Fake calculators are for the weak. Install the real hidden app, launched only by a secret code. Protect your privacy and data. Be invisible. Be stealthy. Be a pro.

No ads. No tracking. No logging. No data collection. Works offline.

WARNING: If you do not care about your privacy, you should not use this app.

This application was originally designed for specialists and those who work in highly sensitive environments, such as journalists, government officials, activists, privacy enthusiasts, secret service agents, and authorities.

No launcher icon, others do not even know you have this private gallery. That's why it is perfect for hiding your private photos, hidden videos, and other sensitive data in your secure media vault.

Only you can access the application and manage your hidden files by calling the application from your dial pad with your own Android secret code.

Just dial: *#*#CODE#*#* (where CODE is any series of numbers you set) from your default Phone application. This application will *magically* appear.

For your information, an Android secret code is a series of digits you can dial with your dial pad to access some hidden features of the phone (mostly for technical debugging purposes). These series, or codes, are usually set by the phone maker or the operator from the factory. They are fixed and can not be changed once the phone leaves the factory and goes to the consumers. One of the most popular codes is:

- 4 6 3 6 (or "INFO") to access debugging information on your phone.

Now, these hidden codes are no longer fixed with the applications in our Koller Secret suite. You can set your secret code with whatever numbers you like and change them whenever you want. Only you know and can use these codes to access the hidden features provided by our applications (i.e., to access your private media).

One can use these secret codes by putting the series of digits between a *#*# prefix and a #*#* suffix.

For example, the code 4 6 3 6 will become * # * # 4 6 3 6 # * # *, and you can dial it with your phone's dial pad. The hidden application will open after you hit the final * button.

HOW-TO: (FIRST TIME RUN)
Step 1:
- Open your phone's gallery app or Files management app.
- Select one or some photos/videos.
- Click the "Share" button.
- Choose "Hide" from the list.

Step 2:
- Koller Secret will be launched for the first time!!!
- It will ask you to create your secret code. Please follow the instructions on the screen to finish this *crucial* step.
- You can choose any number you like; the longer, the better (as long as you can remember it).
- Click "Save."

Step 3:
- If everything goes well. The first photo/video importing process will start.
- Let the importing run and finish.
- You are now done with the initial setup.

HOW-TO: (normal)
- Open your phone app.
- Dial: *#*#
- Then, your SECRETCODE (that you set in step 2).
- Then, dial #*#*
- The Koller Secret application will "magically" appear!
- Enjoy!

OUR COMMITMENT TO USER PRIVACY:
We, the creators of Koller Secret applications, are Internet User Privacy Advocates. We fight for the rights of users to protect their privacy and personal data online. We vow to say NO to any activities that involve: targeted online advertising, personal identity tracking, user data extraction and sharing, or anything that violates those rights. There is no part in our application that monitors, extracts, or collects any personal data from the users, even technical debugging logs. We also do not manage any centralized server that stores users' information. The users download and use our applications at their discretion. No registration is required. Our applications' features should be fully operational even without the internet. And we also refuse to collaborate with any third party that evidently or potentially violates our policy. If you notice any suspicious activity coming from our applications or from the third-party modules that we use, please inform us immediately.