ENDURE: Indoor Cycling Trainer

STOP DOING FTP TESTS.
Your FTP updates from the rides you already do.

ENDURE is an indoor cycling app for smart trainers and turbo trainers — structured training, no virtual world. You connect your trainer, pick a workout and start riding. While you train, the app works out your FTP and VO2max trends from your ordinary rides. There is no ramp test to suffer through and no lab appointment to book.

We built the app because this is how we wanted to train ourselves: no game wrapped around it, just numbers you can trust.

START RIDING

• Works with Wahoo KICKR, Tacx, Elite, Saris, JetBlack and any FTMS smart trainer — plus power meters and heart rate straps over Bluetooth.
• Zwift Click, Play and Ride controllers are supported for shifting, so you change your target from the handlebar.
• Less than 30 seconds pass between opening the app and your first pedal stroke. It runs smoothly on a phone, so you don't need a gaming PC.
• In ERG mode the trainer holds your target watts, and smart smoothing evens out jumpy power data.
• If your phone crashes or the connection drops, auto-resume picks up exactly where you were. We haven't lost a hard session to a crash yet, and yours shouldn't be the first.
• For days without a plan there is a free ride mode: type in your target watts and pedal.

STRUCTURED WORKOUTS

• The library is curated. Every structured workout has a physiological purpose, such as VO2max, threshold, sweet spot or endurance — interval training you'll actually ride.
• You can import your own workouts. .ZWO, .MRC and .ERG files are read directly.
• The training calendar shows your sessions month by month.
• Before you ride, ENDURE picks today's session from your recovery score, your recent training load and a short morning check-in. You get one recommendation and two alternatives.

PROGRESS, ON THE SIDE

• ENDURE models your FTP and VO2max continuously from your recorded rides. You see where things are heading week by week instead of torturing yourself through an all-out test every eight weeks.
• The power profile shows where you're strong and where there's room, across all interval durations.
• The Potential analysis tells you what is holding your FTP back, your threshold or your aerobic ceiling, and which sessions work on it.
• Training load (TSS) and time in zones for power and heart rate — the cycling analytics are there after every session.
• Strava and intervals.icu are connected. Rides upload automatically, and on first launch ENDURE can import your ride history, so indoor and outdoor end up in one picture.

ANALYSIS AFTER THE RIDE

• Right after a workout, the AI reviews your session: did you hit the intervals, how clean was your pacing, and how much did your heart rate decouple from your power (Pw:HR)?
• Across your whole history, ENDURE spots trends, accumulated fatigue and the rides where something clicked.

IF YOU WANT TO GO DEEPER

• ENDURE is the first cycling app that lets you log lactate readings during the ride itself. From your values it estimates LT1 and LT2, with a confidence tunnel so you know how solid the estimate is.
• The CORE sensor pairs natively over Bluetooth. Core body temperature and heat zones run live on the ride screen.
• Climbing Efficiency detects the climbs in your outdoor rides and calculates a climbing score based on VAM.

ENDURE is an Early Release and keeps growing. What the community asks for goes straight into the updates. Premium is free for 14 days and asks for no payment details. After that, recording rides needs Premium. The winter training season is coming — give it a try and ride your first session today.

Indoor training on a turbo trainer with ENDURE means structured interval workouts in ERG mode, a training plan in the calendar and your threshold and lactate in view. The app works with any FTMS smart trainer and needs only your phone.

Recent changes:
IMPROVED
• Elevation charts now show feet and miles when you use imperial units.
• Starting a ride is more reliable when Bluetooth is switched off.

Plus bug fixes and performance improvements. Thanks for every bug report and message. Keep them coming.