Choose Your Atomic Fast Reminders
Set fasting, meal and water reminders in Atomic Fast. Choose meal and weekly recap times, check phone permissions and understand why an alert might not appear.
Maybe you want a prompt to log dinner, but don’t want updates throughout a fast. Or you’ve turned a reminder on and still haven’t seen it. Both situations start in the same place: Atomic Fast’s notification settings.
The app chooses which reminders to schedule. Your phone decides whether notifications are allowed and how they appear. Checking both is more useful than switching every reminder on.
The short version
Open Me → Notification Settings on iPhone, or Me → Notifications on Android. Check Notification Permission, then choose the reminder categories you want. Meal reminders have a time picker; weekly recaps have a day and whole-hour time. Return to the app after changing phone permissions, and remember that reminders don’t start or end a fast for you.
Open the settings and check permission
These steps use English labels after initial app setup. Notification settings are available without Atomic+ and don’t use an AI scan.
- Open Me and find the Notifications section.
- Tap Notification Settings on iPhone or Notifications on Android.
- Read Notification Permission at the top and enable notifications if needed.
The page contains Fasting, Meals, Hydration and Weekly Summary sections. Changes are saved through the controls; there is no separate Save button. Permission actions differ by platform:
- On iPhone: if permission hasn’t been requested, use Enable. If notifications are disabled, use Settings, then Open Settings, and allow notifications for Atomic Fast. A Provisional status is different from full permission; check the phone’s notification settings if you want ordinary alerts.
- On Android: use Enable if shown. On Android 13 and later, this requests notification permission; on older versions it opens the app’s system notification settings. If a previous refusal means no prompt appears, open Atomic Fast’s notification controls in the phone’s Settings app directly.
Return to Atomic Fast afterward. On iPhone, leave and reopen the notification page if its status still shows the previous permission state. An enabled category inside Atomic Fast cannot override a phone-level block.
Two places to check
A reminder needs
more than a switch.
Atomic Fast
Choose in the app
Categories and supported times.
Phone settings
Allow on the phone
Permission, sound and alerts.
Allowed notifications can still be silent or delayed by phone settings.
Choose fasting reminders
The three fasting switches serve different purposes:
Fast End Reminder requests an alert at your chosen goal time. Reaching the goal doesn’t save a completed fast or stop the timer. You still end the session yourself, as explained in the first-fast guide. An open-ended fast has no goal time for this reminder.
Phase Milestones controls alerts associated with the timer’s phase labels. These use elapsed time. They do not measure or confirm ketosis, autophagy or another bodily state.
Fast Start Reminder includes a nudge 14 hours after a fast ends, plus a later return-to-app nudge if you haven’t started another fast. It has no daily start-time picker. Turning it on doesn’t create a repeating fasting schedule or start a new session.
Choose these preferences before your next fast when possible. Turning a category on partway through a session doesn’t necessarily schedule its remaining alerts immediately. You don’t need to end or recreate a fast to troubleshoot a notification.
If you want fewer interruptions, you might keep the goal reminder and turn off phase updates. That’s a notification preference, not a recommendation to extend a fast until an alert arrives.
Set a meal logging reminder
Turn on Meal Logging Reminder under Meals. Reminder Time appears beneath it. Choose the hour and minute you want, then finish the time selection using your platform’s picker.
For example, 7:30 pm might be a convenient moment to check your meal log. The reminder asks you to record food; it doesn’t schedule dinner, add an entry or start a fast. Check morning versus evening when your phone uses a 12-hour clock.
The app checks for meals already logged that day when it returns to the foreground and can cancel the pending meal reminder. Don’t treat this as a guaranteed check at the instant an alert would appear. Opening the app and your logging activity can affect whether you receive that day’s prompt.
To move the reminder, change Reminder Time. To stop requesting it, turn off Meal Logging Reminder. Neither action deletes a meal. The meal-logging guide covers adding the record itself.
Choose hydration settings
Turn on Hydration Reminder to reveal Smart Mode (Fasting) and Interval. The interval choices are Every 2 hours, Every 3 hours and Every 4 hours.
Smart Mode uses reminders tied to a fast, with rotating messages. It follows its own fast-based timing rather than the selected interval. With Smart Mode off, the interval is used for the fixed reminders scheduled after a fast ends.
Changing the interval or turning hydration reminders on does not immediately rebuild a schedule already in progress. The current scheduling also excludes reminders outside 7 am–10 pm; this page doesn’t offer a custom waking-hours picker. Avoid relying on it as a continuously repeating, exact-time alarm.
These switches don’t log water or change your water goal. For that task, use the water-tracking guide. A notification is a prompt, not a measurement of how much water you need.
Pick a weekly recap day
Turn on Weekly Recap under Weekly Summary. Choose Sunday, Monday or Saturday, then select Time. Android abbreviates those days as Sun, Mon and Sat.
The recap is scheduled on the hour. If a time picker displays minutes, the setting still stores only the hour: choose 7:00 pm, for example, rather than expecting 7:30 pm. This differs from the meal reminder, which uses both hour and minute.
On iPhone, changes to the recap switch or day are picked up when the app next returns to the foreground. After adjusting them, go to your Home Screen and reopen Atomic Fast. Android’s notification settings update the daily/weekly schedules when you change a preference.
The recap notification invites you to review your progress in the app. It isn’t a personalized report delivered by email.
Illustrative settings
Two different
time controls.
Meal reminder
7:30 pm
Hour + minute
Daily setting
Weekly recap
7:00 pm
Whole hour
Sunday, Monday or Saturday
On iPhone, reopen the app after changing the weekly recap switch or day.
If a reminder is missing, late or unwanted
Start with the category and permission checks above. Then check the phone’s presentation controls. On iPhone, Focus and Scheduled Summary can affect when you see alerts; Apple’s notification settings guide explains those controls. On Android, check whether Atomic Fast or its notification categories are blocked or silent. Google’s guide notes that menu names and available options vary by device.
Return to Atomic Fast after changing permissions. Check that the chosen reminder applies to the current situation: a goal alert needs a goal time, while Smart Mode hydration is tied to a fast. Android uses inexact scheduling, so the selected time isn’t a promise of minute-perfect delivery.
If you want to silence all Atomic Fast notifications immediately, use the phone’s app notification controls. An in-app category change may leave a previously scheduled message pending, including a later fast-start nudge. Turning phone notifications off doesn’t delete your records, but it also silences alerts you may have wanted to keep.
If the issue continues, note the category, selected time, phone model and operating-system version when contacting support. Keep your existing fast and meal records intact.
Frequently asked questions
Do reminders require Atomic+? No. These notification settings are available without a subscription and don’t consume an AI allowance.
Does Fast Start Reminder start a fast automatically? No. It sends a prompt after a previous fast ends. It is separate from deliberately scheduling an individual fast, and it doesn’t create a recurring schedule.
Can I have a meal reminder at 7:30 pm and a recap at 7 pm? Yes. Meal reminders store hour and minute; the weekly recap stores a selected day and whole hour. Those are illustrative times, not recommended meal or fasting times.
Why did I miss a meal reminder after logging food? The app can cancel the pending meal reminder when it finds a meal logged today during a foreground check. Phone settings can also suppress its presentation. A missing notification doesn’t mean your meal was removed.
Will turning reminders off stop my fast? No. Notification preferences and the fasting record are separate. Open the timer if you want to end and save a fast.
Sources and product notes
Sources checked: November 6, 2026. Product information verified on the same date.
Product verification: We checked both platforms’ settings entry points, English labels, preference storage, permission actions, scheduling and foreground checks against current code and product documentation. No mobile-device walkthrough was performed. Detailed paths, revision and scheduling limitations are retained in the editorial review record.
- Apple: Change notification settings on iPhone — App permission, notification presentation, Focus and scheduled delivery. These phone controls are separate from Atomic Fast’s reminder categories.
- Google: Control notifications on Android — App and category controls, silent notifications and device-specific differences. It does not guarantee exact notification delivery.
Scope and limitations: The diagrams explain settings and use illustrative times; they are not app screenshots. Reminders do not establish a health need, measure a metabolic state or guarantee delivery. This is an operational guide, not a fasting or hydration prescription.
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