Calculator Pro+ - Private SMS

Contains adsIn-app purchases
4.2
4.11K reviews
500K+
Downloads
Content rating
Everyone
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About this app

Do you want a private messaging app that keeps your conversations safe? Need to hide SMS/MMS from prying eyes? Tired of spam cluttering your inbox? Then Calculator Pro+ is the perfect solution!

Calculator Pro+ is a secure and discreet SMS/MMS hider app that hides messages from specific contacts behind a fully functional calculator interface. No one will know it's a hidden text app!

Secure & Private Messaging

Hide messages and keep your private conversations completely secure.
Add any contact as a Private Contact to automatically move their messages inside the app.
Your hidden SMS/MMS remain protected with a password-protected calculator.

Spam SMS Blocker

Block spam SMS and filter messages.
Customize notifications with fake alerts to ensure complete privacy.

Free Private Texting

Enjoy free secure messaging with other Calculator Pro+ users.
Send unlimited texts, photos, audio and videos messages, and even share locations.

Emoji Support

Express your emotions with over 300 emojis and stickers.

More Features:

Secret calculator app with a hidden vault.
Private text app for secure chats.
Auto backup for all your messages.
No app icon visibility for extra privacy.
Auto-close feature for maximum security.

Note:
To enjoy all features, set AdvanceSMS as your default SMS app on Android 5 or higher.

Download Calculator Pro+ now to experience the best way to hide your messages and enjoy private texting!

For feedback or queries, contact us at info@privatesmsbox.com.
Updated on
Apr 20, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App info and performance
This app may collect these data types
Personal info, Contacts, and Device or other IDs
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.2
4.05K reviews
strong
January 9, 2022
*Do not use* I repeat, do not use this app. You will lose all your messages, images, everything, once you transfer the contact into their app. Then afterwards you will not have access to open the app because once you try to open it, it will only bring you to the "settings" the screen to put your code in is gone. Your only options will be to uninstall or force close. I pray I help someone with this. Biggest ####ING mistakes I've made !!!!!
209 people found this review helpful
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Private SMS Box
January 19, 2022
Dear User, To move message back to native messaging app, Open App - Press and hold on conversation or contact - Select "Move Messages Back to Native" It will give option to move all private messages back to native application. Please mail us at info@privatesmsbox.com if you have any query. Thanks
A Google user
March 18, 2019
It doesnt work like it should. All of a sudden, all my messages are going to my regular inbox and not the app. Ive emailed them numerous times and the problem remains. Its one problem after another with this app. UPDATE: They fixed the above problem. However, theres a new problem. Calls from my hidden contacts go to my regular call log. Also, IT RINGS. It rings twice, then stops. When I go to the call log, there's the name and phone number of my hidden contact, defeating the purpose of the app.
92 people found this review helpful
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Private SMS Box
March 12, 2019
Dear User, You need to install Advance SMS app and make it as default SMS application to hide native messages. Use it to send SMS for non private contacts. Please mail us at info@privatesmsbox.com if you have any query. Thanks
A Google user
July 1, 2019
Paid for the advanced version to get rid of adds, but nothing changed but my back account balance. What the heck!? Also, when trying to add my number to get unlimited free messages, the verification text never arrives, so I can't do it! App works well overall, but lost money and wasted time trying to very myself make it frustrating to use.
55 people found this review helpful
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Private SMS Box
July 11, 2019
Oh no! We sincerely apologize for the troubles you've had with the app. We'd be happy to take a look into this for you, please contact us at info@privatesmsbox.com. Thank you.

What’s new

We've given Calculator Pro+ a fresh new look!
- Clean and modern interface
- Find things faster
- Faster and smoother experience
- Send up to 5 photos at once!
- Improved video compression
- Various UI improvements
Update now & enjoy the new look!