Smart devices control app
A BLE-connected mobile app for technicians operating and maintaining commercial hardware, built to keep UX simple while handling dense real-time controls and data.
01 The Challenge
Enabling high-throughput data transfer and firmware updates (OTA) over BLE under noisy industrial conditions, with shifting hardware protocols and strict offline requirements for on-site technicians.
02 Our Solution
Developed an offline-first Flutter application featuring custom BLE packetization, reliable chunk-based OTA firmware transfer with automatic retry logic, and checksum verification. Designed intuitive user interfaces for real-time sensor charts and calibration controls.
Outcome & Delivery Value
“Released a production app used by service engineers across multiple markets.”
Project Profile
Work Highlights
- ✓ Parallel software and hardware delivery with evolving BLE protocol
- ✓ Reliable OTA firmware transfer with chunking, retries, and integrity checks
- ✓ Offline-first workflows with sync when connectivity returns
- ✓ Team at peak: 2 mobile engineers
Tech Stack
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