How To: This Innocent Calculator Is Really a Secret App Safe for Android

This Innocent Calculator Is Really a Secret App Safe for Android

Trust can be a touchy subject in general, and is often required when sharing personal information—especially so when handing our phones over to others. You may not have a ton of secret or nefarious information on your device, but that doesn't mean you want your mom or snoopy coworker having easy access to your messages or Facebook app.

Locking applications can help, but then you're left explaining to someone why your Gmail or Instagram apps are locked, and if it's a significant other, well, now you've got some explaining to do.

Instead of locking apps, simply hide them so the conversation never takes place. The best way I've found to do that is by hiding them in an innocent-looking app, and what could be more innocent than a calculator?

Note that the hiding function is accomplished by "freezing" apps, which essentially removes them from your visible app list while not actually removing them from your device. The process of freezing requires deep system access, and for that reason, your Android device must be rooted.

Step 1: Install Smart Hide Calculator

Developer Inderdeep Singh, known as IDSstudio in the Android world, created a fully functional calculator that's really an app hider called Smart Hide Calculator, which can be downloaded for free from the Google Play Store.

Step 2: Set Your Passcode

The first time you open Smart Hide Calculator, you'll notice it says Set Password up top. Enter a passcode, then hit the equals sign (=) and confirm it. After setting your passcode, you'll be prompted to create a backup code, just in case.

Forgot Your Passcode?

If you ever forget your passcode, enter the password recovery mode by entering 123456789+987654321 in the calculator, followed by the equals sign (=).

Step 3: Start Hiding Apps

To hide apps, just select the Freeze Apps option, then select apps from a list of the ones you have installed. They will disappear from your app drawer and appear as if they're no longer installed. Be aware that any locked-apps will still show as shortcuts on your home screen, although they will not be accessible (showing an "App Not Installed" message).

When you're ready to use your hidden apps again, simply enter your passcode and select "Un-Freeze Apps."

Note About Hiding Files

You can also hide files, though, many have stated that using this function actually deleted the files off their system, or made them very difficult to find and/or get back. If you decide to go this route, be aware of the issues others have run in to. Personally, I only use this app only for hiding apps.

All in all, Smart Hide Calculator does the job to hide apps you don't want others to have free access to. Let us know what you think in the comments below as well as on our Facebook and Twitter feeds.

Just updated your iPhone? You'll find new features for Podcasts, News, Books, and TV, as well as important security improvements and fresh wallpapers. Find out what's new and changed on your iPhone with the iOS 17.5 update.


I set my password for 0.0.0 and then I couldn't type that number on the calculator and now I think I lost all the APS that where inside that calculator. I'm so frustrated!

Have you tried entering 123456789+987654321?

hi i have lost password for the app KYCALC i have tried 123456789+987654321= but didnt work can any one help me please

i lost my all picss please help me i m so frustrated :'( i unhide my pics it says null my 456 photos are lost plz help me what can i do?????

anyone there plz for godsake help me.... :'(

Alisha what this app actually does is rename your pics to an extension which is unidentifiable to Android. You can get back your pics by simply renaming them again to . jpg file.

I can help you with that

Please help forgot passcode have precious stuff in there. I've tried the reset it didn't work!!!!

It won't give me my photos back and I have no idea what to do. My pictures are all gone. What do I do to get them back I tried to place it in another file name but it just keeps giving me the same one.

What do I do if I can't remember my secondary password?

I have used 11223344= it works for me !! Hope it works for you, too !!

Hello I downloaded the Smart Hide Calculator and it hid my pictures but i can not access them. Please help me I really need my pictures. What do I do?

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