Just opened a secure message someone sent you? That was Quick Send — encrypted, viewable once, then gone. See how it works

Verify who. Encrypt what.

Prove it's really them and talk in a Verified Session — or send a one-time link that needs no account and disappears after a single view. Either way, the server never sees what you sent.

  • No phone number required
  • End-to-end encrypted
  • Nothing lingers
Get SimplyAuth — Free See how it works

No card required · 30-day full trial

Useful from your first minute — Quick Send works even if no one you know has the app.

Two ways to share what you'd never text.

Pick the one that fits who's on the other end.

Verified Sessions

For people you know

Prove it's really them with a 60-second phrase, then talk in a room that wipes itself on both phones when it closes.

  • Identity verified before the room opens
  • Two-way conversation, both sides confirmed
  • Auto-wipes on both phones when it closes
See a Verified Session →
Quick Send

For anyone, right now

No account or app needed to receive. Encrypt a secret, get a link, send it your way — it opens once, then it's gone for good.

  • End-to-end encrypted — we never see the secret
  • Opens once, on any device — no second view, ever
  • Recipient needs no account, no install
See Quick Send →

You shouldn't be doing this.

Most "secure" sharing still happens in iMessage, email, or a sticky note. SimplyAuth is for the ten seconds when it actually matters.

Today, in iMessage
Hey it's Mom — what's the Netflix password again?
it's Hunter2-Spring
  • Stored on Apple's servers and your iCloud backup, indefinitely
  • You can't actually tell it's Mom
  • Lives in a thread you'll never clean up
With SimplyAuth
🔒 Verified Session · wipes in 14:32
Netflix password: ••••••••••
  • Server stores ciphertext only — never the keys
  • Verified pairing required before the room opens
  • Auto-wipes on both phones when the session closes

Verified Sessions: built for one sensitive exchange

Open a room. Share the thing. Walk away clean.

The family password

Your dad needs the Netflix password (again). Verify him in ten seconds, drop the password in a Session, close it. The thread never existed.

The wire transfer detail

Your accountant needs the new bank account number — and wire fraud is exactly why this exists. Verify each other first, share the detail in a Session, done.

The sensitive reference

A verified source sends a journalist a tip-line reference. No phone numbers exchanged, no group to be added to, and the room wipes from both phones when it closes.

Per-session encryption keys generated on your device · Server stores ciphertext only · 20-minute cap · 30-message limit · Screenshot blocked on Android, detected on iOS · Auto-wipes on both phones when the session closes

Quick Send: one link, one view, gone

No connection required. Encrypt it, send the link over any app you already use, and it disappears after one open.

The Wi-Fi password

A guest is at the door and doesn't have the app. Send the Wi-Fi password as a Quick Send link — they open it once, it's gone, and it was never sitting in a text thread.

The gate code

Your dog walker needs the gate code for one visit. Send a link that opens once and expires — no standing access, no code left behind in old messages.

The one-time reference

Someone outside SimplyAuth needs a confidential detail just once — a case number, a reference code. They don't need the app or an account to see it.

End-to-end encrypted, server never sees the secret · Opens once, then it's unrecoverable · Recipient needs no account or install · You choose the reveal window: 1, 5, or 15 minutes · Unopened links expire in 24 hours

Quick Send trades verification for reach: the link is the key, and the channel you send it over is the identity check — same as handing someone a physical key. For proving it's really them first, that's what Verified Sessions are for.

How Verified Sessions work

Four steps: verify who you're talking to, then share it securely

1

Add a Connection

Share an invite code or scan a QR code to link with someone you trust. It takes seconds.

2

In a moment that matters

On a call, or before acting on a request — tap "Verify" on your connection's card. A unique, time-limited phrase appears on both phones simultaneously.

3

Read the phrase aloud

If what they read matches your screen, it's really them. If not, hang up immediately.

4

Open a Session

Verified? Now share the password, SSN, or document in an end-to-end encrypted room. It wipes itself in 20 minutes or 30 messages — whichever comes first.

How Quick Send works

Two steps in the app, then it opens anywhere — no install required.

1

Write it in the app

Type the secret, pick how long it stays visible after it's opened — 1, 5, or 15 minutes — and tap Encrypt & get link. This is the real compose screen, not a mockup.

2

Send it over any app

SimplyAuth hands off to your phone's own share sheet — Messages, Mail, WhatsApp, whatever you'd already use. The link works once and expires in 24 hours; the channel you send it over is the identity check.

3

They open it in a browser — no app needed

This is the real page at simplyauth.app/s/. Nothing happens until they tap Reveal — the decryption key lives only in the link itself and is never sent to our servers.

Not another messenger.

Signal and Telegram are general-purpose. SimplyAuth is built for the moment you have to share something you'd never want to leave behind.

DimensionSimplyAuthSignalTelegram
Identity modelVerified pairing requiredPhone numberPhone number
Default encryptionAlways-on for SessionsAlways-onOpt-in (Secret Chats)
Groups1:1 onlyYesYes (large)
Built forOne sensitive exchangeOngoing private chatMessaging + channels
Server storesCiphertext onlyCiphertext onlyPlaintext (regular chats)
Phone numberNot requiredRequiredRequired

Signal's cryptography is excellent — better than ours, frankly. We're not trying to out-encrypt them. SimplyAuth is identity-first; Signal is encryption-first. Different shape of tool, similar floor of security.

Also included

Built-in safety, too

Going somewhere alone? Set a check-in timer. If you don't tap "I'm OK" before it expires, your trusted connections get an automatic alert — and a silent SOS can send a distress signal to everyone you've verified, in one tap.

  • Preset or custom durations up to 24 hours
  • Add an optional note for context
  • Choose which connections get alerted
  • Extend by 30 minutes if you need more time
  • Includes silent distress alerts — send an SOS to all connections in one tap

Server-blind by design

The server stores ciphertext and signatures only. The keys to decrypt your Sessions never leave your device.

No phone number, ever

Pairing happens through a verified invite. You're not enumerable, not spammable, and not in anyone's contact-discovery graph.

No groups, no wrong room

SimplyAuth is 1:1 by design. There's no group to be added to, so the "wrong person in the room" failure can't happen.

We retain connection metadata — who paired with whom, and when sessions happened — so the app works. Content is server-blind; metadata is not, and we tell you exactly what we keep on our privacy page.

Free to receive. Pay to initiate.

Being brought into a session and verifying identity are free, forever. Go Personal to start your own sessions and invite new connections.

You pay to send. Everyone you send to uses it free, forever — recipients of Quick Sends don't even need the app.

Free

$0

No card. No expiry.

  • Receive a Verified Session & reply inside it
  • Accept a connection request
  • Verify someone's identity
  • Scheduled check-ins & silent distress alerts
Get it Free
30-day free trial

Personal

$0.99/mo

or $7.99/year  ·  save 33%

  • Everything in Free
  • Start your own Verified Sessions
  • Send connection requests
  • Refer friends for free months
Start 30-day trial

Missed the first 100 Founders? Use code EARLYBIRD in the app for lifetime free access — no subscription, ever. Limited spots.

Coming soon

Verified Business

Let's talk

  • A verified business identity for your team
  • Staff share one trusted, verified profile
  • Branded session links for client onboarding
  • Gated on SOC 2 / HIPAA readiness
Join the waitlist

Safety features — scheduled check-ins and silent distress alerts — and identity verification are free for everyone. They're never behind a paywall. If your Personal plan lapses, you simply drop back to Free — nothing is locked or deleted.

Get SimplyAuth

Available on iOS and Android. Start with a 30-day free trial — no card required. Safety check-ins and duress alerts are free forever, never paywalled.

Download on the App Store Get it on Google Play

Now available on iOS and Android

Available in 24 countries

SimplyAuth launches in English in the following markets. More countries coming as we add translations.

Not seeing your country? Let us know — we prioritize expansion based on demand.