No, the other person does not need the Linq app to connect with you! That's the beauty of Linq. Have someone just tap your product, or scan your QR code with their camera, and they instantly have your info. No app required. Their device will pull up your Linq page using the web if they do not have the app! If they do have the app, it will pull up your page with the app and add you to each other's contacts automatically.