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Kairn: AI Running Coach app icon
#4in Mental Coaching

Kairn: AI Running Coach

A Tier
Excellent
81
4.931 ratings
3dsince update
FreeIn-App Purchases
Health & Fitness
category
4+age rating
24languages
Made for iPhone

What is Kairn?

AI running coach for road and trail races that builds training plans, course strategy and mental preparation.

Kairn is a Health & Fitness app that builds a training plan around a chosen race, from 10K to ultra-trail, combining running, strength and mental training. Its AI coach, Kai, adjusts the plan weekly based on form, schedule and watch data. The listing also describes course analysis, watch sync and a mental profile test.

Pricing. Kairn is free to download, with in-app purchases on the App Store.

Good for

  • Preparing for a specific road or trail race
  • Runners who want mental training alongside workouts
  • Syncing sessions to an Apple Watch, COROS or Suunto

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Why this app is in A tier

81/100The average of 4 parts, with no weights
Rating97
Ratings55
App Store search rank70
Update recency100

A tier follows from that score within this list. The full explanation, as data.

Kairn scores 81 out of 100: rating 97, rating count 55, App Store search rank 70, update recency 100. The four parts are averaged and A tier follows from that score within this list.

Description

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.

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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/

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Questions about Kairn

Is Kairn free to use?

The app is free to download and includes a free trial. The listing mentions a monthly or yearly Kairn Premium subscription and in-app purchases, but the subscription prices are not stated on the App Store excerpt provided.

Which races and devices does it support?

It covers races from 10K to ultra-trail, and it can send sessions to Apple Watch, COROS or Suunto. Workouts, sleep and recovery can be imported from Apple Health, COROS, Suunto or Polar. Races not in the app can be.

Does it include mental training?

Yes. The listing describes short mental exercises for pre-race stress, confidence, visualization, pacing and doubt, plus a mental profile test. These are placed in the same weekly plan as runs and strength sessions.

Is Kairn right for me?

Kairn is built for preparing for a specific road or trail race, runners who want mental training alongside workouts, syncing sessions to an apple watch, COROS or suunto. It sits in the mental coaching list on AppTierList.

Is Kairn worth it?

Kairn is A tier, ranked #4 of 8 mental coaching apps with a score of 81 out of 100, from a 4.9 App Store rating across 31 ratings. It is in the list's top tiers; 3 apps rank above it.

How does Kairn compare to Flow Lab?

Kairn is A tier at 81; Flow Lab is A tier at 82. Flow Lab ranks higher. Kairn is free to download, with in-app purchases, Flow Lab is free to download, with in-app purchases.

How often is Kairn updated?

Kairn was updated 3 days ago, which counts in its favour.

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Categories

All the facts

Ranking

Lists
Mental Coaching (A tier, #4) · Fitness Coaching (#121, beyond the tiered top)
Tier
A (Excellent)
Score
81 / 100
Rank in list
#4 of 8
Ranking certainty
settled

Ratings

App Store rating
4.9 out of 5, every App Store country
Ratings
31

App

Price
Free + IAP
App Store category
Health & Fitness
Current version
(3 days ago)
Size
89 MB
Requires
iOS 17.0 or later
Age rating
4+
Languages
24
Runs on
iPhone

Links

Developer pages
Support · Privacy policy
Maker
not verified

App Store data read · ranking