I couldn't find a good one, so I'm open to recommendations

For christ sake, is there no open source option for such a simple task?

Edit:
2 people here could point to drip within 15 minutes of my post, and a third to the fact there are options on F-droid. So why the fuck don't women just use that?
Well i guess the ones with harmful advertising have better graphics or somemeting. Or the fact they allow advertising makes them more visible on google play. And you probably can't even get drip on iPhones.

Because its effort. We have to get the average person to care about their security and privacy before they will bother using these alternatives. It's much easier for them to download a popular one off an app store and have the data stick with them, than it is to download f-droid, find the right app, make sure its still supported and setup their own data backup.

For christ sake, is there no open source option for such a simple task?

Edit:
2 people here could point to drip within 15 minutes of my post, and a third to the fact there are options on F-droid. So why the fuck don't women just use that?
Well i guess the ones with harmful advertising have better graphics or somemeting. Or the fact they allow advertising makes them more visible on google play. And you probably can't even get drip on iPhones.

For christ sake, is there no open source option for such a simple task?

Edit:
2 people here could point to drip within 15 minutes of my post, and a third to the fact there are options on F-droid. So why the fuck don't women just use that?
Well i guess the ones with harmful advertising have better graphics or somemeting. Or the fact they allow advertising makes them more visible on google play. And you probably can't even get drip on iPhones.

For christ sake, is there no open source option for such a simple task?

Edit:
2 people here could point to drip within 15 minutes of my post, and a third to the fact there are options on F-droid. So why the fuck don't women just use that?
Well i guess the ones with harmful advertising have better graphics or somemeting. Or the fact they allow advertising makes them more visible on google play. And you probably can't even get drip on iPhones.

Cambridge researchers urge public health bodies like the NHS to provide trustworthy, research-driven alternatives to platforms driven by profit.

Women deserve better than to have their menstrual tracking data treated as consumer data - Prof Gina Neff

Smartphone apps that track menstrual cycles are a “gold mine” for consumer profiling, collecting information on everything from exercise, diet and medication to sexual preferences, hormone levels and contraception use.

This is according to a new report from the University of Cambridge’s Minderoo Centre for Technology and Democracy, which argues that the financial worth of this data is “vastly underestimated” by users who supply profit-driven companies with highly intimate details in a market lacking in regulation.

The report’s authors caution that cycle tracking app (CTA) data in the wrong hands could result in risks to job prospects, workplace monitoring, health insurance discrimination and cyberstalking – and limit access to abortion.

They call for better governance of the booming ‘femtech’ industry to protect users when their data is sold at scale, arguing that apps must provide clear consent options rather than all-or-nothing data collection, and urge public health bodies to launch alternatives to commercial CTAs.

Menstrual tracking app data is a ‘gold mine’ for advertisers that risks women’s safety – report

Smartphone apps that track menstrual cycles are a “gold mine” for consumer profiling, collecting information on everything from exercise, diet and medication

University of Cambridge (www.cam.ac.uk)

Besides drip, Euki (github) is another option on both the play store and iOS.

Note that both of these options are maintained by tiny teams with limited resources.

People are mentioning drip, and that's on the Play Store. It's literally the same amount of effort as installing a surveillance app.

For christ sake, is there no open source option for such a simple task?

Edit:
2 people here could point to drip within 15 minutes of my post, and a third to the fact there are options on F-droid. So why the fuck don't women just use that?
Well i guess the ones with harmful advertising have better graphics or somemeting. Or the fact they allow advertising makes them more visible on google play. And you probably can't even get drip on iPhones.

People don't give a shit, and prefer to stay uninformed. Maybe more Darwin awards are necessary?

Edit:
Maybe that was out of line, but I'm just so fucking tired of people who choose to be ignorant.

Cambridge researchers urge public health bodies like the NHS to provide trustworthy, research-driven alternatives to platforms driven by profit.

Women deserve better than to have their menstrual tracking data treated as consumer data - Prof Gina Neff

Smartphone apps that track menstrual cycles are a “gold mine” for consumer profiling, collecting information on everything from exercise, diet and medication to sexual preferences, hormone levels and contraception use.

This is according to a new report from the University of Cambridge’s Minderoo Centre for Technology and Democracy, which argues that the financial worth of this data is “vastly underestimated” by users who supply profit-driven companies with highly intimate details in a market lacking in regulation.

The report’s authors caution that cycle tracking app (CTA) data in the wrong hands could result in risks to job prospects, workplace monitoring, health insurance discrimination and cyberstalking – and limit access to abortion.

They call for better governance of the booming ‘femtech’ industry to protect users when their data is sold at scale, arguing that apps must provide clear consent options rather than all-or-nothing data collection, and urge public health bodies to launch alternatives to commercial CTAs.

Menstrual tracking app data is a ‘gold mine’ for advertisers that risks women’s safety – report

Smartphone apps that track menstrual cycles are a “gold mine” for consumer profiling, collecting information on everything from exercise, diet and medication

University of Cambridge (www.cam.ac.uk)

Everybody’s a bad ass talking about Darwin awards when that’s something they understand, but suddenly you will expect sympathy when it’s something you don’t. Maybe try havinga little more empathy for the people of the world who are not as aware of how bad privacy has gotten. Believe it or not, we are of a minority perspective. A very small one at that.

I’m more inclined to believe it’s partially a failure on our part to educate people, but mostly the issue is that it’s not a fair fight. You are expecting the average person to successfully overcome the resources and influence of sometimes decades old, billion dollar, multinational companies and governments. But I guess it’s a lot easier to just call everybody who doesn’t take this as seriously as we do a dumbass. Certainly allowed you to wipe your hands of it and act smug that’s for sure.

I get what you’re trying to say, but this is basically just roundabout victim blaming. Women shouldn’t have to worry about whether or not someone is going to weaponize data on their menstrual cycle against them. Yes it is good to lock your door at night, but ultimately you don’t blame somebody for getting robbed just because they didn't lock it. You blame the thief.

Not everybody is as aware of privacy issues as the rest of us. We have to help them, not berate them.

Cambridge researchers urge public health bodies like the NHS to provide trustworthy, research-driven alternatives to platforms driven by profit.

Women deserve better than to have their menstrual tracking data treated as consumer data - Prof Gina Neff

Smartphone apps that track menstrual cycles are a “gold mine” for consumer profiling, collecting information on everything from exercise, diet and medication to sexual preferences, hormone levels and contraception use.

This is according to a new report from the University of Cambridge’s Minderoo Centre for Technology and Democracy, which argues that the financial worth of this data is “vastly underestimated” by users who supply profit-driven companies with highly intimate details in a market lacking in regulation.

The report’s authors caution that cycle tracking app (CTA) data in the wrong hands could result in risks to job prospects, workplace monitoring, health insurance discrimination and cyberstalking – and limit access to abortion.

They call for better governance of the booming ‘femtech’ industry to protect users when their data is sold at scale, arguing that apps must provide clear consent options rather than all-or-nothing data collection, and urge public health bodies to launch alternatives to commercial CTAs.

Menstrual tracking app data is a ‘gold mine’ for advertisers that risks women’s safety – report

Smartphone apps that track menstrual cycles are a “gold mine” for consumer profiling, collecting information on everything from exercise, diet and medication

University of Cambridge (www.cam.ac.uk)

I happen to be a penis owner.

So what would happen if I were to install and use such a monthly tracker app and pretend I've been having regular monthlies for a while, then suddenly I miss a couple periods, then suddenly start having periods again?

Would the cops come beating my door down claiming I had an abortion?

Fuck this dystopian mass surveillance shit!

For christ sake, is there no open source option for such a simple task?

Edit:
2 people here could point to drip within 15 minutes of my post, and a third to the fact there are options on F-droid. So why the fuck don't women just use that?
Well i guess the ones with harmful advertising have better graphics or somemeting. Or the fact they allow advertising makes them more visible on google play. And you probably can't even get drip on iPhones.

Do women need an app for this? Surely a piece of paper would work just as well, and have a 0% chance of selling your data.

I admit that was out of line, but for fucks sake, there are so many stupid people doing stupid things it's unbearable. Voting for Trump for example. And the Russian people supporting the war on Ukraine.