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Syncing Across Devices

How your data reaches every device, and which settings stay on one phone

3 min readUpdated Sep 3, 2026

Sign in anywhere and your data is there. It is worth knowing why, because it

explains what can and cannot go wrong.

There is nothing to sync

ClapDiet keeps no separate copy of your data on your phone. Every screen reads

from your account when you open it, and every log writes straight to your

account as you save it. Your phone is a window onto one set of records rather

than a second set that has to be reconciled with the first.

So there is no sync to wait for, no sync to trigger and no sync to go wrong. A

meal logged on your phone is already on your account by the time the screen

confirms it, and the web shows it the next time you load the page.

The trade is that a screen needs a connection to load. See

Offline Mode for exactly how much of the app

survives without one.

What lives on your account

These follow you to every device you sign in on:

  • Food logs, hydration and weight
  • Lab panels and their results
  • Health conditions, medications, allergies and dietary preferences
  • Favourites and collections
  • Your plan and your diet mode
  • Streaks, points and achievements
  • Your language
  • Units and formats: metric or imperial, glucose units, date order and whether
  • the clock is 12-hour or 24-hour

  • Notification preferences: email, the weekly summary, quiet hours and critical
  • alerts

    What stays on the phone you set it on

    These are deliberately per-device, because the right answer differs by device:

  • Theme — the app follows each phone's own light and dark setting
  • Accessibility — larger text, higher contrast, reduced motion, haptics
  • Biometric sign-in — tied to the Face ID or fingerprint on that handset
  • Whether this handset receives push at all — separate from the
  • account-level notification preferences above, so you can silence one phone

    without silencing the others

    Set them again on a new device.

    Refreshing a screen

    Screens load fresh when you open them, and hold what they loaded for a few

    minutes so that moving back and forth does not re-fetch constantly. If you have

    changed something elsewhere and want to see it immediately, pull down on your

    home screen, your labs or your insights.

    Two devices at once

    Because there is only ever one copy, the last save wins. If you log the same

    breakfast on your phone and on the web within a minute of each other, you will

    have two entries rather than one merged entry — delete the one you do not want.

    You will never be asked to resolve a conflict, because there is no second copy

    to conflict with.

    When something is missing

  • Check you are signed in to the same account. This is the common one — a
  • second account made with a Google sign-in looks identical from the outside.

  • Pull down to refresh.
  • Check the date you are looking at.
  • If it is still missing, contact us rather than re-entering it.
  • We would rather find out where it went.

    Data usage

    Everyday use is light: text records, a few kilobytes at a time. The exceptions

    are uploads, where you are sending a file — a lab PDF or a photo of a report is

    typically a few megabytes. Do those on WiFi if you are watching your data.


    Related Articles:
  • Offline Mode
  • Troubleshooting Sync
  • Tagssyncdevicesmultipleclouddata
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