Computer Vision Free tier (50 images/day), paid plans from $50/mo
OpenALPR
Automatic License Plate Recognition API that detects and reads license plates from images or video streams.
Overview
OpenALPR is a robust license plate recognition system that can be used for parking lot monitoring, access control, and more. It offers a cloud API with easy integration. The free tier is sufficient for small gyms; larger operations may need a paid plan.