# Kadens: AI Training Coach — Sleep, HRV & Health Tracker > AI-powered health and fitness coach for long-term athlete progress. (iPhone/iPad app by Apptico.) - Source: https://appshunter.io/ios/app/kadens-ai-training-coach/id6762141844 (this page in markdown: same URL + `.md`) - Developer: [Apptico](https://appshunter.io/developer/1635209650) - Category: Health & Fitness, Sports - Price: Free - Age rating: 4+ - Requires: iOS 26.0 · 28 MB - Languages: American English, French (France) - Released: 2026-07-22 - Data updated: 2026-08-23 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/kadens-ai-training-coach/id6762141844/reviews.md ## What is Kadens? Kadens helps self-coached athletes progress for the long term. Most fitness apps stop halfway. Some focus on recovery. Others focus on training plans. Kadens is built to close the full loop over time: recovery, training load, planned sessions, what you actually did, and your progress, using the data that already lives in Apple Health. The first step is already live: understand whether your body can support the work ahead. ▶ TODAY Start each day with a clear recovery picture. • Last night's sleep at a glance • Morning body metrics compared to your usual range • Trends that show what is improving and what needs attention ▶ SLEEP Sleep drives recovery. Kadens helps you see if you are actually getting enough of it. • Sleep duration and sleep stages • 7-day sleep debt • Wake time compared with your usual wake time • 30-day trends for duration, debt, and wake consistency ▶ BODY METRICS See how recovered you are before you decide how hard to push. • Resting heart rate • Heart rate variability (HRV) • Respiratory rate • Blood oxygen • Wrist temperature Each metric includes a 30-day trend and a check against your typical range. ▶ WORKS WITH APPLE HEALTH You do not need an Apple Watch. Any wearable that writes to Apple Health can work, including Garmin, Oura Ring, Ultrahuman Ring, and others. Apple Watch usually gives the fullest picture. ▶ BUILT FOR THE LONG GAME Kadens is not a "do more" app. It is designed to help you train with intent: recover well, balance effort wisely, follow the session you planned, and see whether you are progressing on the path you chose. Coming next: training load guidance, structured sessions, planned vs actual analysis, and longer-term progress trends. ▶ PRIVACY Kadens reads your data from Apple Health on your device. Those readings stay on your device. Kadens is not a medical device and does not replace professional healthcare advice. Privacy Policy: https://www.apptico.fr/kadens/privacy-policy/ Terms of Use: https://www.apptico.fr/kadens/terms-and-conditions/ EULA: https://www.apptico.fr/kadens/eula Support: support@kadens.app ## Key features - Daily recovery insights - Sleep tracking and debt analysis - Body metrics (HRV, RHR, SpO2) - 30-day trend analysis - Apple Health integration - Long-term training progress monitoring ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/kadens-ai-training-coach/id6762141844/reviews.md ### 5/5 — Efficace *2026-08-13* Cette appli me permet de suivre mes performances sportives, de comprendre mes points faibles pour mieux progresser, je recommande ! Rare sont les applications à ce sujet aussi poussée ### 5/5 — Parfait pour le sport *2026-08-11* Ça rajoute une couche super intéressante par rapport à l’app santé pour améliorer ses séances de sport ! ### 5/5 — Génial ! *2026-08-06* L’une des meilleures applis de course que j’ai testées. On sent que le développeur connaît vraiment son sujet et les mises à jour apportent régulièrement de nouvelles fonctionnalités. ### 5/5 — J’adore *2026-08-06* Franchement l’application est hyper utile, je recommande vivement. Moi qui fait beaucoup de sport et me permet d’avoir toutes les informations nécessaires et utile rapidement. C’est vraiment compréhensible, donc ça change des autres applications ! ### 5/5 — Incroyable! *2026-07-29* Enfin une app qui me permet de tout traquer et améliorer mes performances de manière efficace ## Frequently asked questions about Kadens ### What is Kadens? Kadens is an AI-powered training coach designed to help self-coached athletes monitor their recovery and progress over the long term. It analyzes sleep, body metrics, and training data to provide actionable insights. ### Does Kadens have ads? No, Kadens is ad-free, allowing for an uninterrupted user experience focused on your health and fitness data. ### What devices does Kadens work with? Kadens works with any wearable that writes data to Apple Health, including Apple Watch, Garmin, Oura Ring, and Ultrahuman Ring. It is currently supported on iPhone. ### How does Kadens track sleep? Kadens analyzes your sleep duration, sleep stages, and wake time, comparing them to your usual patterns. It also tracks your 7-day sleep debt and 30-day sleep trends to help you understand its impact on recovery. ### What body metrics does Kadens monitor? Kadens monitors key body metrics such as resting heart rate, heart rate variability (HRV), respiratory rate, blood oxygen, and wrist temperature. Each metric includes a 30-day trend and comparison to your typical range. ### Is Kadens a medical device? No, Kadens is not a medical device and does not replace professional healthcare advice. It is intended for general fitness and wellness tracking. ### How often is Kadens updated? The latest version of Kadens is 1.2.0, last updated on August 10, 2026. Future updates are planned to include training load guidance and planned vs. actual analysis. ### What is the privacy policy for Kadens? Kadens reads your data from Apple Health on your device, and these readings stay on your device. You can find the full privacy policy at https://www.apptico.fr/kadens/privacy-policy/. ## Version history (last 5 releases) ### 1.4.0 — 2026-08-18 • See each kilometer, mile, or swim lap of a workout, with pace, heart rate, and the metrics that match that sport. • Review power and cadence on runs and rides, plus how elevation changed on every split. • Check stroke count, SWOLF, and pool or open water details on your swims. • Set your nightly sleep goal so Today, Sleep, and 7-day sleep debt all judge rest against the target you chose. • Add swimming heart rate zones, and set running power zones next to your cycling ones. • Sleep and body metric charts now show how many days in the period stayed on target. Train hard. Recover smart. Kadens keeps getting sharper with you. ### 1.3.0 — 2026-08-18 • Open any workout to see your route, effort, distance, heart rate, elevation, and weather. • See how each session was split across your heart rate, pace, or power zones. • Set cycling power zones, and use different heart rate zones for running and cycling when you need them. • Check how many days in a row you have worn your watch, right on Today. • Tap a new workout notification to open that session. • Compare this week’s totals to the same days last week, so a Monday is not compared to a full week. Train hard. Recover smart. Kadens keeps getting sharper with you. ### 1.2.0 — 2026-08-10 • Browse your workouts in a new Workouts tab, with this week’s totals compared to last week. • Set and customize training zones for heart rate, pace, and power, with a built-in calculator. • See an effort score on each workout, based on your heart rate and training zones. • Check your training load ratio on Today to see if recent days are lighter, balanced, or heavier than usual. • Track daily wellbeing progress for steps, exercise, and energy right on Today. • Get a notification when you hit your wellbeing goals, with a quick path back into the app. • Read body metric ranges more clearly, with a clearer status and where your value sits on the scale. Train hard. Recover smart. Kadens keeps getting sharper with you. ### 1.1.3 — 2026-07-27 • Improved the empty-state card on Today when no health data is available yet. • Fixed the rating prompt so Rate Now opens the review sheet reliably, and declining is remembered correctly. Train hard. Recover smart. Kadens keeps getting sharper with you. ### 1.1.2 — 2026-07-26 • Sleep duration and sleep debt now count your full day of rest, including naps. • Made the sleep phases chart on Today more accurate when naps or wake gaps are part of your night. • Improved reliability of background sleep updates so your recovery data stays fresher. • Body metrics on Today now show how far you are from your personal baseline. • Made wrist temperature ranges more accurate across Celsius and Fahrenheit. • Body metrics on Today and Body Metrics load faster. • When Today has no data yet, you now get a clear prompt to open Apple Health and check access. • Today now shows the full date under the title, so you always know which day you are viewing. Train hard. Recover smart. Kadens keeps getting sharper with you. ## More apps by Apptico - [Weather +](https://appshunter.io/ios/app/weather-plus/id1542742219) - [AI Cleaner・Clean Phone Storage](https://appshunter.io/ios/app/ai-cleanerclean-phone-storage/id6443969888) - [Chatbot: AI Chat + Assistant](https://appshunter.io/ios/app/chatbot-ai-chat-plus-assistant/id6446813562) - [Trainr: Running Trainer Coach](https://appshunter.io/ios/app/trainr-running-trainer-coach/id6448386156) - [Hours Tracker・Time Clock & Pay](https://appshunter.io/ios/app/hours-trackertime-clock-and-pay/id6762600259) All apps by Apptico: https://appshunter.io/developer/1635209650 --- *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 2026-08-23.*