There are downsides with downloading their app just to input bad data, but it's a fun thought.
edit: While we're at it we might as well offer an alternative app to people.
I posted in !opensource@programming.dev to collect recommendations for better apps
The post: https://lemmy.ca/post/32877620
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
Irregular menstrual cycles are very common and happen for a lot of different reasons. Also, there are different kinds of "regular" periods. Someone could be said to have regular periods even if they happen on shorter or longer cycles than the typical 28-30 days provided that it's a consistent pattern without significant deviation for that person.
Still more regular than randomized data.
You do not have a good understanding of menstruation and gynecology if you think that's always the case. There are so many variations of irregular menstruation that trying to exclude data based on irregularities would be very difficult or get rid of a lot of legitimate irregular data.