KiWuWeb is a free Android app developed by siam-net that offers a range of features related to pregnancy and conception. With this app, users can create and analyze basal temperature curves, calculate their fertile days, and use the pregnancy and ovulation calendar widgets. The app also includes tools such as a pregnancy calculator and a delivery date calculator, making it a comprehensive tool for those trying to conceive or already pregnant.

KiWuWeb also provides a mobile forum where users can find information on topics such as natural family planning and parenting. Additionally, users can register for a free account to access the full range of features, including the ability to analyze basal temperature curves and participate in the community. Overall, KiWuWeb is a useful tool for those looking for a comprehensive, free app to support them during their pregnancy journey.