Moodum is a biorhythm tracker app that displays your energy levels for the next 90 days based on the proven Biorhythm method. Developed by 50saas Inc., this free app allows you to monitor your mood levels and biorhythm for up to 3 days ahead.

What is Biorhythm? A biorhythm is an attempt to predict various aspects of a person's life through simple mathematical cycles. The theory was developed by Wilhelm Fliess in the late 19th century and was popularized in the United States in the late 1970s. The theory of biorhythms claims that our daily lives are significantly affected by rhythmic cycles.

With Moodum Premium, which is available as an in-app purchase, you can monitor your mood levels and biorhythm for the next 90 days. The premium subscription is priced at $9.99 USD per year. If you choose to cancel your premium subscription, you can continue using Moodum for free.