The pro version for free in settings.
PushFit Pro (https://apps.apple.com/au/app/pushfit-pro/id766098740)
PushFit Pro is a simplistic push-up counter and tracker. PushFit Pro allows you to workout at home, at the gym, or anywhere! Start your workout by placing your device on the ground under your chest. As you do push-ups, the proximity sensor in your device will automatically count and record your push-up reps. PushFit Pro allows you to visualize workout history and patterns with graphs and calendars.
Thanks, OP