A plan that moves with you.
Your training plan adjusts when life happens — a missed run, a rough week, a cold you couldn't shake. You don't start over. You keep going.
Some runners have a coach.
Some have a club.
Solo runners have Pulsar.
You're already asking ChatGPT about your knee pain. Pulsar is ChatGPT — except it actually knows you're 7 weeks out from your first half marathon.
You've got a plan. You don't have anyone to ask.
You finish a long run and your knee feels weird. You're not sure if that's "push through it" weird or "stop training" weird.
You miss two days because work got crazy, and suddenly the whole plan feels broken. You don't know if you should skip the workouts, shift them, or start over.
You're 8 weeks out from your first half and you still don't know what to eat the morning of. Or what to wear if it rains. Or whether the shoes you have are good enough.
You google it. You ask ChatGPT. You watch a YouTube video from a guy who's clearly run 40 marathons and makes it sound obvious.
It's not obvious. Not the first time.
What Pulsar is
A real running coach in your pocket — not another step counter.
An AI coach you can talk to.
Ask it anything a friend who ran marathons would know. "Is this knee pain normal?" "What do I eat before a 16-miler?" "I felt awful on Tuesday, should I worry?" It knows your plan, your last run, and how far out your race is.
Check-ins that get smarter.
Every run ends with a 30-second check-in. Pulsar learns what "a hard day" looks like for you specifically, and uses it to adjust next week.
You're not the only one feeling this.
These are real posts from real runners. We didn't write them.
"I don't have a coach, I don't have a running club, I don't really have any running friends. I just have the internet and a plan I'm not sure I'm doing right."
— Seabreeze12390, r/running
"I've been using ChatGPT to help me build out a training plan and honestly it's been better than anything else I've tried."
— js247, r/running
"I'm terrified of being the slowest one out there. I keep thinking about finishing last, or finishing when they've already started packing up the finish line."
— r/XXRunning, half marathon nerves thread
"I wish there was a pause button for when you're sick or travelling. Rearranging workouts after missing a couple of days is a nightmare."
— fluffycandypanda, r/runna
Ready when you are.
7-day free trial. iPhone only. Cancel anytime in the App Store.
From the founder
I'm Dzhavid. I've run three marathons. I trained for all of them alone.
The hardest part wasn't the long runs. It was the questions nobody was around to answer — whether my knee was a problem or just a Tuesday, whether skipping a workout meant my whole plan was broken, whether I'd actually be able to finish.
I spent a lot of nights asking ChatGPT. It helped. But it didn't know me, and it didn't know my plan.
Pulsar is what I wish I'd had. If you're training for your first big race and you're doing it alone, I built this for you.
— Dzhavid, founder
Got a question or feedback? hello@pulsar.coach — I read every email.