iPhone Screenshots


Early Warning with Ultrasonic Accuracy

Connect to Your Anonymous Network to Learn about Disease Approaching You

This app was primarily designed for use in Allegheny County, Don Salvador Benedicto, Georgia Tech, Grand Valley State University, Harvard, King Abdullah University of Science and Technology, Las Vegas in New Mexico, and Santa Fe.

NOVID goes beyond contact tracing. It is the first and only application that warns you about cases of COVID-19 in your personal network before you you're exposed, while keeping you anonymous. It gives you personalized COVID Radar about disease spread. It also gives you exposure alerts if you have spent a long time near people who later self-report positive tests. It's your radar and shield in this difficult time.

Under the hood, NOVID automatically generates a random anonymous identifier, which has no relationship to your personal information. You don't need to provide an email address, phone number, username, or password. NOVID periodically scans the nearby area using a combination of Bluetooth, Wi-Fi, and ultrasound, detecting and sending only anonymous identifiers.

What’s New

Version 4.0.3

Version 4.0.3 includes minor bug fixes.

Ratings and Reviews

4.7 out of 5
238 Ratings

238 Ratings

CutiePtarmigan ,

Great Design!

Great design and user experience! I tested this app with another person's in my household and it immediately registered an encounter. I've yet to venture outside wl this, but will definitely keep it open when I do so. Btw, if you're interested in learning about the background work, listen to Prof. Loh's helpful info. sessions on Facebook.

Update: Standby Mode + Guided Access makes my iphone behave almost exactly the same as when it's normally shut off. Great design once again!

Morgan9363 ,

Does it really work?

It’s a good app design and some people seem to be having success with it. I know that before the app had to be open to work on iOS, and now the new wifi background mode seemed promising. However, my roommates and I all have this app. We tested it both ways, with the app open and in background mode, none of us got a new connection. I have had this app for around 4-5 months, and live in a decent sized college town. I have never got even 1 connection. I even have kept it open in public, like it recommends. I keep it, because I think it’s important. However, I am not sure it actually works..

ShehzanM ,


I downloaded Novid and it is simply LEGENDARY. The app is fully anonymous it doesn’t even store personal information which is very unique for a contact tracing app. Plus because they use Bluetooth and ultrasound they are able to be more precise and give me the best insights I need to take proper precautions. This can and will make contact tracing more precise and ease the healthcare system. I feel so safe knowing people like the team at NOVID are out there building things to make the world a safer place

App Privacy

The developer, Expii, Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Health & Fitness
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

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

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