iPhone Screenshots


Anonymously ask anyone a video question. We connect you with another Mustknow user and let you decide if you want to ask them an anonymous question or not.

When asking a question you are always anonymous. We put a mask on your face and distort your voice so that nobody knows who you are. Once you've asked the question you can discuss the video in a chat/

To chat with the Mustknow team add our Snapchat --> Mustknowapp

Please send any questions or feedback to Jacob@mustknow.co


Face tracking technology by ULSee
Video hosting by Vidme


What's New

Version 4.0.0

bug fixes

Ratings and Reviews



I originally got a text saying someone sent me an anon message- now I am 20; however, I love guessing games so I thought it'd be fun to try and figure out which one of my friends sent the message. There were a couple of vids all from the same person (the same clothes were worn) well I couldn't figure out who it was so I decided to wait until the morning and ask some friends. when I check this morning not only did I have TONS of videos from people I didn't even know, My original videos were deleted somehow!!! I am very confused how this works. This sounds like it would be a cool idea but it is just poorly done.
also if anyone has any answers to how I can get the original vids back pls lmk!

Do Not Download


I have never written an app review before, but this app is so unfathomably atrocious that I can't resist. I got an anonymous message saying a friend wanted me to download it, which I assume was either a mistake or a manipulation on the part of the app because I refuse to believe that anyone can find even the slightest enjoyment in this piece of garbage. It is the single most poorly designed and least functional app I have ever had the displeasure to discover. I have no earthly idea as to how this is popular, besides the stupid concept that I suppose could attract a small following for a couple days. A better, more functional app with the same concept could be put together by a seconds-old newborn child. Don't do the buffoons who programmed this trash any favors by downloading this app.

Terrible App Coming Out of the Gates


I guess this app just started, and somebody anonymously invited me to try it, but it really does not seem to work well. Disclaimer this app WILL be used to anonymously harass people, so if this is something that will bother you do not download.

The app itself does not work well. All you have to do is approve camera and microphone privileges , and then it wants you to invite every single person you know to use the app. There's no sign up process although it does use your contacts without your approval.

It would be nice to see friends that are using the app, so you know who can send and receive messages. It also seems that questions from people who you don't know will come on your feed? Not really sure

In short, terrible interface with no explanation of how it works. Definitely needs work to be an option app that could be successful amongst high schoolers who want to get the scoop on their crush or something like that. Definitely will be used for cyber bulking much like formspring was.


Impa Software Sdn Bhd
92.9 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 12+ for the following:
Infrequent/Mild Mature/Suggestive Themes
Frequent/Intense Profanity or Crude Humor
© 2016 Story Star Inc


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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