The best alternatives to MeetPass are Social media counter, Notopass, and Aqua. If these 3 options don't work for you, we've listed a few more alternatives below.
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Notopass is an Android App that lets you share your account with others without revealing your username or password and also control their access anytime. The invitee can open logged in account in the mobile app or in the desktop using chrome extension.
WhosDown is a mobile app where you can genuinely make friends—connecting with someone that shares a “common interest” in real-time. A common interest can be any activity like sports, gaming, shopping, or having coffee, you name it.