For a period tracking app, you can use Clue. They also has many well researched articles on the female reproductive system on their app and their website Hello Clue. Source: about 1 year ago

Here's the website, they have an Apple version too: https://helloclue.com/. Source: over 1 year ago

I came up with the various symbols myself; for fertility stuff my first thought would be to look at what Clue is using these days, if you're drawing a blank (as it were) on anything! Let me know if you'd like to see a more recent/more filled-out version :). Source: over 1 year ago

Can’t vouch for the efficacy because I haven’t used the feature, but the cycle tracking app I use clue has a new birth control feature that’s FDA cleared. it’s by far my fav tracking app and i’ve been a loyal user for years now, so i’m sure their BC function is good too. Source: over 1 year ago

Please check out Clue App on Android and iPhone. This app refuses to sell data and will keep you safe. It's already used by 12 million people, make the number higher! Source: almost 2 years ago

Consider making a Yes/No/Maybe listand filling it out with a prospective partner to see where you're both at. There's also an app called Spicer that lets you and a partner answer sets of yes/no/maybe sexual interest questions and only reveals the areas where both partners match. Not sure how lesbian sex act friendly it is, haven't used it myself. But that way if one person isn't typically satsfied with a sexual... Source: almost 2 years ago

I think it might have been https://spicer.app. Source: over 2 years ago

You can also try the spicer app. You guys both answer the questions with yes/no/maybe and it show you your matches. You can download Spicer app here: https://spicer.app. Source: over 2 years ago

Spicer app for couples Spicer app for couples. Source: almost 3 years ago

Check out the Wheel of Consent and play the three minute game. Download Spicer and compare your interests. Join us over at r/sexover30 because we’re all learning how to keep it interesting and it’s a good resource. Source: almost 3 years ago