MLH Badges App (mlhbdapp) is a community-built tool to track and display event participation badges for hackathon attendees (assumption: you meant the MLH badges app).
Because this is not a verified app from an official store (like Apple App Store or Google Play), please exercise caution: mlhbdapp link
Many APK developers use Telegram as their primary distribution network. Search for the official or verified MLHBD Telegram channel. These channels often pin the latest working link at the top. MLH Badges App (mlhbdapp) — Quick Guide What