Finish Your Workout.
Your AI Coach Takes It From Here.
No new apps. No manual logging. Connect your Strava account, and VibeWriter's AI automatically evaluates every workout, generates creative titles, tracks your goals, and summarizes your training — without you lifting a finger.
How It Works
Connect Strava
One click, ten seconds. Authorize VibeWriter to read your activities and you're done.
Train Like Normal
Use Strava, Garmin, your watch — whatever you already use. Nothing changes about your routine.
AI Does the Rest
Within seconds of finishing, your AI coach evaluates your workout, writes a title, and updates your training summary.
Everything Happens Automatically
AI Workout Evaluations
Finish a workout on Strava, and within seconds your AI coach analyzes your pacing, effort, and intervals — then posts detailed feedback right to your Strava activity description.
Creative Activity Titles
Boring "Morning Run" titles get automatically replaced with AI-generated titles that capture the vibe. Customize the tone with your own prompt, or let the AI surprise you.
Weekly Training Summaries
Every week, your AI coach synthesizes all your workouts into a training summary — volume, patterns, and progress. Like having a coach review your training log.
Goal Tracking
Tell the AI what you're training for — a marathon, a faster 5K, getting back in shape — and it weaves goal progress into every evaluation and summary.
Native iOS App
Check in on your training anywhere. The iOS app gives you your AI training summary, weekly stats, goals, and activity history — all synced automatically.
See What Your AI Coach Says
Strong negative split today. Your last 2 miles averaged 7:12/mi vs 7:45/mi in the first half — that's the kind of back-end speed that wins races.
HR stayed controlled through mile 4 before drifting up, which is exactly what you'd want in a tempo effort. Lactate threshold work like this is key for your April half marathon goal.
One thing to watch: your cadence dropped below 170 in miles 3-4. Try to keep it consistent — it'll help with efficiency as the distance increases.
What's New
VibeWriter ships often. Here's what landed recently.
Your AI coach can now save the workouts it prescribes, so they don't disappear when the chat scrolls away. Ask the coach to plan tomorrow's session — or the next week — and each workout lands on your schedule with a sport, a date, and a clear description (intervals, zones, paces all welcome as plain text). View what's coming under the new Activities → Upcoming tab on iOS or the new Workouts page on the web dashboard, and see today's session as a card on the iOS Home tab. Write your own from scratch too, or tweak what the coach scheduled. When you complete a workout on Strava that matches a planned date and sport, VibeWriter automatically links them — so the AI evaluation can comment specifically on whether you executed the plan as written, not just the activity in isolation.
The Coach chat now opens with a friendly greeting and a handful of starter prompts — grouped under Training, Recovery, Goals, and Performance — so you always have somewhere to begin. Tap a prompt and it lands in the input field ready for you to tweak before sending. Available on both the web dashboard and the iOS app.
Your AI coach (and the workout evaluator) can now ground their answers in a curated ultra-running knowledge base — training plans, taper protocols, fueling and pacing, recovery, heat adaptation, and race-day tactics. Ask 'how should I taper for a 100K?' or 'what's a smart fueling rehearsal for my long run?' and the coach pulls from real ultra-specific reference material instead of generic running advice. The coach decides when retrieval helps; everyday questions and small-talk turns are unaffected.
Your Data, Your Control
We only access what's needed to coach you — your activity data. Evaluations are generated per-workout and posted directly to your Strava activity. We never store personal information beyond what Strava provides, and your data is never used to train AI models. Connect in seconds, disconnect anytime.