
Device keys are pinned and fingerprinted so you always know who is on the other end of the line.
Works off-grid
Low-bandwidth codec keeps channels alive on 2 bars, in basements, and on the far edge of the site.
On air in three steps
Create a channel
Name it, set who can talk, generate a one-time join code.
Bring your crew
Members join with the code — keys exchange automatically.
Press and speak
Live voice to everyone tuned in. Nothing recorded, ever.
Pay per operator
Start with a 3-day free trial. After that, the admin is billed monthly for every person they add to the group — $20 per person for the first 15, $25 per person for everyone after that.
Free trial
$0
3 days, full access
- Every feature unlocked for 72 hours
- Add your crew and test live channels
- Cancel before day 3 and pay nothing
Standard seats
$20 /person /mo
First 15 people in the group
- Billed to the admin's card on the last day of the month
- Charged only for people the admin actually adds
- Encrypted channels, unlimited talk time
Scaled seats
$25 /person /mo
Person 16 and beyond
- Once the group hits 15, new seats bill at $25
- The first 15 seats stay at $20
- One combined monthly charge
Estimate your month
Drag to set how many people the admin has added.
$300
charged at month end
People
15
15 × $20
$300
0 × $25
$0
200 seats for $4,500
Every 3 months, on the 1st of the month, admins can add up to 200 people to their group for a flat $4,500. The offer is live for that single day only — after that month, seat pricing returns to $20 / $25 per person.
Security you can audit
Keys are generated on-device and never leave it. Our relays move opaque packets they cannot read, and drop them the moment they're delivered.
- 256-bit
- Per-channel session keys
- 0
- Seconds of audio retained
- <300ms
- Median transmit latency
- 100%
- On-device key generation
Open your first channel
Start with a 3-day free trial. No phone number required.
Get Secure Line