The story behind Evenbeat

Built because
I needed it.

Evenbeat started with my own heart, and a simple question from my cardiologist that I couldn’t answer well.

One record. More context.

A clearer story
for the conversation.

What my devices recordedApple Watch & Kardia
What I noticedSymptoms, notes & context
What is still unknownGaps stay visible
The idea behind Evenbeat, illustrated.
Not an app screenshot or a medical record.

After several years of competitive cycling, I started noticing episodes of erratic heart rate, on the bike and off it. In January 2025 I was diagnosed with atrial fibrillation. My first ablation, in January 2026, didn’t resolve it, and another is planned.

Along the way I collected a lot of data. My Apple Watch recorded heart rate, ECGs and sleep. My Kardia added more ECGs. I kept notes on my phone. But when my cardiologist or electrophysiologist asked the simplest questions, the answers were scattered across apps, PDFs and my own memory.

Evenbeat is what I wanted in those appointments: one calm record of each day, with what my devices recorded and what I noticed, kept together and easy to bring to my care team. I’m building it for myself first, and for anyone else in the same spot.

I’m Josh Adam, a software developer with a background in biological science and computing. I studied microbiology, then computer science, and worked as a laboratory technician before moving into software. I’ve also spent many years as a personal trainer, and endurance sport has been a big part of my life.

Biology

Care with evidence.

Software

Tools to make sense of data.

Endurance sport

Context behind the numbers.

Biology taught me to be careful about what evidence can actually tell us. Software gave me the tools to work with large amounts of data. Training and racing taught me how much context matters when reading physiology.

Living with AFib made it personal.

03 / The choices

Built around the things
I wouldn’t compromise.

It stays on
your phone.

I didn’t want my own heart history on someone else’s server, so Evenbeat is designed with no account and no server.

How your privacy is protected

It shows.
It never guesses.

What you recorded, what a device observed and what the app counted stay clearly apart. A fast heart rate isn’t treated as AFib. Missing data stays missing.

It doesn’t diagnose, predict or recommend treatment. It helps the conversation with your care team.

Your record
comes first.

The app will be free to use, with Plus as a one-time purchase. Nothing that holds or shows your own record will be behind a paywall.

Still learning

A work in progress.
An open conversation.

Evenbeat is a work in progress, and the people using it will shape where it goes next. If something is confusing, missing or could be better, write to me. I read every message.

support@evenbeat.app

Josh