Question: Is there a free API that lets me add health-related features to my mobile app without breaking the bank?

If you're looking for a free API to integrate health-related features into your mobile app, Integrated Humans is worth a look. This API offers a single interface for retrieving health and fitness data from multiple smartphones and wearables. It handles the complexity of handling large-scale health data and has no data limits, so it's a good choice for developers who don't want to jump through a lot of hoops.

Another platform worth a look is Azumio. It has a variety of tools and apps for tracking different aspects of health and wellness, including diabetes management, food identification, personal training and sleep tracking. Azumio's Food Recognition API and Instant Diabetes Test offer more advanced features for monitoring health in detail, and with more than 100 million downloads across the globe, it's a well-established digital health platform.

If you want something more personal, August offers WhatsApp-based health advice powered by AI answers for mental health, nutrition and fitness. People can chat with August by sending messages, including lab reports, and get a response. The service uses end-to-end encryption to protect privacy and is available 24/7, so it can be a good adjunct to health information and advice.

Last, Buoy is an AI-powered health assistant that offers personalized advice on symptoms and treatment options through a conversational interface. It uses a large library of medical data to offer symptom checkers and community support. Buoy hopes to improve health literacy and help people navigate care pathways, so it can be a good option for people who want to privately explore symptoms and find advice.