Private. Secure. Hidden.
A fully functional calculator with a hidden encrypted vault for your private messages. Zero-knowledge encryption meets everyday utility.
theSHFT looks and works like an ordinary calculator. Your secrets are hidden in plain sight.
theSHFT is a fully functional calculator. Use it for everyday math — no one will suspect a thing.
Type your personal PIN on the calculator keypad and press equals. Only you know the combination.
Your encrypted messaging world opens. Send messages and photos with military-grade encryption.
Powerful privacy features hidden behind a simple calculator interface.
Every message encrypted with X3DH key exchange and Double Ratchet. Only you and the recipient can read them.
Set timers from 5 seconds to 24 hours. Messages auto-delete after being read, leaving zero trace.
Connect using only usernames. No email, phone number, or personal information required.
Screenshots and screen recording are blocked at the OS level. Your conversations stay private.
Share photos with the same encryption as messages. Media self-destructs with your timer settings.
Our servers only store encrypted data. We can never read your messages, even if compelled to.
Every messenger has encryption now. Here's what they don't have.
| Feature | Signal | Telegram | iMessage | theSHFT | |
|---|---|---|---|---|---|
| End-to-end encrypted | ~ | ||||
| No phone number required | |||||
| Hidden from home screen | |||||
| Disguised as another app | |||||
| Blocks screenshots | |||||
| Duress PIN (panic wipe) | |||||
| Remote wipe | |||||
| No metadata stored | ~ |
Built from the ground up to protect your privacy with multiple layers of defense.
An emergency PIN that instantly and silently wipes all data. Irreversible. For extreme situations.
One-tap permanent account deletion. Clears all local data and server records instantly.
Screenshots and screen recording are blocked at the system level. Conversations cannot be captured.
Our servers only store encrypted blobs. We cannot read your messages, see your contacts, or access your content.
Secure 12-word recovery phrase stored only on your device. The only way to restore your account.
Lost your device? Trigger a remote wipe to destroy all data before anyone can access it.
Our entire encryption library is open source. Inspect the code, verify our claims, and see exactly how your messages are protected.
Built on proven cryptographic primitives. No proprietary algorithms. No security through obscurity.
Asynchronous key agreement protocol. Establishes a shared secret between two parties even when one is offline. Uses identity keys, signed pre-keys, and one-time pre-keys to prevent replay attacks.
Every message encrypted with a unique key derived from a continuously evolving chain. Compromise of a single key cannot decrypt past or future messages. Same protocol used by Signal.
All local data encrypted with keys derived from your PIN. On iOS, key material is stored in the Secure Enclave and never leaves the device. Database encryption at the field level, not just disk encryption.
Message created on your device
AES-256-GCM with unique ratchet key
Encrypted blob over TLS 1.3
Decrypted only on recipient's device
Keys deleted after read, message self-destructs
All local data encrypted with AES-256-GCM. Keys stored in iOS Secure Enclave. Never included in iCloud backups.
We don't collect what we don't need. Your data belongs to you.
No IDFA, no cross-app tracking. Fully compliant with App Tracking Transparency.
Create an account with just a username. No personal information needed.
We never ask for or collect your physical location information.
We never access your phone's address book or contact list.
Start free or unlock the full power of theSHFT with Pro.
| Feature | Free | Pro |
|---|---|---|
| Daily Messages | 10 | Unlimited |
| Daily Photos | 1 | Unlimited |
| Contacts | 2 | Unlimited |
| Message Timers | Up to 1 minute | Up to 24 hours |
| Duress PIN | ||
| Remote Wipe | ||
| Panic Wipe |
Everything you need to know about theSHFT.
Enter your secret PIN on the calculator keypad and press the equals button. You set your PIN during account creation.
If you saved your 12-word recovery phrase, you can restore your account and set a new PIN. If you've lost both your PIN and recovery phrase, your data cannot be recovered. This is by design for maximum security.
No. All messages are end-to-end encrypted on your device before transmission. Only you and your recipient have the keys. We cannot read your messages even if we wanted to.
A Duress PIN is an emergency feature. When entered, it silently and instantly wipes all data from the app. This is irreversible and designed for extreme situations where you need to protect your privacy immediately.
Set a timer per conversation from 5 seconds to 24 hours. After a message is read, it automatically deletes when the timer expires. Deleted messages cannot be recovered.
Screenshot blocking is a core security feature. It ensures that private conversations cannot be captured and shared. This feature cannot be disabled.
Tap the plus button and enter your contact's exact username. Both users must add each other before messaging begins.
Go to Settings on your iPhone, tap your Apple ID, then Subscriptions, find theSHFT, and tap Cancel. Pro features remain active until the end of your billing period.
Understanding the threats your current messenger won't tell you about.
Every app has encryption now. So why aren't we actually private? The answer lies in what encryption doesn't protect.
When you delete a message on iMessage, WhatsApp, or Snapchat, it doesn't actually disappear. Here's where it really goes.
Download theSHFT and take control of your private communications.
Download on the App Store