# Endurance Debrief — Training Analysis > Local cycling and running training analysis app with form tracking. (iPhone/iPad app by Alexander Eichelbaum.) - Source: https://appshunter.io/ios/app/endurance-debrief/id6784980836 (this page in markdown: same URL + `.md`) - Developer: [Alexander Eichelbaum](https://appshunter.io/developer/6784980838) - Category: Health & Fitness, Sports - Price: Free (on sale, was $0.99) - Age rating: 4+ - Requires: iOS 17.0 · 5 MB - Languages: German (Germany), American English - Released: 2026-07-19 - Data updated: 2026-08-27 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/endurance-debrief/id6784980836/reviews.md ## What is 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. ## Key features - Training Stress Score (TSS) analysis - Form curve (CTL/ATL/TSB) - Local data processing - FIT, TCX, GPX file import - Apple Health integration - VO₂max trend estimation - No account or subscription needed ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/endurance-debrief/id6784980836/reviews.md ### 5/5 — Absolut Empfehlenswert *2026-08-04* Ich bin absolut begeistert von dieser App! Was mich am meisten überzeugt hat, ist die problemlose Handhabung von TIF-Dateien. Während diese bei Garmin bei mir ständig zu Upload-Problemen geführt haben, lädt diese App sie absolut reibungslos und ohne jegliche Fehlermeldung hoch. Auch die Datenanalyse ist einfach genial – extrem übersichtlich, präzise und bietet genau die Einblicke, die man für sein Training braucht. Ein riesiger Pluspunkt ist für mich zudem der Datenschutz: Es ist alles komplett privat und nur ich selbst kann meine Ergebnisse einsehen. Vielen Dank an die Entwickler für dieses tolle Tool. Absolute Weiterempfehlung! ### 5/5 — Genau was ich gesucht habe *2026-07-21* Übersichtlich, schick, ohne unnötiges Schnickschnack. Ich habe meine Trainingsdaten an einem Ort ohne ein nervige Abos abschließen zu müssen. ## Frequently asked questions about Endurance Debrief ### What is Endurance Debrief? Endurance Debrief is a health and fitness app that analyzes your cycling and running workouts. It provides detailed metrics like Training Stress Score and form trends, processing all data locally on your iPhone. ### How does Endurance Debrief analyze my training? It calculates metrics such as Training Stress Score (TSS), Normalized Power, Intensity Factor, and aerobic decoupling. It also tracks your form using the CTL/ATL/TSB model and provides a daily status indicator. ### Can I import my workout data into Endurance Debrief? Yes, you can import FIT, TCX, or GPX files from your cycling computers and sports watches. It also supports automatic import from Apple Health for workouts recorded with an Apple Watch. ### Is my data private with Endurance Debrief? Absolutely. Endurance Debrief is 100% private, with all calculations performed locally on your iPhone. It does not use the cloud, requires no account, and does not track your activity. ### What devices does Endurance Debrief support? Endurance Debrief is currently supported on iPhone. The app is rated for ages 4+ and was last updated on July 27, 2026. ### Does Endurance Debrief have ads? No, Endurance Debrief is completely ad-free. The app emphasizes privacy and does not contain any advertisements or tracking. ### What is the price of Endurance Debrief? Endurance Debrief is a paid app with a one-time purchase price of $0.99. There are no subscriptions or in-app purchases required after the initial purchase. ### How often is Endurance Debrief updated? The latest version of Endurance Debrief is 1.2, and it was last updated on July 27, 2026. The app is developed by Alexander Eichelbaum. ## Version history (last 5 releases) ### 2.2 — 2026-08-17 A maintenance update with small improvements. • iPad: the month calendar in History now makes much better use of the page height • Settings now tell you explicitly if your profile could not be saved • Under the hood: cleaner code and many more automated tests around the analysis of your files. The calculations themselves are unchanged — every value stays exactly as before. ### 2.1 — 2026-08-15 Your form on the Lock Screen — and Siri knows it too. • Lock Screen widgets: form as a ring, as a single line, or with fitness and fatigue in detail • Ask Siri: "What is my form in Debrief" or "How much TSS this week in Debrief" — you get an answer without the app opening • Both also show up in Spotlight search and the Shortcuts app • iPad: the calendar finally fills the page, Today shows more workouts, and the post-import debrief opens full screen instead of in a small sheet As always: everything is calculated on your device. No account, no network, no data going anywhere. ### 2.0.1 — 2026-08-01 Two fixes around Apple Health. • "Re-import Health workouts" now keeps the workouts you replaced by loading the original file. They used to be reverted to the less detailed Health version. • The heart rate check also looks inside your recent workouts. It no longer claims a missing permission just because you haven't trained for a few days. Nothing changes in the calculations. ### 2.0 — 2026-07-30 Debrief läuft jetzt nativ auf dem iPad. • iPad: eigene Darstellung statt vergrößerter iPhone-Ansicht, in Hoch- und Querformat • Schwimmen aus Apple Health: Einstellungen → „Importieren: Sportart" auf „Alle Sportarten" stellen und einmal „Health-Workouts neu einlesen" antippen • Lädst du zu einer aus Health importierten Einheit die Originaldatei nach, ersetzt sie den Health-Import — mit den vollständigeren Daten • Verbesserte Coach-Texte und klarere Hinweise beim Health-Import ### 1.2 — 2026-07-27 New in 1.2 — Swimming: • Swim workouts from your FIT file: pace per 100 m, lengths, SWOLF and strokes • Swim-specific training load (sTSS) from your CSS — feeding the same fitness curve as cycling and running • Treadmill runs are marked as such and count fully as running • Apple Health import can now be limited by date range and sport • CSV export of all your metrics • History can now be filtered by swimming as well • Improved sport detection on import and various bug fixes --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*