Help
Practical answers. If yours is not here, write to us.
Fasts
I forgot to start or stop my fast. Can I fix it?
Yes. Open the fast (the current one from the timer, a past one from the history) and change its start or end time. Statistics update on their own.
How do I add a fast from a previous day?
Open the history, pick the day in the calendar and add a fast with its start and end time.
I stopped earlier than planned. Is that a problem?
No. Stopping early is a normal action. The fast is saved with its real duration.
Why is there a warning on long fasts?
Nistia shows a warning for any fast longer than 24 hours and does not allow plans longer than 72 hours. Long fasts carry risks and should be discussed with a doctor first.
Reminders and widgets
My reminders do not arrive.
Check that notifications are allowed for Nistia in the iPhone Settings, under Notifications, and that a Focus mode is not silencing them. Then open Nistia once so it can reschedule its reminders.
How do I add the widget?
Touch and hold an empty area of the Home Screen, tap Edit, then Add Widget, and search for Nistia. Lock Screen widgets are added by customizing the Lock Screen.
The Live Activity does not show.
In the iPhone Settings, open Nistia and check that Live Activities are allowed. A Live Activity starts with a fast and ends with it.
Data
How do I move my data to a new iPhone?
On the old phone, create a backup file from the settings and save it to Files or send it to yourself. On the new phone, install Nistia and restore from that file.
How do I export my history?
From the settings, export your fasts as a CSV file. It opens in any spreadsheet.
How do I delete everything?
The settings have an option to erase all data. It removes every fast, note, weight and water entry from the device. Deleting the app has the same effect. Weight entries already written to Apple Health are managed in the Health app.
Apple Health does not sync my weight.
In the Health app, open Sharing, then Apps, then Nistia, and allow reading and writing weight. If you prefer not to, Nistia keeps working with the weight you enter in the app.
Purchases
How do I restore a purchase?
Open the settings in Nistia and tap Restore purchases. Use the same Apple Account as the one that made the purchase.
How do I cancel a subscription?
Subscriptions are managed by Apple. Open the iPhone Settings, tap your name, then Subscriptions, select Nistia and cancel. Your history stays available afterwards.
How do I ask for a refund?
Refunds are handled by Apple, at reportaproblem.apple.com.
Health
Nistia does not give medical advice. If you feel unwell during a fast, stop and eat, and contact a health professional. If food or fasting has become a source of distress, talk to a doctor or to an eating disorder helpline in your country.
Contact
Write to us and we reply by email, usually within two working days.