Say it once.
Only they hear it.
SecureTalk is an instant push-to-talk app for crews, teams and friends. Every channel and direct call is end-to-end encrypted — keys are generated on your phone and never touch our server, even in theory. Hosted in the EU, built for people who'd rather not hand a conversation to an ad platform.
Direct .apk install, ~85 MB — not on Google Play. Android 7.0+, 64-bit. Android will ask you to confirm installing from a new source; that's expected. Why, and is it safe?
Everything a walkie-talkie should be — plus the parts most apps skip.
Press, talk, release
One button. Floor control makes sure only one person holds the channel at a time — no talking over each other.
Direct calls, end-to-end
Call someone one-to-one and the audio key is generated on-device and exchanged with authenticated X25519. We can't decrypt it — not even under a subpoena.
Channels for crews
Public, private, or invite-only, and end-to-end encrypted like everything else here. Owners and admins can mute or remove someone without deleting the whole channel.
Runs in the background
Keep listening with the screen off. Tuned mono Opus audio keeps battery draw low over a full shift.
Presence & push
See who's actually on a channel right now, and get pinged the moment someone keys up while you're away.
Safety numbers
Verify a contact's key once, in person, and SecureTalk warns you if the key it's handed you for them ever changes.
Four steps, no channel setup guide required.
Create an account
Email or phone, a password, done. No profiling questionnaire.
Join or start a channel
Pick public, private, or invite-only, and add the people who need it.
Hold to talk
Press the button, speak, let go. Everyone else on the channel hears it live.
Or call someone directly
One-to-one calls get their own end-to-end encrypted line, key exchanged device-to-device.
What's actually encrypted — layer by layer, no hand-waving.
Most apps say "encrypted" and leave it there. Here's exactly what that means for each part of SecureTalk, today.
| Layer | Status | Detail |
|---|---|---|
| Direct call audio | End-to-end | AES-256-GCM on the audio itself. The call key is generated on your device and never sent to us in a form we could read. |
| Direct call key exchange | Authenticated | X25519 Diffie-Hellman, X3DH-style, tied to both accounts' long-term identity keys — not just a fresh key a server could swap in transit. |
| Safety number check | Opt-in, verifiable | Compare a 30-digit fingerprint with a contact once, in person, and get warned if their key ever changes afterward. |
| Channel (group) audio | End-to-end | The speaker generates the key on-device and wraps it individually for every listener over an authenticated X25519 session (sender-keys style, like Signal groups) — our relay only ever forwards ciphertext it can't read. A key rotates immediately whenever someone leaves. |
| Network transport | TLS | Every connection to securetalk.eu is encrypted in transit, separate from the application-layer encryption above. |
| Passwords | Hashed | bcrypt. We don't store, and can't recover, your plain-text password — ever. |
Every audio layer above is now genuinely end-to-end, channels and direct calls alike. What we haven't done yet: an independent security audit, and account lockout / 2FA on login — both on the roadmap, not being quietly skipped. This table gets updated the day either changes.
One free channel for everyone. One plan if you need more.
No ad-supported tier, ever — that's the whole point. Premium funds the servers directly instead of your attention.
Free
Real-time push-to-talk, for as long as you want it.
No card required.
- Unlimited push-to-talk channels, end-to-end encrypted
- Direct calls, end-to-end encrypted
- Presence & push notifications
- Safety-number verification
- Channels up to 10 people
Premium
For crews and teams that need a record of what was said.
Billed monthly. Cancel anytime.
- Everything in Free
- Channel recording, 30-day retention
- Advanced moderation & audit logs
- Channels up to 50 people
- Priority support
Before you install
Is SecureTalk really end-to-end encrypted?
Yes — both direct one-to-one calls and group channels. Every key is generated on your device; we never see one in a decryptable form. In a channel, the current speaker's key is wrapped individually for every listener before it ever leaves their phone, so our relay only ever forwards ciphertext. See the table above for the full layer-by-layer breakdown, not a marketing summary.
Why isn't it on Google Play?
We distribute the Android build directly so nothing about your install goes through a third-party store. Android will show a one-time prompt to allow installs from this source the first time — that's a normal Android safeguard, not a sign of anything wrong.
What data do you actually collect?
An email or phone number and a password to create your account, plus the minimum needed to run channels and calls (who's in a channel, who called whom, and when). No ad SDKs, no analytics resold to third parties. You can request an export or full deletion of your data at any time.
Is there an iOS version?
Not yet — SecureTalk is Android-first today. iOS is on the roadmap.
Can I cancel Premium whenever I want?
Yes — Premium is billed monthly or annually with no lock-in contract. Cancelling stops the next renewal; you keep access through the period you've already paid for.
Your next conversation doesn't need to be anyone else's data.
Free to install, free to use for real-time push-to-talk. Upgrade later if you need recordings.