Only the current version so far — new entries appear as the app ships updates.
Magicblocks.io - IoT | MQTT is an education app by Thingsnode with 1,000+ downloads (about 1.2K estimated). +1 installs in the last 7 days. Released Jan 4, 2021. Install growth, rank history, SDKs and ad networks.
From the store listing: “This app send values of sensor in your phone to a specific MQTT client.”