Offline-First Auto Sync

Your surveyors shouldn't have to think about internet. With onesurvey, they don't. Data saves instantly on-device and syncs automatically the moment signal returns.

The problem with other survey tools

Most survey tools are built for offices — they assume you'll have a stable internet connection when collecting data. In the real world, field teams work in areas with no signal, weak 2G connections, or intermittent Wi-Fi. When the connection drops mid-survey, data gets lost.

onesurvey is built differently. The internet is treated as optional — not required — at the point of data collection.

onesurvey has worked in areas with zero mobile signal. Responses collected offline are indistinguishable from those collected online once they sync.

How offline sync works

  • Survey definitions are pre-downloaded to the device before the surveyor goes to the field
  • When a response is submitted, it is immediately saved to an encrypted local database on the device
  • The surveyor can continue collecting responses — no internet needed
  • The moment any network is detected (Wi-Fi, mobile data, or 2G), all queued responses sync to the cloud automatically
  • Sync happens in the background — the surveyor doesn't need to do anything
  • Once confirmed as synced, responses appear instantly in your admin dashboard

Reliable in any condition

The sync process is designed to be resilient. If a sync attempt fails (for example, if signal is lost mid-upload), responses remain safely queued on the device and the sync retries automatically. No response is ever lost due to a failed upload attempt.

Media files — photos, videos, audio recordings — are also queued and uploaded automatically when connectivity returns. Large files are handled gracefully without blocking other responses from syncing.

Secure on-device storage

Responses stored locally are encrypted — they are never written to plain text on the device. Even if a device is lost or stolen, collected responses cannot be read without authenticated access to the app session.

Who benefits most

  • NGO field teams surveying in remote or rural areas
  • Healthcare workers in low-connectivity clinics or community settings
  • Market researchers conducting intercept surveys in underground locations or dense urban areas
  • Retail auditors working in basement stores or signal-blocked buildings
  • Political canvassers covering areas with inconsistent mobile coverage
  • Any team that cannot afford gaps in their data

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