# Kairos: Strength and Cardio

> Kairos: Strength and Cardio (iPhone/iPad app by Jonas Malik Langenberg.)

- Source: https://appshunter.io/ios/app/kairos/id6755912337 (this page in markdown: same URL + `.md`)
- Developer: [Jonas Malik Langenberg](https://appshunter.io/developer/1853649436)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.6 · 21 MB
- Languages: American English, German (Germany)
- Released: 2026-01-02
- Data updated: 2026-01-10
- User reviews in markdown: https://appshunter.io/ios/app/kairos/id6755912337/reviews.md

## What is Kairos?

Achieve your fitness goals with Kairos!

Kairos is suitable for every fitness level: whether you're a beginner, intermediate, or pro. Choose a goal and follow your personalized training plan that always adapts to your needs and progress.

Endurance, strength, or why not both? With Kairos, you'll become a true athlete!

The key advantages of Kairos:
- Comprehensive onboarding to create your individual training plan
- Intelligent adaptation to your available time
- Scientifically-based training
- Combines endurance and strength training. Become a real athlete!
- Takes your injuries into account
- Flexible exercise alternatives with one tap
- Progressive overload for continuous progress

Kairos's comprehensive approach to creating your training plan includes 3 key elements: strength training, cardio training, and your schedule. Only together do all these aspects contribute to achieving your goals with the best results.

STRENGTH TRAINING
- Over 90 scientifically-based programs with different training methods
- Personal goals and progression recommendations based on your actual performance
- Your individual recovery (muscle soreness, sleep, etc.) is taken into account
- Periodization and regular plan adjustments

SCHEDULING
- Training planning based on your available time
- Adaptation between 20-minute home workouts and 90 minutes at the gym
- Flexible workouts that adapt to your daily life
- Intelligent integration into your daily routine

EXERCISE VARIETY
- Lightning-fast exercise swaps with one tap
- Alternative exercises for the same muscle groups
- Offline mode for training anywhere

Using Kairos requires an active, paid subscription or one-time purchase. Both can be completed through the free app.

Terms of use: https://kairosfitness.app/terms/
Privacy Policy: https://kairosfitness.app/privacy/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Yearly Subscription | $17.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| One Time Purchase for Kairos | $24.99 | one-time |



## Version history (last 5 releases)

### 1.0.5 — 2026-01-09

Improved Training Zones
- Cooper test results now display detailed training zones matching your Statistics view
- See all 5 pace zones (Easy, Marathon, Threshold, Interval, Repetition) with RPE values
- Heart rate zones now show the full 6-zone breakdown for precise training guidance

Easier Cooper Test Retakes
- Retake button is now always visible on your plan home screen
- Easily update your fitness data anytime, not just when your test expires

Bug Fixes
- Fixed exercise navigation during workouts to properly skip completed exercises
- Resolved horizontal scrolling issues in various views
- Improved display of overlapping events in daily check-in

### 1.0.4 — 2026-01-08

What's New?

• Cooper Test Retake – When starting a new plan with cardio, you can now retake the Cooper Test to update your fitness zones and see your progress compared to previous results

• Easier Plan Management – Long-press any custom plan to quickly access edit, start, archive, or delete options

• Improved Timeline – The schedule now updates instantly after completing check-ins or creating new plans. Event names are no longer cut off when activities overlap

• Bug Fixes – Fixed an issue where check-in status and workout data could persist after deleting your account and starting fresh

### 1.0.3 — 2026-01-07

- Fixed bug that did not allow users to register if they used/selected imperial measurements.
- Fixed bug that froze the timer in Cardio workouts.

Smarter Workout Scheduling
• Flexible workout completion – Complete workouts from your plan ahead of schedule and your progress is saved correctly
• Automatic rescheduling – Did a different workout than planned? Your original workout is automatically moved to the next suitable day
• Accurate home screen – The home screen now shows whether today's scheduled workout is done, not just any workout
• Bug fixes and performance improvements

### 1.0.2 — 2026-01-06

Create your own exercises! You can now add custom exercises to your workout library with full customization – set muscle groups, equipment, and default reps. Your custom exercises are marked with a star badge.

We've also added workout previews when building training plans, so you can see exactly which exercises are included before adding them to your schedule.

Plus: Improved German localization throughout the app and various bug fixes for a smoother training experience.

### 1.0.1 — 2026-01-02

HOTFIX: Bug fixed in Paywall.

## More apps by Jonas Malik Langenberg

- [Humboldt: Insect Identifier](https://appshunter.io/ios/app/humboldt/id6759322991)

All apps by Jonas Malik Langenberg: https://appshunter.io/developer/1853649436

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*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 2026-01-10.*