Your Privacy
Hidden in Plain Sight
A real calculator with more inside. Hold the "=" button to unlock private messaging where voice notes and photos vanish after being opened.
Your Journey
From calculator to private messaging in seconds
Open CalculX
It looks like a normal calculator
Sign In Securely
Use Apple, Google, or email
CalculX
Secure MessagingEmma
Hey! How are you?
Alex
See you tomorrow!
Your Dashboard
All your private rooms in one place
Emma
OnlineChat Privately
Messages that disappear
✨ Full Messaging Experience
Everything you need for private conversations
Text Messages
Real-time messaging with read receipts. Know when your messages are delivered and read.
Voice Messages
Record voice notes that disappear after listening. Once played, they're gone forever.
Photo Sharing
Share photos that vanish after viewing. Your moments stay private and temporary.
Online Status
See when your contacts are online and available to chat in real-time.
Notification Control
Toggle notifications ON or OFF anytime. Stay in complete control of your alerts.
Delete All
Panic button: instantly erase all your conversations with a single tap.
Messages That Disappear
Privacy isn't just a feature—it's the foundation. Every message type has built-in expiration for your protection.
- ✓Voice messages disappear after listening
- ✓Photos vanish after viewing
- ✓All messages auto-delete after 24 hours
- ✓No message history stored on servers
Alex
Online🔗 Create & Join a Room
Connect with friends in 4 simple steps
Create a Room
Tap "New Chat" and choose a name
Get Your Code
Copy or share with your friend
CalculX
Secure MessagingEmma
Hey! How are you?
Friend Joins
Enter the code and tap "Join"
CalculX
Secure MessagingFriends
Room created! 🎉
Emma
Hey! How are you?
Connected!
New room in your dashboard
🛡️ Safety & Community
We're committed to providing a safe experience for everyone
24h Auto-Delete
All messages automatically disappear after 24 hours. Your conversations don't stick around.
Report System
Flag inappropriate content, harassment, spam, or suspicious behavior directly in the app.
Age Required
CalculX messaging is designed for users 17 years and older. We take this seriously.
💎 Simple Pricing
Start free, upgrade when you need more
Starter
- ✓1 chat room
- ✓Text, voice & photos
- ✓Ephemeral messages
- ✓24h auto-delete
- ✓Report system
Unlimited
- ✓Unlimited chat rooms
- ✓All free features included
- ✓Priority support
- ✓Support the developer
- ✓Early access to new features
🔒 Your Privacy Matters
Built from the ground up with security in mind
Hidden in Plain Sight
To everyone else, it's just a calculator. Your privacy stays protected.
Secure Login
Sign in with Apple or Google for maximum account security.
Auto Calculator Mode
Close the app and it returns to calculator mode instantly.
No Data Selling
We never track, store, or sell your personal data. Ever.
Questions & Answers
Everything you need to know
?Does the calculator actually work?
Yes! CalculX is a fully functional calculator. You can perform all normal calculations. The private messaging feature is completely hidden unless you know how to access it.
?Are voice messages and photos really ephemeral?
Yes! Voice messages disappear immediately after listening. Photos vanish after viewing. They cannot be recovered—even by us. Plus, all messages auto-delete after 24 hours.
?Is CalculX free to use?
Yes! The free plan includes 1 chat room with all features (text, voice, photos, ephemeral messages). Upgrade to Premium for unlimited rooms at $4.99/month or $24.99/year.
?How do I report inappropriate behavior?
Tap the ••• menu in any chat and select "Report". Choose a reason (inappropriate content, harassment, spam, suspicious behavior) and submit. We review all reports within 24 hours.
?What if someone sees me holding the = button?
Just release your finger! The app will simply show the calculation result. Nobody will know you were trying to access the messaging area.
?Can someone find my hidden messages?
No. When you close CalculX, it always opens back to the calculator screen. There's no indication that private messages exist inside the app.
Ready for True Privacy?
Download CalculX and keep your conversations truly private and ephemeral.
Download on theApp Store