Workout journal for AI coaching
Log workouts in plain text. Copy one prompt. Talk to any AI. Skip the bloated planners.
Planning is stiff. Screens are busy. You hunt exercises through long lists. AI features feel bolted on — or missing. You spend more time fighting the product than training.
Repn is a daily freeform journal plus a master instruction. Hit Get prompt, paste into ChatGPT, Claude, or whatever you already use — and get concrete next-session guidance without another subscription gym OS.
No exercise database theater. No complicated periodization UI. Just enough structure to remember what you did — and enough text for a good model to plan what's next.
Your log becomes context for your next session. No portals. No subscriptions. Just plain text you can trust.
Example export
=== 2026-08-22 (Saturday) === Squat 5x5 @ 100kg Bench 3x8 @ 70kg Pull-ups 3xAMRAP === 2026-08-20 (Thursday) === Deadlift 3x5 @ 140kg === Master instruction === Today is 2026-08-23 (Sunday) You are my lifting coach. I train 4–5 days/week. Prefer concrete next-session suggestions from the log.
The product gets out of the way: you log workouts in seconds, then copy a prompt whenever you want to coach your next session.
Repn is intentionally simple: write the log you can remember, then let your AI coach you from that context.
No. Repn keeps things lightweight: one multiline entry per day, plus your master instruction. You never have to hunt exercises through long lists.
Your log becomes the workout history, and your master instruction provides your coaching context (training days, units, style, and what to optimize next).
Repn uses your device's calendar day to decide which entry is 'today'. That means entries and exports match the timezone you actually train in.
Yes. Use 'Get prompt' to copy a plain-text export of your last 21 workout days (including today) plus your master instruction - ready to paste into ChatGPT, Claude, or anything else.
No. Repn isn't a locked-in coaching app. Your coaching context lives in text you control, and you can use any AI you already prefer.
One prompt, tailored to your history. Copy it, paste it, coach your next session.