Run with your Apple Watch
Record runs the way you already do. Any app that saves workouts to Apple Health works.
Running coach for iPhone, Apple Watch and web
Every run makes the next one smarter.
RunBuddy reads the runs your Apple Watch already records — heart rate, sleep, splits — builds a plan around them and sends each session to your wrist. You just go out and run.
Free to start. No new tracker, no extra recording app.
Tempo run · synced from Apple Health
Riverside loop
4:12/km
Distance
8.4 km
Cadence
178 spm
Zone
Z3 tempo
Avg heart rate
164bpm
Split 6
4:09−0:03 vs target
Readiness 87
Readiness
Primed to train
HRV above your 7-day baseline
“Even splits, and heart rate held in Z3. Thursday’s session stays as planned.”
Apple HealthHRVSleepHeart-rate zonesTraining loadGrade-adjusted paceResting HRApple Watch sessions
How it works
Keep the watch you have. Add a coach.
RunBuddy reads Apple Health
Workouts, heart rate, HRV and sleep sync in the background. The coach uses them to set the next sessions.
Start the session on your wrist
Your plan syncs to the Workout app with warm-up, intervals and pace targets. Apple's own app guides you through it, so your battery lasts and nothing needs updating.
01 — The coach
A coach that read
every run you did.
Ask anything: why your legs felt heavy, whether to race on Sunday, what to do with a missed long run. Every answer comes from your own data, not a generic plan.
Grounded
Looks up your splits, zones and sleep before it answers.
On your side
Your wishes win, unless safety is at stake.
Coach
Online · knows all your runs
My legs felt dead on today’s easy run. Should I still do intervals tomorrow?
Your pace was normal, but heart rate sat 9 bpm above your last three easy runs, and you slept 5 h 40 min. That’s fatigue, not lost fitness.
I’d move 6 × 800 m to Thursday and put a 30-minute recovery run tomorrow.
Wed · 30′ recoveryThu · 6 × 800 m
Perfect, thanks coach.
Sleep in if you can. I’ll check your HRV again in the morning.
02 — Adapts after every run
Your plan bends.
It never breaks.
Bad night? Hot day? Missed a session? With Coach Pro the week reshuffles so the key sessions still land.
Tuesday 06:12 — HRV 18% below baseline. Intervals moved to Thursday.
MON
Rest day
Mobility 15′
TUE
WED
Easy
8 km · Z2
THU
FRI
Rest day
Strength 20′
SAT
Easy
6 km · strides
SUN
Long run
22 km · Z2
03 — Intensity
Easy days easy.
Hard days hard.
Most runners drift into a grey middle zone that builds fatigue but not fitness. RunBuddy keeps roughly four of every five runs easy, so the hard ones count.
Z2 · conversational · 138 bpm Z5 · last rep · 182 bpm
Z1Z2Z3Z4Z5
EasyHard
8020
04 — Your race
Pick a distance.
Watch the plan build.
12 weeks
Example plan shape. Yours is built from your own history.
BaseBuildRecovery weekTaper
Key session 2 × 5 km at half-marathon pace
Build my Half marathon planEverything your watch records. Finally put to work.
Sessions on your watch
Your plan syncs to the Apple Watch Workout app with its intervals and paces. No extra app draining your battery.
Fitness and fatigue
See load build week by week, and get warned before a jump in distance turns into an injury.
Remembers what you tell it
Injuries, busy weeks, the days you can't run. You can see and edit everything it remembers.
Hill-aware pacing
Grade-adjusted pace means a slow climb still counts as the effort it was.
Nothing new to wear
Data comes from Apple Health. No extra tracker, no second recording app.
Your data, your server
Use RunBuddy Cloud or run the server yourself. Export or delete your data at any time.
Ask your coach in Claude
Free on every plan: connect the MCP server to ask Claude about your runs, plan and goals, or build on the open API.
Compared
How RunBuddy differs.
Runna is built around set training plans. Strava is built around recording and sharing. RunBuddy is built around a coach you can talk to.
| Feature | RunBuddy | Runna | Strava |
|---|---|---|---|
| Coach you can chat with | Yes | No | No |
| Plan adapts to your runs | After every run | Yes | No |
| Records runs | Uses Apple Health | Own app | Own app |
| Sessions on Apple Watch | Yes | Yes | No |
| Remembers injuries and schedule | Yes, editable | Training days only | No |
| Use in Claude (MCP) and open API | Yes, free | No | Paid subscription |
| Free tier | Yes | Trial only | Yes |
Pricing
Start free.
Upgrade for the full coach.
Free
€0
- Apple Health sync
- Training plan for your goal
- Sessions sent to Apple Watch
- Stats, records and heatmap
- Basic coach chat
- Use RunBuddy in Claude (MCP)
- Open API for your own tools
Coach Pro
€7.99/ month
- Everything in Free
- Plan adapts after every run
- Coach memory you can edit
- Choose your coach's personality
FAQ
Questions, answered.
All questions →What is RunBuddy?
A running coach for iPhone, Apple Watch and web. It reads the runs your watch records, builds a plan around them and adapts it after every run.
Which watches work?
Apple Watch today. Garmin support is planned.
Can I use it without a watch?
Yes. Any app that saves runs to Apple Health works, including phone-only recording. Readiness needs overnight HRV and resting HR, so it works best with a watch.
Can I train for a specific race date?
Yes. Enter the date and the plan counts back from it through base, build, peak and taper.
Will it override what I want?
No. Your wishes win unless safety is at stake.
Is there a free version, and what does Pro add?
Free includes Apple Health sync, a training plan, sessions on your watch, stats, basic coach chat, and RunBuddy in Claude (MCP) plus the open API. Coach Pro (€7.99 a month) adds a plan that adapts after every run, coach memory you can edit, and coach personalities.
Lace up.
We’ll do the math.
Connect Apple Health, choose a goal, and your first week is ready in two minutes.