Czech Bluetooth tech among TIME’s Best Inventions 2025

When TIME Magazine selected Evenflo’s Revolve180 LiteMax NXT as one of its Best Inventions of 2025, it wasn’t just a win for parents, it was also a proud moment for Czech developers. Behind the smart handle that soothes babies with sound and light is a full-fledged IoT app built by Cookielab.

And while the soothing sounds were the highlight for parents, our biggest challenge played out on the SensorySoothe’s¹ Bluetooth Low Energy (BLE) level.

From pairing pain to a frictionless connection

Every parent knows how inconvenient Bluetooth setup is during installation. After the first pairing, we solved tough technical challenges so that future connections are automatic - no more manual pairing needed for families.

On Android, this was possible through stable MAC address access, but iOS required an entirely new approach. We designed a custom BLE metadata matcher, which takes information from the Bluetooth advertising packets, cross-references it with backend data, and identifies the device belonging to each family.

The result

➡️ Multi-user access per family
➡️ Reliable auto-connect across platforms
➡️ Zero manual pairing for family members

Cross-platform BLE sync

To make this logic consistent, we reworked our domain synchronization layer to keep iOS, Android, and backend states in sync.That meant rebuilding parts of the Bluetooth service layer to handle both Apple’s stricter BLE privacy and Android’s extended metadata availability.

Technically, this required:

• Asynchronous scanning and metadata caching
• Backend correlation and device token matching
• Secure binding between device UUIDs and user accounts
• Fail-safe reconnection for connection loss events

The same engine now allows Evenflo to extend their BLE platform across future smart baby products.

Hardware + Software = TIME award

Building SensorySoothe was about more than just Bluetooth, it was about connecting parents, children, and technology in a seamless way. So when TIME Magazine recognized Evenflo LiteMax NXT with SensorySoothe among the Best Inventions of 2025, it validated every sleepless night spent debugging BLE connections in our Prague office.

“Working with Evenflo is the perfect combination of technical challenge and meaningful product for us. Developing an app that helps parents keep their children safe motivated us to go deeper, both in UX and technology itself.” — Martin Homolka, Co-founder, Cookielab

Tech Stack

iOS & Android: BLE (Bluetooth Low Energy), Kotlin Coroutines, WorkManager, GraphQL, Protobuf, OAuth, Firebase, DataStore, Koin, Material Design.Core feature: Cross-platform BLE auto-recognition + family sharing logic.

American hardware. Czech software. Global success.

👉 Read the full case study on Evenflo SensorySoothe.

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¹SensorySoothe is a smart device integrated into Evenflo’s LiteMax NXT seat.