// Case study
React Native field app with offline sync and conflict resolution
Inspectors in low-connectivity plants needed reliable capture, SQLite queue, background upload, and admin reconciliation API.
A facilities management company with 180 inspectors across manufacturing sites with patchy 4G. A prior vendor build lost data on silent upload failures; the replacement required offline capture, ERP export, and MDM deployment on corporate Android.
99.2%
Submissions synced (24h)
Background upload queue
180
Inspector fleet
Staged rollout to full fleet
25MB
Photo capture limit
With client-side JPEG cap
4
Pilot plants
Paper process eliminated before expansion
Delivered by Akshay Bilagi · Published September 2, 2025 · 10 min read
Client context
A facilities management company, 180 inspectors across manufacturing sites with patchy 4G, replaced paper checklists with a React Native app. Prior vendor build lost data when uploads failed silently.
The challenge
Requirements: offline form capture with photos up to 25MB; digital signatures; supervisor approval; ERP export by end of day; MDM deployment on corporate Android fleet.
Problems faced: Android Doze killed background sync until whitelisted; iOS photo HEIC conversion inflated server storage, client-side JPEG cap added; conflict when supervisor edited same checklist online while inspector offline, last-write-wins with audit diff surfaced in admin UI.
Technical implementation
Architecture: Expo prebuild with custom native modules; WatermelonDB for offline storage; background fetch upload queue with exponential backoff; presigned S3 URLs; Node API with idempotency keys on submission IDs.
Release: staged rollout via Play Console internal track; Crashlytics + Sentry; OTA updates for JS-only fixes.
Results & impact
Outcome: 99.2% submissions synced within 24 hours; paper process eliminated at four pilot plants; expansion to full fleet over three months. Client anonymized, facilities management operator.
// Related services
CIN
AAU-8582
Startup India
DIPP83124
Founded
November 2020
Office
Residency Rd, Bengaluru, India
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