Endurance Debrief

Endurance Debrief answers two questions after every workout: Was that session any good? And how fit am I right now?

Import your rides, runs and swims as FIT, TCX or GPX files — or automatically from Apple Health — and get the analysis usually reserved for big training platforms. Entirely on your iPhone. No account, no subscription, no cloud.

YOUR WORKOUT, HONESTLY ANALYZED
• Training Stress Score (TSS) — from power, pace or heart rate, depending on your data
• Normalized Power, Intensity Factor and aerobic decoupling
• Zone distribution: power, pace or heart-rate zones
• Coach feedback in plain sentences: what your numbers mean — generated fully on device

YOUR FITNESS AT A GLANCE
• Form curve based on the proven CTL/ATL/TSB model: fitness, fatigue, form
• Today view with a simple status: build, recover, or race-ready
• Weekly summary: sessions, TSS and fitness trend for the current week
• Home Screen widget with today's form
• History as a list or calendar, filtered by sport
• VO₂max trend estimated from your workouts

100% PRIVATE
• All calculations run locally on your iPhone
• No cloud, no account, no ads, no tracking
• Privacy label: "Data Not Collected"

FOR CYCLISTS, RUNNERS AND SWIMMERS
• FIT, TCX and GPX files from bike computers and sports watches
• Apple Health import for workouts recorded with Apple Watch
• Manual entries for sessions without a file — your form curve stays complete
• Profile with FTP, threshold pace, LTHR and heart-rate zones
• Fully localized in English and German
• Lock Screen widget: your form at a glance, without opening the app
• Siri and Shortcuts: "What is my form" gets answered right away


Download once, done. No subscription.

Note: VO₂max and form values are training estimates, not medical statements.