Published by MasterCo

Report an issue with Smart Time Sync.
Send the customer service your feedback so they can fix your issue asap.



Email Support directly



Chat with our AppContacter AI Support


Why should I report an Issue with Smart Time Sync?

  1. AppContacter will directly Email your issue/feedback to an apps's customer service once you report an issue and with lots of issues reported, companies will definitely listen to you.
  2. Pulling issues faced by users like you is a good way to draw attention of MasterCo to your problem using the strength of crowds.
  3. Importantly, customers can learn from other customers in case the issue is a common problem that has been solved before.
contact Smart Time Sync image 1 contact Smart Time Sync image 2

About Smart Time Sync

1. Check it with atomic clock at GPS satellites or Internet (NTP/HTTP) by Smart Time Sync! - Background passive time sync with GPS. - Very small memory footprint.

2. If you want the app to detect and set time zone, just click on timezone field in the app and follow guide or install "Smart Time Sync TZ data".

3. If your device is not rooted, you can sync in manual mode only.

4. Is time at your android device correct?

5. If the app helps you and you love it, please rate it 5 stars only - 4 stars and less is a negative rating.

6. In paid version even smaller - less 100Kb.

7. If the app doesn't work for you, please email me.

8. I can't make the app better if you just leave a comment.

9. In free version background sync feature is seven days limited.

Smart Time Sync Customer Insights

1. Also, I wish the atomic time display was in a larger typeface so I could see it more easily from a distance when setting the time on other devices.Strange. My Dolamee device running Android 6.0.1 was off by 58 minutes no matter what I tried.

2. Thus I was able to add the correction to shift the date from incorrect (old gps) reading "7th of october 2000" to the correct one "23th of may 2020".Great app but has one annoying feature: the time offset is the wrong way round.

3. Same was true for another app in Play Store so I resorted to ClockSync which I couldn't find in Play Store and it worked.Used it on my tablet to sync the system time with bluetooth gps receiver via the app "bluetooth gps".

4. It must be very easy to fix this error.It shows the actual time from an ntp server and it shows the system time but it does not sync the latter to the former when I hit the sync button.

5. Any other app for synching clock with gps couldn't take the correct time if at all from the "mock location" provided by "bluetooth gps" app.

6. issues) like stand-alone dedicated GPS master clocks do so that the time won't have any fraction of second delay? Just curious if this could be implemented on android.

7. Thanks for a great app! 👍I want to know any time difference between my connected cell tower vs more accurate NTP sources, because AT&T forces time (if un-rooted) per its tower.

8. Also, for anyone wondering, the beeping you hear when you choose to set the time manually is so that you can tap on OK as close to the second mark as possible.

9. so I downloaded this app which could recognize thw time was off but couldn't correct the time even though it was given root access.

10. Fixed now" but the time display still shows a +1.1 second offset.

11. So if the phone's time (device) is fast compared with network time (source) then a minus offset is displayed rather than a positive one.

Steps to Troubleshoot & Fix Smart Time Sync Issues

1. Fix Smart Time Sync Not Working/Crashes/Errors/Unresponsive & Black/White screen:


  1. Restart Smart Time Sync: Restarting the app will resolve most errors.
  2. Update the Smart Time Sync App. Here is how:
    1. On Android goto PlayStore » Search for "Smart Time Sync" » Open Smart Time Sync » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for Smart Time Sync » click "UPDATE".
  3. Clear Smart Time Sync app cache: Clearing cached data will force your app to retrieve the latest data directly from Smart Time Sync servers.
    1. On Android, goto Settings » Apps » Select "Smart Time Sync" » click Storage » click "Clear Cache".
  4. Check Smart Time Sync app permissions. If any of these permissions required to use your device's features are disenabled, Smart Time Sync might not work.
  5. Uninstall and reinstall Smart Time Sync. If nothing else has worked, completely uninstall Smart Time Sync then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing Smart Time Sync not working


2. Fix Smart Time Sync Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make Smart Time Sync be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to Smart Time Sync not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, Smart Time Sync may not be able to connect to the Internet when running in the background.

Reported Issues