The basics

About Trace

What is Trace?

Trace is a glucose understanding platform designed to help people better understand the relationship between food, movement, sleep, routine, and glucose over time.

Rather than focusing purely on isolated readings or clinical targets, Trace looks at the bigger picture — helping you understand the shape, rhythm, and coherence of your glucose experience.

Trace is designed to feel calm, reflective, and personal. It is built around the idea that understanding your own patterns is often more valuable than comparing yourself to somebody else's averages.

Who is Trace for?

Trace is for people who want to better understand how their body responds to everyday life.

Many Trace users wear continuous glucose monitors (CGMs), including people living with diabetes, athletes, and people interested in metabolic health and performance.

Trace is intentionally designed to feel less clinical than traditional health software. It is built for real life — meals, routines, movement, sleep, habits, stress, travel, and everything in between. You do not need to be highly technical to use Trace.

What makes Trace different?

Most glucose apps focus heavily on numbers, alerts, averages, and isolated events. Trace focuses on patterns, context, and personal understanding.

Rather than comparing you endlessly against population norms, Trace is designed around a much simpler question:

How does your body tend to respond?

Trace learns from your own data over time — your meals, your routines, your glucose patterns, your responses. The goal is not to judge your glucose. The goal is to help you understand it.

What does Trace actually do?

Trace brings together live glucose, meals and food patterns, sleep, activity and workouts, long-term trends, personal food responses, and editorial-style daily interpretation.

It helps you see how your glucose behaves, how different foods affect you personally, how stable or reactive different days feel, and how routines influence your glucose over time. Over time, Trace builds a richer understanding of your personal glucose patterns and uses this to provide more contextual and individualised insight.

Do I need diabetes to use Trace?

No. While many Trace users live with diabetes and use CGM technology, Trace is fundamentally designed around glucose understanding rather than a specific diagnosis.

Some users are interested in metabolic health, athletic performance, meal response, energy stability, and long-term glucose patterns. Trace is designed to adapt to the individual using it.

Does Trace compare me to other people?

No. Trace is intentionally designed around personal context rather than population comparison. Your glucose patterns are influenced by your body, your lifestyle, your meals, your activity, your routines, your sleep, your stress, and your goals.

Trace focuses primarily on helping you understand your own patterns, trends, and responses over time. The philosophy is simple:

Better understanding yourself is usually more useful than comparing yourself to strangers.
Is Trace trying to "optimise" me?

No. Trace is not designed around perfection, punishment, or constant correction. It is designed to help you notice patterns, understand your responses, and build a clearer picture of how your body behaves over time.

We believe health software should support reflection and understanding — not constant pressure.

The framework

Glycemic Flow®

What is Glycemic Flow®?

Glycemic Flow® is Trace's way of describing the overall rhythm, stability, and coherence of glucose movement across the day.

Two days can produce similar averages and Time in Range scores while feeling completely different. One day may feel smooth, predictable, stable, and effortless — another may feel reactive, fragmented, difficult to settle, and mentally exhausting.

Glycemic Flow® helps make those differences visible. It is designed to capture the experience of glucose movement — not just isolated numbers.

Why does Glycemic Flow® matter?

Because most people living closely with glucose already know that glucose is about more than averages. A stable day often feels different from a day filled with rebounds, corrections, swings, and unpredictability — even if traditional metrics appear similar.

Glycemic Flow® helps you recognise smoother routines, disruptive patterns, foods that work well for you, and habits associated with more stable glucose experiences. Importantly, Trace focuses on your patterns over time — not whether you match somebody else's "perfect" graph.

Setup

Getting started

What do I need to use Trace?

To use Trace fully, you will need an iPhone, a compatible continuous glucose monitor (CGM), and a glucose data source.

Most users currently connect Trace using Zukka or Nightscout. Trace can also integrate with Apple Health to provide additional context around sleep, activity, and historical health data.

Do I need to use Zukka?

No. Trace supports multiple methods of receiving glucose data. However, Zukka currently provides one of the simplest and most reliable setup experiences for live glucose data and is the method we recommend for many users.

If you already use Nightscout, you can connect that directly instead.

How do I get my glucose data into Zukka?

For Dexcom users, setup is usually very straightforward:

  1. Install Zukka from the App Store.
  2. Open Zukka and complete the onboarding process.
  3. Connect Zukka to your Dexcom account or glucose source.
  4. Confirm that glucose readings are appearing inside Zukka.

Once Zukka is receiving glucose readings successfully, you are ready to connect it to Trace.

How do I connect Zukka to Trace?

Trace includes a guided setup process during onboarding. To connect Zukka:

  1. Open Trace and choose the Zukka setup option.
  2. Trace will generate your personal Trace connection details.
  3. Copy these details.
  4. Open Zukka and navigate to the Nightscout upload settings.
  5. Paste the Trace connection details into the Nightscout configuration fields.
  6. Enable uploads.

Once enabled, Zukka will begin securely forwarding glucose data to Trace automatically. Most users see glucose data appear in Trace within a few minutes.

I already use Nightscout. Can I connect that directly?

Yes. If you already use Nightscout, Trace can connect directly to your existing setup. During onboarding, simply choose the Nightscout option and enter your Nightscout URL and credentials.

Once connected, Trace will begin importing your glucose data automatically.

Does Trace replace Nightscout?

No. Many users continue using Nightscout alongside Trace. Nightscout remains an excellent platform for data collection, integration, and sharing. Trace focuses on interpretation, context, and understanding. The two often work very well together.

Features

What Trace can do

How does the Food Library work?

Trace includes a personal Food Library designed to become more useful over time. You can scan food barcodes, add foods manually, save favourite meals, store nutritional information, and record observations and notes.

But Trace goes further than simple food logging. Over time, Trace also learns how foods tend to affect you personally — which meals tend to feel stable, which foods tend to produce sharper responses, and how similar meals have affected your glucose previously. The Food Library becomes increasingly personalised the more you use it.

Can Trace estimate carbs from a photo?

Yes. Trace can analyse meal photos to help estimate carbohydrates and nutritional information. Trace can also use your previous food history and meal responses to provide more contextual meal interpretation and impact prediction.

For example, if you regularly eat similar meals, Trace may recognise patterns from your previous glucose responses and use them to help contextualise future meals. The goal is not perfect prediction — the goal is better personal understanding over time.

Does Trace learn from my meals and glucose responses?

Yes. One of the core ideas behind Trace is that your own historical responses are often more useful than generic population averages. Over time, Trace builds a richer picture of your meals, your glucose patterns, your routines, and your responses to similar foods. This allows Trace to provide increasingly personalised context based on your own history and patterns.

How do I share Trace Live with family or caregivers?

Trace Live allows selected people to securely view your glucose information in real time. You remain fully in control of who can access your data. You can invite family members, share with caregivers, and revoke access at any time. The setup process is designed to be simple for both sides.

Does Trace use AI?

Yes — but carefully. Trace uses intelligent interpretation systems to help identify patterns, interpret meals, recognise trends, and generate summaries.

However, Trace is intentionally designed to avoid alarmist language, judgement, overconfident conclusions, and generic "optimisation" advice. The purpose of AI in Trace is not to tell you who you should be. It is to help you better understand how you respond.

Does Trace work with Apple Watch?

Yes. Trace supports Apple Watch, including live glucose viewing, complications, widgets, and glanceable trends and patterns. Trace is designed to make important information quietly available when you need it.

Does Trace work on Android?

Trace is currently available for iPhone. We may explore Android support in the future.

Privacy & data

Your data

Is my data safe in Trace?

Protecting your data is extremely important to us. Trace is designed with privacy and security as core principles. Your data is encrypted during transmission, securely stored, never sold to advertisers, and controlled by you. You can manage connected services and sharing permissions at any time.

Access

Pricing & beta

How much does Trace cost?

Trace is available for £4.99 per month. Early beta users may receive access to discounted launch pricing.

How do I join the beta?

You can register your interest through the Trace website. Access is currently being expanded gradually as Trace continues to develop.

Ready to get
started?

Register your interest and we'll be in touch with early access details.

Join the beta →