LubaHelp & support
We usually reply within two business days.
Please don't send health details you'd rather keep private. We don't need them to help, and email isn't the place for them. If you think you have a medical emergency, call 911 or your local emergency number.
Your cycle
How does Luba predict my next period?
It starts from the cycle and period length you enter during setup. As you log period starts, it learns your own average, ignores gaps that look like a forgotten log, and shows a likely range (for example ±2 days). If your cycles vary a lot, it says so and widens the range.
Can I use Luba as contraception?
No. Predictions are estimates from your past cycles, not measurements, and ovulation can shift from month to month. Don't rely on Luba to prevent or plan a pregnancy.
My period is late. What happens?
Luba shows how many days late it is and moves the prediction forward each day until you log it. Stress, travel and illness can delay a period; if you could be pregnant, a test can tell you.
My cycles are irregular, or I use hormonal birth control.
Turn on "My cycles are irregular" in Settings → Cycle settings. Luba then shows wider ranges. With hormonal contraception, PCOS or perimenopause, day-by-day phases matter less: use Meals → Target a symptom, which recommends food by what you're feeling instead of by cycle day.
Meals
Where do the recipes and nutrition numbers come from?
Luba has 592 recipes from 27 food traditions. Calories and macros are calculated from each recipe's ingredient amounts using USDA FoodData Central. Each phase and symptom suggestion shows how strong the evidence behind it is.
Can I filter for my diet or allergies?
Yes. In Settings → Traditions & diet you can choose a diet (such as vegetarian or no red meat), allergens to avoid and health conditions. Dishes that aren't safe for a condition you select are hidden, and safety notes for foods that need careful preparation are always shown.
How does "Cook with what you have" work?
In Meals → Fridge, add the ingredients you have. Luba shows dishes you can make now, and ones missing one or two things, best for your current phase first. You can add missing ingredients to your grocery list.
Your data
Is my data private?
Yes. Everything stays on your iPhone: no account, no server, no tracking. See the privacy policy.
How do I move my data to a new iPhone?
On your old phone, open Settings → Your data → Download backup and save the file somewhere you can reach from the new phone, such as iCloud Drive. On the new phone, open Luba and choose Settings → Your data → Restore. Restoring from an iPhone backup also brings Luba's data across.
How do I delete everything?
Settings → Reset and set up again clears all your logs and settings. Deleting the app also removes all of its data from your iPhone.
How do I share my cycle history with my doctor?
Settings → Your data → Doctor report creates a one-page summary of your cycle lengths, periods, flow and symptoms that you can print or save as a PDF.
Reminders
I'm not getting reminders.
- Check the reminder is on in the app (tap the bell).
- Make sure notifications are allowed: iPhone Settings → Apps → Luba → Notifications.
- Open Luba once in a while: reminders are refreshed each time you open the app, so predictions stay current.
Can I hide what my notifications say?
Yes. Turn on "Discreet notifications" in Reminders, and your lock screen will only show "Luba: You have a reminder."