There are downsides with downloading their app just to input bad data, but it's a fun thought.
I posted in !opensource@programming.dev to collect recommendations for better apps
The post: https://lemmy.ca/post/32877620
edit, while we're at it we might as well offer an alternative app to people
Leading Recommendation from the comments
The leading recommendation seems to be Drip (bloodyhealth.gitlab.io)
Summarizing what people shared:
- accessible: it is on F-droid, Google Play, & iOS App Store
- does not allow any third-party tracking
- the project got support from "PrototypeFund & Germany's Federal Ministry of Education and Research, the Superrr Lab and Mozilla"
- Listed features:
- "Your data, your choice: Everything you enter stays on your device"
- "Not another cute, pink app: drip is designed with gender inclusivity in mind."
- "Your body is not a black box: drip is transparent in its calculations and encourages you to think for yourself."
- "Track what you like: Just your period, or detect your fertility using the symptothermal method."
Their Mastodon: https://mastodon.social/@dripapp
I don't think this is likely to work tbh. I'm sure the app has enough device data to link the user with a broader data profile that would easily eliminate data from people that don't actually have periods.
The data profiles people build on citizens aren't limited to one data source, and emails/phone numbers/browser fingerprints/device details are all things that can be keyed between data sets to relate identities.
Fascist law enforcement can and would do this kind of thing to chase individuals. This kind of noise seems easy to filter out.