Frequently asked questions about RestOrTrain
Ask in the chat inside the app if this page does not answer your question.
RestOrTrain handles your training in cycling, running, swimming or triathlon, from the season plan to each workout. It learns from everything you tell it and acts on it, drawing on your whole history as an athlete. It calculates training numbers without AI before its AI uses them, leaving far less room for error.
RestOrTrain sends your workouts to your devices or plays them on your indoor trainer. It explains every decision and adapts your plan with your approval.
RestOrTrain calculates training load, FTP, fitness and fatigue without AI; its AI uses those numbers, leaving far less room for error than general-purpose models recalculating them each time. It has guardrails built specifically for endurance training load, with prompting done for you and tuned for world-class endurance coaching. RestOrTrain learns from every interaction and acts on your whole history as an athlete; ChatGPT and Claude are general-purpose AI assistants with memory and file reading, as checked on October 9, 2026.
RestOrTrain's tests found that language models default to weeks that are too light and key sessions that are too short; RestOrTrain is tuned to make the right training call. The app keeps your workout calendar current, draws charts on request, brings rides and recovery data in, and sends workouts to devices or plays them on your indoor trainer.
RestOrTrain builds every workout for you and the day, in cycling, running, swimming or triathlon. As of October 9, 2026, TrainerRoad picks and tunes cycling workouts from a library, with no chat or inputs from sleep, HRV or resting heart rate.
RestOrTrain learns from everything you tell it, including activity notes and workout feedback, and acts on it. Tell it a knee hurts on climbs, and that informs the workouts it builds. It also uses your sleep, HRV and resting heart rate.
Ask anything a good coach would cover, including fueling, race pacing, gear and training through illness or injury. The prompting is done for you and tuned for world-class endurance coaching. Try "Rate my last workout", "How should I train this week based on my training load?" or "Find my strengths and weaknesses".
RestOrTrain gives concise, concrete recommendations from your training and recovery data. Ask for a chart of anything, such as weekly training load since March, and RestOrTrain draws a bar or line chart from your own data.
RestOrTrain learns from every interaction, including activity notes, workout feedback and everything you tell it, and acts on all of it. The more you use it, the better it understands your habits, limitations, strengths and weaknesses.
The Memory list on the Profile tab shows facts remembered from conversations; you can read, add and delete entries. Ride notes inform answers too, though they are not in that list. Put rules it should always follow, such as no rides before 6:00, in Custom Instructions in Settings.
RestOrTrain syncs in both directions: rides, sleep and HRV come in, and workouts go out. Garmin Connect, COROS, Intervals.icu and Apple Health on iPhone and iPad supply rides, sleep, HRV and resting heart rate. Wahoo and Hammerhead supply rides, while Zwift and Rouvy supply indoor rides.
WHOOP supplies recovery scores, sleep, HRV and resting heart rate; Polar, Suunto and MyWhoosh rides arrive through Intervals.icu. For other devices, upload .fit or .zip files.
RestOrTrain's free indoor player runs your cycling workouts on a smart trainer. On iPhone or Android, open a planned workout with power targets on every step and tap Start on indoor trainer. It connects over Bluetooth to a trainer that supports FTMS and, optionally, a heart-rate strap.
ERG holds each step's watts, and you can adjust the intensity or turn ERG off. The workout keeps running with your phone locked.