Fitness Band

TomTom Sports fitness band tracker is a product for daily fitness and health. Not only providing daily activity tracking and insights into sports activities but the team got challenged to deliver an optical HR and Bio-Impedance Analysis measurement for tracking body fat and muscle mass percentage on the wrist.


Key Challenges


Body composition guide, advising and couching peoples health - making it easy to understand and act on insight, not just numbers and graphs.


Looking at priorities and making product decisions - Sleep tracking? Smartphone notifications? Jewellery vs sport? Modular? Emerging competition? Automatic workout recognition? Hydration, HR variability.


Successfully taking body composition reading from the wrist, screen size dimensions, easy charging and making a modular device work within the TomTom Sports ecosystem.

Research Snippets

Target group

Our two main target groups are exercise enthusiasts and activity enhancers. Someone is looking to enhance their overall daily activity level.


  • I like to keep fit and lead a healthy lifestyle BUT
  • It is hard to know if I'm being active enough and making progress towards my health goals
  • Need a way of measuring what I am doing
  • I would like to set personal goals that can inspire me
  • Get practical and personalised advice on how to achieve them

Pain points

  • Lack of motivation to exercise/be more active
  • Lack of ability to track improvement, progress against goals
  • Current devices are either too ugly to wear all day or sacrifice functionality
  • (e.g. no screen)
  • No way to get practical, personalised advice on how to improve


The new personalised activity monitor that measures motivates and advises to help you progress to a fitter and healthier you.


Use cases

"Connecting to the device is very difficult."

"I wish to skip pairing in first-use and do it later (with features disable such as time) and be prompted to pair later without plugging in USB."

"I want to be able to pair my band with a different phone without being connected to the desktop."

"I don't understand navigation, and I can't find body composition mode."

"After a flat battery, I want to easily reconnect again with my phone (pairing isn't lost, only connection)" 

"I want (after first time being paired) to pair a different device to my phone without connecting it to the desktop (multiple devices via phone)"


Pairing Tips

The TomTom Sports mobile app offers additional support which consists of animated illustrations and pairing suggestions.


UI Explorations

The dimensions of the screen were always going to be an issue, and navigating between modes and features felt complicated, confusing and failed usability tests often. The addition of motion helped communicate flows and gave the product its personality. 


Prototypes & Testing

Prototypes and testing gave insight into the hardware limitation and validated designs. 85% of my hopes and dreams got delivered without compromising performance. :) 

Display Constraints

At 128x32 pixels, telling an informative story while using limited explanatory text and highlighting key features was at first daunting.

A core principle of simplicity and focusing on the essentials was vital. Unavoidable, but a primary goal was to reduce attention to the size of the overall display, this influenced transitions that expanded in and out within the selected screen - avoiding bleeding graphics and revealing the edges.


Quick Start

From experience working quick-start guides, the biggest challenge was the 70x70mm dimension and the business requirement of non-use of language and explanatory text. With the limited space, the illustrations must be focused on the essentials for single use.

On the TomTom touch, I focused on powering up, downloading the mobile app and an introduction to the device necessary gestures of swiping and button press.

First-time use

A successful Bluetooth connectivity depends on both hardware and software to work correctly, and when it fails, it is potentially a deal-breaker. With all our products, we strive for a seamless experience, but in the case of unhappy flows, various support is in place across multiple channels.

Once powered, the device immediately searches for a mobile phone, and we present the user a URL for failed connections.


Body Composition

The problem with conventional step counting devices is that they don't give an indication of the impact on the body, and for active users, it's not a useful indicator.

We wanted to go beyond standard activity tracking, being fit is more than a number on a scale, and body composition is an excellent indicator of fitness. 


Composition reading explorations.


Taking a reading and viewing on a mobile device.