IoT & BLE companion app development for smart devices
For connected hardware, the app is the product experience. We build mobile companion apps that pair with and control devices over Bluetooth Low Energy, WiFi and NFC — the way we built the Happiest Baby iOS app for SNOO, the FDA De Novo authorized smart bassinet, from zero to production.
What we build
- Real-time device control
- Device monitoring
- NFC device pairing
- Firmware update support
- Remote control over WiFi
- Tracking & trend analysis
Technologies
- Bluetooth Low Energy
- WiFi
- NFC
- Swift
Around the device
- Backend Development
- Admin Panels
- Content Delivery
Proof
- SNOO Smart Sleeper
- SNOObie Smart Soother
- 4-year partnership
Companion apps for connected hardware
For connected hardware, pairing has to just work, controls have to respond in real time, and the data a device collects has to become something people use every day. That takes mobile engineering, close coordination with the hardware team and product thinking in one team.
We architected and built the entire Happiest Baby iOS app from the ground up — the companion to SNOO Smart Sleeper, the world's first FDA De Novo authorized infant sleep system, and SNOObie Smart Soother — then kept developing it for four years. The same senior, long-term approach is what we bring to your device.
- Real-time device control: A full Bluetooth Low Energy communication protocol for controlling and monitoring SNOO and SNOObie in real time, including firmware update capabilities.
- Every connection path: WiFi-based remote control and NFC-enabled device pairing, with seamless connection management and routine programming for SNOObie.
- The data around the device: Sleep sessions, feeds, diaper changes, pumping and growth logged in one app, with data visualization and trend analysis.
- Relied on every night: A stable, secure app used daily by thousands of parents worldwide.
- QA in every sprint: Automated suites plus manual passes on physical devices — edge cases, accessibility and performance under load.
- Backends when the product needs them: Scalable backends, admin panels and real-time features with Node.js, TypeScript, Firebase, GraphQL and PostgreSQL.
Built from zero for Happiest Baby
IoT app questions, answered.
Which connectivity do you work with?
Bluetooth Low Energy, WiFi and NFC. The Happiest Baby app uses all three: BLE for real-time control and monitoring of SNOO and SNOObie, WiFi for remote control, and NFC for device pairing.
Native or Flutter for a device companion app?
We pick the right tool for your product, not our preference. Our production IoT work so far — the Happiest Baby app — is native iOS in Swift; we also build native Android in Kotlin and cross-platform Flutter apps, and we recommend the option that fits your hardware and roadmap during discovery.
Can you take a device app from idea to production?
Yes. We architected and developed the entire Happiest Baby iOS app from initial concept through App Store launch, then continued with feature development and maintenance for four years.
Do you build the backend for connected products too?
Yes. We build scalable backends, admin panels and real-time features with Node.js, TypeScript, Firebase, GraphQL and PostgreSQL. In the Happiest Baby app, an integrated content management system gives parents access to 1,000+ curated articles, videos and expert tips.