Digital Health built on AI and Neuroscience
At Wist, we're redefining diet tracking by blending cutting-edge technology with real-life experience
It started with diabetes
During the pandemic, we were supporting diabetic family members who were self-isolating. To help them manage their medication, we asked them to track what they ate.
But the manual diaries they kept were so inaccurate, they were practically useless. We knew we had to find a better way.
Born of need
We were surprised (and honestly, a bit dismayed) by how ineffective most diet tracking solutions were. So we decided to build the app our families needed: a simple, chat-based interface where they could message or photograph their meals.
With AI, we could instantly extract the nutrition. It worked brilliantly.
Loved by friends
Once we had a rough version of the app, our friends were eager to use it—whether they were trying to lose weight, build muscle, improve wellness, support fertility, or just eat better.
They loved the early prototype so much that we knew we had to build it properly.
Built in a pub
We were joined by two tremendous machine learning specialists, Harry and Ollie, and together we set about turning Wist into a real product.
On an extremely tight budget, we spent our first two years working from a pub that offered cheap co-working space. We literally built a great health app from a pub.
Designed to be fun
It was while we sat among people socialising and enjoying themselves that we realised how important it was for the app to feel fun, not clinical.
So we started collaborating with Cassandra, a neuroscientist from the University of Exeter, to explore what would truly motivate people to log their meals and make healthier choices. The answer quickly became clear: it was all about dopamine balance and designing Wist to feel rewarding.
Meet the Team
Aman Grewal
Director & Co-Founder
Aman has 21 years experience building data-intensive SaaS applications, specialising in user interaction and data storage (SQL and no-SQL). He founded WorkplaceDynamics (now Energage) which was one of the first B corporations. He was also part of the leadership team at AssetLogic. He now focuses on how to build insightful user-centric apps.
Jon Hall
Director & Co-Founder
Jon is an LLM expert and systems architect with 24 years’ experience of building systems for an array of companies. It was his personal endeavor, crafting tools to support his parents’ diabetes journey, that honed his interest in healthtech. Today, he’s all in on creating pragmatic tech tools that serve real-world needs.
Harry Neal
AI/ML Specialist
Leveraging a 10-year background in large-scale geophysical data processing, Harry now applies his expertise in automation and data systems to generative AI. At Wist, he has architected the proprietary agentic API, data pipelines, and databases that power the app. He specialises in the practical deployment of AI, from model fine-tuning and inference optimisation to building complex, tool-integrated agentic systems.
Oliver Leach
AI/ML Specialist
Building on his background in cheminformatics, Oliver has transitioned to focus exclusively on machine learning in the generative AI space. Driven by a passion for applying AI to improve health outcomes, he has developed innovative tools such as a heart disease risk assessment app. At Wist, Oliver is spearheading the development of our agentic AI system, refining data structures to deliver clean, precise context and elevate the overall user experience.
Our Mission
At Wist, our goal is straightforward: help everyone make better choices for a healthier world. We’re blending personal insights with technical expertise to bring a fresh approach to diet tracking.