In a bid to develop their software for women, Apple are improving ways to track your reproductive health with IOS 9.

The new IOS 9 update was announced by Tim Cook at the worldwide developers Conference on Monday, and there is a completely new feature available to users.

Apple's iPhone will now let people track exactly how often, when and how they have sex, so not only will you be able to track your work outs in the gym, but in the bedroom too!

Apple's iOS 9 update will add a new feature to the Health App under "Health Data."

The new feature titled "Reproductive Data" will track exactly how often, when and how the user has sex.

Users will also be able to enter information on whether protection was used, dates and times.

Once the information is entered the Health App will plot it on a chart or in a numerical read-out like it does will all other data such as calories or steps taken.

Apple keeps that data private by default, but you can choose to send it to your doctor or anonymously provide your information to universities and physicians for research studies.

The iOS 9 update will be available for all users this autumn but until then, here are some extremely useful apps for tracking your reproductive cycle on your smartphone.

1. Clue

2. My period tracker

3. My pill