Now that we've had users sign-up and give feedback, I felt the concept had been validated. The next step was to check the boxes, chime the bells, and wet the whistles for a Progressive Web App. Once the software had offline support I used the The Digital Asset Links protocol and API to generate an .apk via Android Studio. Shortly after, I added BJJ Tracker to the Google Play store. Since then, this has been a major source of organic traffic.