Capstan Get early access
AI-coached training log · iOS & Android

Steady effort,
made visible.

Capstan turns every session — lifts, runs, rounds, laps — into one clear line of progress. With a coach that actually remembers what you did last week.

Almost there — check your inbox and confirm your email to lock in your spot.

Free while in beta.  We'll email to confirm — then your invite when a spot opens.

App Store · soon Google Play · soon
Capstan Today screen — a squat day with 5/3/1 working sets

The loop

Log it. Ask it. Watch it compound.

Three moves, every session. Fast enough to do between sets, honest enough to trust for a year.

01 / LOG

Under 30 seconds

Open, enter the set, done. 5/3/1, linear progression, intervals, or freestyle — Capstan already knows the targets, so you just record what you actually did.

02 / COACH

It knows your history

Ask anything. The coach reads your real training — maxes, recent sessions, how you're trending — and answers like it's been spotting you the whole time.

03 / CHART

Your work draws itself

Estimated 1RM, 5k splits, a 52-week block of every session. No spreadsheets, no guessing — just the line, going up.

See it

The real app. Not a mockup.

Dark by design, fast to log, and quietly beautiful — the maritime instrument panel for your training.

Progress screen with estimated 1RM trending up
Watch the line come in
est. 1RM · 5k · a full year of work
AI Coach chat referencing the athlete's real history
A coach that read your log
advice built on your real history
Session history with filters
Your whole training log
every lift and run, one tap away
Everything you train

One log for the whole regimen.

Capstan ships with typed activities — each with its own targets, timers, and progression rules — plus a custom slot for whatever you invent. Hybrid athletes, this one's for you.

Lift
Run
Intervals
Long run
Cycle
Row
Box
Swim
Yoga
Hike
Mobility
Measure

+ progression engine · injury mode with safe substitutions · record mode with per-set timing · plan import

Your log stays yours

Health data is not our business model.

Capstan is built on a simple rule: the most value, the least intrusion. Training and health data is treated as what it is — sensitive.

On-device by default

Your sessions live on your phone. Sync only what you choose to sync — nothing leaves without you.

Yours to take or delete

Export everything in one tap. Delete your account and it's gone — erasure cascades across every service.

Minimal by design

The coach receives only the training context it needs, never raw prompts stored for training. No ad tracking, ever.

Make way

Put your training on the record.

Early access is opening in waves. Drop your email and we'll send your invite the moment your slot is ready.

Almost there — check your inbox to confirm your spot.

iOS & Android.  Free while in beta.