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myPotential
Private beta for iPhone

Today's session,
ready when you are.

myPotential turns the CHOP Exercise Program into one calm screen a day. It includes heart-rate pacing cues and leaves the pressure out.

Join the private beta

Currently in private beta. I'll be in touch about trying it. No newsletter, no marketing.
iPhone Apple Watch AirPods Pro Bluetooth HR straps
Today's session, ready when you are — open the app and see what's next, with Apple Watch support. Session history stays on your iPhone.

Based on the CHOP Exercise Program Apple Watch · AirPods Pro · Bluetooth straps On device. Always.
How it works

Three things. That's the whole app.

Calm, low-friction, and quiet on a low day. Nothing here is gamified.

01

Today's session, decided for you.

Open the app and it tells you what to do: which week, which day, and which kind. You do not need spreadsheets, guesswork, or maths.
02

Stay in zone, in real time.

Heart rate comes from Apple Watch, AirPods Pro, or a Bluetooth strap. A gentle haptic and voice cue tells you when you drift. It is nothing louder than that.
03

Strength, with the equipment you have.

Exercise images, reps, sets, and weight logging work at the gym or at home. The program adapts to your context, not the other way round.

"It's a wonderful app."

— Anonymous

The CHOP Exercise Program

The program is the thing. The app just gets out of the way.

The CHOP Exercise Program is an 8-month, 242-session graduated exercise program developed at the Children's Hospital of Philadelphia. It's a long, detailed PDF, with heart-rate targets set as a percentage of your max that you'd otherwise have to calculate by hand. The app turns it into one session at a time, with the heart-rate zones already worked out.

Read the original program (PDF) → (opens in a new tab)

"Thanks for creating this. It's a great resource, especially for people beginning the CHOP exercise program on their own."

— Anonymous
Who it's for

For you, or someone close to you.

For your own sessions

You won't be told to "just push through."

  • One session a day, ready when you wake up.
  • Out of zone? You get a quiet buzz, not a klaxon.
  • If you miss a day, makeup logic handles it without judgement.
  • Mood and notes for the days that need them.
For someone you're supporting

The printout, finally usable.

  • 242 sessions tracked for you.
  • The app calculates heart-rate zones for you.
  • You get no nags or streaks, and no pressure to "stay on track."
  • Their data stays on their phone and is never sent anywhere.
The story

I built it for one person. I shared it in case it helps someone else.

My daughter has POTS. Research pointed us to the CHOP Modified Dallas exercise program, an approach with real evidence behind it, the kind of thing that might actually help. The catch: it comes as a 30-page PDF. Eight months of sessions. Heart-rate zones to calculate by hand. You're on your own to figure it out and stay on track.

I'm a developer. So I built her something quieter: the same program, one screen at a time. No spreadsheet, no mental arithmetic, no wondering what's next. It tells you what to do, keeps you in zone, and marks it done.

I put it on the App Store because plenty of people are working from that PDF. If you're one of them, or helping someone who is, maybe it can help.

John Woffindin
Privacy

Your data is yours. It stays on your phone.

No accounts. No server, with one small exception. The app itself never sends us anything. The answer to "how secure is our data?" is "what data?" There is nothing to leak, lose, or sell because we never receive any of it. The waitlist form does send your email to us. Nothing else about you or your visit is collected or sent anywhere.

No accounts.

No sign-up, no password, no email needed to use the app.

No health data on our servers.

There is nothing to breach because your health data is never sent anywhere.

On device only.

Profile, sessions, and heart rate are all stored locally and encrypted by iOS.

HealthKit native.

Heart rate and workouts flow through HealthKit, under Apple's own privacy framework.