# Kairn: AI Running Coach — Trail & marathon training plan > Trail & marathon training plan (iPhone/iPad app by KAIRN.) - Source: https://appshunter.io/ios/app/kairn-ai-running-coach/id6740853519 (this page in markdown: same URL + `.md`) - Developer: [KAIRN](https://appshunter.io/developer/1791948140) - Category: Health & Fitness - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 17.0 · 85 MB - Languages: American English, Bulgarian, Croatian, Czech, Danish, Dutch, Estonian, Finnish, French (France), German (Germany) and 14 more - Released: 2025-11-08 - Data updated: 2026-11-14 ## What is Kairn? Your AI running coach for trail and road, for your legs and your mind. Kairn builds your training plan around your race, from 10K to ultra-trail: running, strength and mental training in one plan. Kai, your AI coach, adjusts it every week to your form, your schedule and your watch. A PLAN BUILT FOR YOUR RACE Pick your race, your goal and your priorities, then tell Kai how many runs a week you can fit in, on which days, and when you do your long run. Kai builds your program week by week up to race day: intervals, easy runs, long runs, hill work for the trail, paces set from your goal on the road. KAI READS YOUR COURSE Map, elevation profile, hardest climbs and descents, aid stations: Kai spots what will cost you the most and prepares you for it. Set your target time and get your split at every aid station, with your margin on each cut-off. Race not in the app? Import its GPX. RUNNING, STRENGTH AND MENTAL IN ONE PLAN • Runs with clear blocks: warm-up, intervals, recovery, heart rate zones and paces • Short strength sessions designed for runners, placed so they don't get in the way of your runs • Mobility, cross-training and rest days • Mental training in the same week: visualization, breathing, anchor phrases • Mental cues in some runs, to put what you've trained into practice YOUR SESSIONS ON YOUR WATCH Send a run to your Apple Watch, COROS or Suunto in one tap and follow it block by block on your wrist. Your workouts, sleep and recovery come back to Kai from Apple Health, COROS, Suunto or Polar. A PLAN THAT ADAPTS EVERY WEEK Short nights, a busy week, a heatwave on Saturday: Kai reads your watch, listens to what you tell it and rewrites the sessions ahead. After each session, tell it how you felt. Change your rhythm anytime in your training preferences. PLANNED VS DONE Time, distance, elevation gain and pace, week after week: see what you planned and what you actually ran. MENTAL PREPARATION, THE KAIRN DIFFERENCE Your legs may be ready, but stress, doubt or a start that's too fast can ruin a race. Kairn trains your mind too, with short, practical exercises designed for runners: • Manage pre-race stress • Build your confidence • Visualize the key moments of your race • Master your start and your pace • Stay focused when the effort gets hard • Face doubt and the fear of cracking • Debrief your race to keep improving Take the mental profile test, designed with mental performance experts, to find your strengths and what to work on: confidence, focus, stress management, motivation and resilience. KAI, ALWAYS BY YOUR SIDE Write to Kai or send a voice message whenever you need to: a question about a session, a dip in motivation, pre-race nerves. Kai also checks in on its own at key moments and debriefs your runs with you. Add your program to Apple Calendar or Google Calendar: every session on its date, updated whenever Kai adjusts your plan. Kairn is free to download, with a free trial. A monthly or yearly Kairn Premium subscription unlocks the whole plan. Kairn does not replace medical advice. Listen to your body: if anything hurts, stop and see a health professional. Train your body. Train your mind. Run your best race. Privacy policy: https://kairn.co/privacy-policy Terms of use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Monthly | $12.99 | per month | | Annual | $70.00 | per year | | Trimestriel | $22.00 | per 3 months | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Kairn Brief | $2.90 | one-time | | Kairn Brief | $2.90 | one-time | | Kairn Brief | $3.90 | one-time | | Kairn Brief | $4.90 | one-time | | Life Time Kairn Premium | $99.00 | one-time | ## Is Kairn safe? Not enough ratings yet to assess Kairn. ## Is Kairn legit? Kairn: AI Running Coach appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Kairn is 65 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 5 releases) ### 3.0.2 — 2026-11-14 What's new: • Link your Garmin watch and send your runs to it • Your program now comes in periods up to race day: see each one from the start, with its dates and goal • Kai details the coming weeks as you go, based on what you actually ran • A 5K time trial to set your paces: enter your time in the session • Two new questions when you create your program: how long you've been running, and your injuries • Bug fixes and stability ### 3.0.1 — 2026-11-11 What's new: • Your training plan is now free, for this race and every one after • With Premium, Kai adapts it to how you feel, your progress and your week • Your latest COROS activities come in as soon as you open the app • More reliable sign-in and account creation ### 3.0.0 — 2026-11-09 What's new: • Send your runs to your Apple Watch, COROS or Suunto, block by block • A new start: your race, your goal, your priorities and your weekly rhythm, editable anytime • Planned vs done: time, distance, elevation and pace, week after week • Mental cues in your runs, tied to the exercises you've done • Import your race's GPX when it isn't in the app • Email sign-in with a magic link, no password ### 2.1.1 — 2026-10-21 - watch sync - bug corrections ### 2.1.0 — 2026-10-15 - bug corrections ## Apps similar to Kairn | App | Rating | Price | Category | | --- | --- | --- | --- | | [Fokkus, mental coach for sport](https://appshunter.io/ios/app/fokkus-mental-coach-for-sport/id6760389336) | — | Free | Health & Fitness | | [Perform - AI Sport Psychology](https://appshunter.io/ios/app/perform-ai-sport-psychology/id6504174336) | 4.7 (26) | Free | Health & Fitness | | [NutriFuel - trail & running](https://appshunter.io/ios/app/nutrifuel-trail-and-running/id6759067226) | — | Free | Health & Fitness | | [Coach Running IA](https://appshunter.io/ios/app/coach-running-ia/id6780828858) | 5.0 (1) | Free | Health & Fitness | | [Hyphen Studio](https://appshunter.io/ios/app/hyphen-studio/id6743939909) | — | Free | Health & Fitness | | [Boli Care](https://appshunter.io/ios/app/boli-care/id6752019485) | — | Free | Health & Fitness | --- *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 2026-11-14.*