idea → development → success (short claim)
The latest technology project by Evenflo – SensorySoothe – was by far the loudest in Cookielab’s history. Not because of heated coding debates, but because of testing. Our office was suddenly flooded with nature sounds and children’s songs. And the result? A mobile app for the American child car seat manufacturer Evenflo that makes life easier for the parents of even the youngest passengers.
“Cookielab has been our technical partner for the last 7 years and was a critical team member for bringing SensorySoothe to life. Their deep expertise and professional approach allowed us to integrate a complex feature set, while still ensuring the product launch was smooth and successful. We appreciate their rigorous testing and attention to detail.”
Technology Product Manager, Evenflo
Evenflo, a subsidiary of Goodbaby International, boasts over 100 years of experience in producing strollers, car seats and other juvenile gear. Recently, their product line has been undergoing a smart transformation — and our job was to deliver a mobile application that connects their new devices to smartphones.
Our collaboration with Evenflo started with the development of the mobile app for their SensorSafe technology. This smart chest clip most notably detects when a child is accidentally unbuckled or left alone in the car — allowing our app to alert parents accordingly.
In 2024, we began work on a new version of the app that supports their SensorySoothe line of products. SensorySoothe technology is integrates lights and sounds into that handle of their newest infant car seat, the LiteMax NXT, and allows caregivers to control light and sound scenes to help soothe babies during the ride.
What started as an app for a simple Bluetooth sensor has now evolved into a complex IoT mobile application. Our goal was to deliver a user-friendly and stable app that allows access to SensorSafe and SensorySoothe across devices, regardless of platform, and sends critical notifications even when the Bluetooth signal is lost.
Throughout development, we faced several technical challenges – from Bluetooth connectivity to multi-device compatibility. Testing took place in our office using a variety of phone models, but most importantly, it was conducted with users both in the U.S. and Europe. Mobile devices and cars behave differently across continents, and we needed to be sure the app works consistently everywhere.
We also had a lot of fun building some of the more entertaining features of the app. For example, we created an intuitive media player, allowing parents to control sound and light scenes directly from the app. Throughout development, we worked closely with the U.S.-based hardware team, fine-tuning the app and Bluetooth behavior while the hardware was still in progress.
Evenflo plans to expand its smart device lineup in the coming years. In parallel with building new features, we began restructuring the existing codebase to better prepare for future developments. We’re excited to find out what we’ll be building and testing next!
Evenflo’s latest project – SensorySoothe – was undoubtedly the loudest in Cookielab’s history. Not because of disagreements over code, but because of testing. Our office was perpetually flooded with nature sounds and Children’s. And the result? A mobile app for the American child car seat manufacturer Evenflo that makes life easier for parents of even the youngest child passengers.
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 terms of UX and the technology itself. The project grew from a simple sensor into a full-fledged IoT platform that we can now continue to develop.
Co-Founder, Cookielab
Evenflo, a subsidiary of Goodbaby International, has more than 100 years of experience in producing strollers, car seats, and other gear for children and parents. Recently, their products have been undergoing a smart transformation — and our job was to deliver a mobile app that connects their new hardware to smartphones.
Our collaboration with Evenflo started with the development of the mobile app for their SensorSafe technology. This smart chest clip most notably detects when a child is accidentally unbuckled or left alone in the car — allowing our app to alert parents accordingly.
In 2024, we began work on a new version of the app that supports their SensorySoothe line of products. SensorySoothe technology is integrates lights and sounds into that handle of their newest infant car seat, the LiteMax NXT, and allows caregivers to control light and sound scenes to help soothe babies during the ride.
From a simple Bluetooth sensor app, we moved on to a full-fledged IoT mobile application. Our goal was to deliver a user-friendly and stable app that allows the whole family to access SensorySoothe regardless of device type and sends critical notifications even in case of connection loss.
One of the main technical challenges was enabling SensorySoothe to connect automatically to the correct family account without requiring each user to manually pair it.
While this is relatively simple on Android thanks to access to MAC addresses, iOS required a different approach. We designed an automatic connection to a custom device identification mechanism that uses metadata from BLE peripheral scans.
These are then matched with backend data, allowing the app to recognize which family the device belongs to. To ensure this feature also worked on Android, we had to rework our domain logic originally developed for SensorSafe to sync with both the backend and the iOS app.
We also really enjoyed building some of the more entertaining features of the app. For example, we integrated an intuitive media player that allows parents to control preset light and sound scenes.
Throughout the process, we worked closely with the hardware team in the U.S., fine-tuning app and Bluetooth behavior even while the hardware was still in development — which was a huge advantage. Testing took place in our office across various phone models and, most importantly, with users in both the U.S. and Europe. Mobile phones and cars behave slightly differently across continents, and we needed to ensure consistent functionality everywhere.
Evenflo plans to expand its smart device lineup in the coming years. In parallel with new feature development, we began restructuring the existing codebase to better adapt to future requirements. We’re already excited to see what else we’ll get to build and test!
