Question: I'm looking for a free API to get started with integrating health and fitness data into my mobile app, do you know of any options?

If you're looking for a free API to bring health and fitness data into your mobile app, Integrated Humans is worth a look. The API aggregates data from multiple sources, including phones and wearables, which can save developers a lot of time. It's geared for companies with a lot of health and fitness data, and it can offer insights without requiring all the separate integration work, so you can concentrate on what makes your app great.

Another API worth a look is Vital, which aggregates data from wearables and labs into a unified data source. With support for more than 500 devices and labs, it's a good option for health data integration. Vital offers strong security certifications and tools for many programming stacks, so it should be good for a variety of apps, from personalized health apps to medical research.

If you're building a nutrition-focused app, Edamam has a broad set of APIs for nutrition data. The APIs offer detailed nutrition analysis and recipe search, which can help developers build apps that help people make better eating decisions. That's a useful addition to a health and fitness app that's designed to help people live healthier.

Last, Body Scan from Zing offers AI-based fitness tools that generate workout routines based on body data calculated from full-body selfies. The service offers details on body fat, caloric intake and macronutrient ratios, as well as video workouts based on your goals. It's free to use and has a strong focus on data privacy and security, so it's a good option for people who want to use a data-driven fitness approach.