I’m currently looking at period tracker apps - don’t ask why (it’s an apk downloader thing).
Brilliant business model:
- Once hooked, users slowly lock themselves in.
- Automatically tuned to the perfect target audience (young adults;female;medical problem)
- Users voluntarily disclose the perfect time to pitch them products and services.
Dear women: if you want/need/have to track this kind of thing, make sure to choose an app that a) doesn’t require an internet connection and b) allows you to export your collected data.