Luteal is a private period and cycle tracking app for iPhone. It tracks your menstrual phases, mood, symptoms, and ovulation, and lets you share your cycle with a partner.

Luteal is free to download on the App Store. A premium version with additional features is available as an in-app purchase.

Yes. Luteal is built with privacy as a first principle. Your cycle data is encrypted in transit and at rest, never sold or shared with third parties, and never shown to advertisers. Partner sharing is strictly opt-in and revocable at any time.

Does Luteal work on Android?

Luteal is currently available on iOS (iPhone) only. An Android version is not yet available.

Luteal phase: symptoms, mood, energy and what to expect

What is the luteal phase?

The luteal phase begins after ovulation and ends when your next period starts. Its length varies, but it is often associated with a rise in progesterone.

Many people notice changes in energy, emotional sensitivity, hunger, sleep, or focus during this part of the cycle.

Why tracking it helps

Tracking your luteal phase can help you tell the difference between a one-off bad day and a pattern that returns before your period.

Luteal shows your current phase and lets you log mood and symptoms so your own trends become easier to recognize.

When to seek medical advice

Mild discomfort can be common, but severe pain, intense emotional distress, or symptoms that disrupt daily life deserve professional medical attention.

An app can help you document what you feel. It does not replace a clinician.

Frequently asked questions

How long is the luteal phase?

The luteal phase typically lasts 10 to 16 days. A luteal phase shorter than 10 days may indicate a hormonal imbalance and is worth discussing with a healthcare provider if it occurs repeatedly.

Why do I feel tired and moody before my period?

The drop in estrogen and progesterone during the late luteal phase can affect serotonin levels and energy. Fatigue, irritability, food cravings, and emotional sensitivity are common responses to these hormonal shifts.

What is the difference between PMS and the luteal phase?

The luteal phase is the full second half of your cycle, from ovulation to your next period. PMS refers specifically to the physical and emotional symptoms some people experience during the latter part of the luteal phase, usually in the week before their period.