Cinder: AI Run Coach
AI Run Coach & Tracker
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Cinder is the run coach in your pocket — powered by AI, built for real runners.
Whether you're training for your first 5K or chasing a marathon PR — or taking on a 50 or 100-mile ultra — Cinder builds a personalized training plan around your goal, current ability, and weekly schedule. Then it adapts as you go.
SMART TRAINING PLANS
Generate a fully personalized plan in seconds. Cinder schedules easy runs, long runs, tempo work, intervals, and rest days — all calibrated to your fitness level and goal race. Supports 5K through 100-mile ultra distances.
AI COACH CHAT
Ask anything. Your AI coach knows your recent workouts, how you slept, your upcoming races, and your training history. Get real answers, not generic advice — and your conversation carries over every time you open the app.
GPS RUN TRACKING
Track every run with precise GPS. See live pace, distance, and elapsed time on screen. Your full route is saved and viewable after every run — even with the screen off.
CINDER SCORE
Each morning, log your sleep, energy, and stress. Cinder uses your daily score to adjust your workout intensity and warmup — so you train smart, not just hard.
ADAPTATION ENGINE
Told Cinder your legs were dead after Tuesday's long run? Wednesday's workout adapts automatically. The plan bends so you don't have to break.
RACES NEAR ME
Find upcoming races within 25 miles using live data. Register directly from the app.
SHOE TRACKER & RECOMMENDATIONS
Log your running shoes and track mileage per pair. Get personalized shoe recommendations based on your training profile with direct shop links.
PROFILE & PERSONAL BESTS
Track your training streak, total miles, time on feet, fastest mile, and longest run — all in one place.
MILESTONE BADGES
Earn achievements as you build your streak, hit distance milestones, and reach new personal records. Twelve badges with animated celebrations.
RACE PREDICTOR
Based on your training data, Cinder predicts your finish time for any race distance using the proven Riegel formula.
STRAVA INTEGRATION
Connect Strava and your completed runs sync automatically — with distance, duration, and route.
Cinder is free. No subscription, no paywall, no account required. Your data stays on your device.
Ratings & Reviews
Profile hub redesign — photo, display name, personal bests, training streak, and Cinder Score all in one place.
Races Near Me — find upcoming races within 25 miles using live data from RunSignup.
AI Coach improvements — chat history now persists between sessions, keyboard no longer covers the input.
Daily workout reminders — get a 7 AM notification with your scheduled workout.
Shoe recommendations now link directly to Amazon.
The developer, Dustin NIELSEN, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Location
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Health & Fitness
- User Content
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Dustin NIELSEN
- Size
- 31.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Dustin Nielsen