# Best Way to Handle Offline Data Sync with Local Storage?

**URL:** https://community.thunkable.com/t/best-way-to-handle-offline-data-sync-with-local-storage/4015518
**Category:** Web API's
**Created:** [July 21, 2025, 10:31pm UTC](https://community.thunkable.com/t/best-way-to-handle-offline-data-sync-with-local-storage/4015518 "2025-07-21T22:31:21Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![ziddihoon228x2r5m3](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ziddihoon228x2r5m3/32/208170_2.png) [@ziddihoon228x2r5m3](https://community.thunkable.com/u/ziddihoon228x2r5m3)
#### Post date: [July 21, 2025, 10:31pm UTC](https://community.thunkable.com/t/best-way-to-handle-offline-data-sync-with-local-storage/4015518/1 "2025-07-21T22:31:21Z")

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Hey Thunkers

I’m building an app that needs to work offline (sometimes in low-signal areas), and I’m using Local Storage to save data temporarily. What I’d like to do is automatically sync the saved data to a cloud DB (like Firebase or Airtable) once the device comes back online.

Has anyone built a reliable flow for this? I’m not sure how to check for connectivity changes in a clean way. Would love to hear your approach—or if there’s a hidden block I missed [😅](https://calculadoradehoras.io/)

Thanks in advance!

Jhonn Mick

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### Author: ![steve\_synopsis](https://avatars.discourse-cdn.com/v4/letter/s/48db29/32.png) [@steve\_synopsis](https://community.thunkable.com/u/steve_synopsis)
#### Post date: [July 24, 2025, 5:30pm UTC](https://community.thunkable.com/t/best-way-to-handle-offline-data-sync-with-local-storage/4015518/2 "2025-07-24T17:30:58Z")

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I asked a similar question in this [thread](https://community.thunkable.com/t/best-approach-to-run-offline-but-then-update-date-when-back-online/2922775)

Maybe this will help. 🤔