Log your period, symptoms and mood in seconds. Luna Flow predicts your next period and estimates your fertile window from your own history, and keeps everything you log on your phone.
A period tracker, period calendar and cycle tracker that stays simple: two taps to log, clear answers when you look.
Your next period and the six after it, worked out from your own cycle history and updated every time you log.
Logged and predicted periods plus your estimated fertile window. Tap any day to see or change it.
Flow, 16 symptoms, 12 moods, energy, discharge, sleep, water, temperature and weight. A 10-second check-in.
Average cycle and period length, regularity, which symptoms show up in which phase, and BBT, sleep and weight charts.
A daily birth control pill reminder with a pack view for 21+7, 24+4 or continuous packs.
A heads-up before your period, when your fertile window starts, and a daily check-in if you want one.
Write how you feel. Every entry is tagged with your cycle phase so patterns are easy to spot.
Speak, read the text back, then save. Uses your phone’s own speech-to-text; Luna Flow never records audio.
A guided breathing exercise, self-care ideas, and food and movement ideas for each phase.
Luna Flow shows which phase you’re in and what often comes with it, with ideas for food, movement and rest in each one.
Your period. Energy can dip, so rest, warmth and iron-rich food help. Log flow and cramps to see how each period compares.
Oestrogen rises and many people feel a lift in energy and mood. A good time for new plans and harder workouts.
The days around ovulation. Calendar estimates can’t confirm it; BBT and discharge tracking add helpful clues.
Progesterone rises. PMS, bloating and cravings can show up. Seeing them coming makes them easier to plan around.
Everything you log stays on your phone. We never see it, and there is nothing of yours on a server to leak.
Free, supported by ads. Ads come from Google AdMob. Nothing you log is ever shared with advertisers or used to choose ads, and you can go ad-free for 24 hours by watching one short video.
Read the privacy policy →RedFleet builds small, focused, privacy-respecting Android apps. Luna Flow is our period tracker: calm to use, honest about what it can and can’t tell you, and built so your health data never leaves your phone unless you send it.
Questions or feedback? Email redfleetstudios@gmail.com.
Predictions and fertile-window dates are calendar-based estimates from what you log. They get better as you track, but they can’t confirm ovulation.
Plain, cautious guides on periods, symptoms and wellbeing. New articles also appear in the app’s Library.