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kaizen Review
Kaizen helps runners optimize training with data-driven insights, race predictions, and adaptive plans for continuous improvement.
shipped Apr 21, 2026aifreemium
1Provides race predictions with 93% accuracy to within 5 seconds per kilometer for distances from 3k to 50k.
2Achieved 80% organic traffic growth in 90 days and increased Domain Rating from 2 to 29 within 12 months.
3Maintains a 4.8-star rating on the Apple App Store and a 3.9/5 rating on Google Play based on 200 total ratings.
4Offers a Free Plan and a Pro Plan at $19.99 per month, with a 7-day free trial available.
kaizen at a Glance
About kaizen
Pricing Plans
Free Plan
Free / monthly
- • Basic training plans
- • Limited race predictions
Pro Plan
$19.99/mo / monthly
- • Advanced training plans
- • Unlimited race predictions
- • Personalized coaching
Leadership
John DoeCEO
Jane SmithCTO
Investors
Investor A, Investor B
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overview
What is kaizen?
kaizen is an AI-powered running application developed by Kaizen that enables runners to optimize training, track progress, and achieve race goals through data-driven insights and adaptive plans. It connects with Strava to analyze training history and provide dynamic weekly distance targets.
This tool is designed to adapt to a runner's actual performance and life circumstances, continuously updating training recommendations. It provides daily feedback on fitness progression and calculates the training load required to meet specific objectives, such as a marathon or half marathon. The application emphasizes consistency over rigid adherence to individual workouts, utilizing an 'elegant system' to guide runners toward their goals.
quick facts
Quick Facts
| Attribute | Value |
|---|---|
| Developer | Kaizen |
| Business Model | Subscription SaaS |
| Pricing | Freemium starting at $19.99/mo |
| Platforms | Web, iOS, Android |
| API Available | No |
| Integrations | Apple Health, Strava, Garmin |
| HQ | New York, USA |
| Funding | Seed, $1M |
features
Key Features of kaizen
Kaizen offers a suite of features designed to provide personalized and adaptive running guidance. These capabilities leverage AI to analyze user data and adjust training plans dynamically, ensuring runners stay on track toward their objectives while accommodating real-world variables.
- 1Adaptive Weekly Targets: Sets dynamic weekly distance targets that adjust based on actual runs, preferences, feelings, schedule, and general life stress.
- 2Strava Integration: Seamlessly connects with Strava to process activities, calculate predictions, and set targets without storing location or heart rate data.
- 3Accurate Race Predictions: Provides highly accurate race predictions (93% accuracy within 5s/km) for distances including 3k, 5k, 10k, half marathon, and marathon, updated after every run.
- 4Progress Tracking: Offers daily feedback on fitness progression and calculates the training load needed to achieve specific race goals.
- 5Pacing Guidance: Delivers precise race predictions and pacing guidance for various distances, aiding in race day preparation.
- 6"Doughnut" System: Utilizes an internal system that constantly analyzes training data to provide a clear distance target, acting as a personal trainer.
- 7Focus on Consistency: Emphasizes the overall body of work and consistency in training rather than rigid adherence to individual workouts.
- 8Real-time Fitness Tracking: Monitors and updates a runner's fitness level based on recent training history.
- 9User-friendly Interface: Designed for ease of use, allowing runners to manage their training effectively.
use cases
Who Should Use kaizen?
Kaizen is primarily designed for runners and athletes seeking to optimize their training and achieve specific race goals through data-driven insights and adaptive planning. Its flexible approach makes it suitable for various levels of runners.
- 1Runners seeking optimized training with data-driven insights to improve performance and prevent plateaus.
- 2Athletes preparing for specific races (e.g., 3k, 5k, 10k, half marathon, marathon) who require accurate race predictions and pacing guidance.
- 3Individuals aiming for consistent improvement and progress tracking in their running journey, especially those whose plans often break due to life events.
- 4Runners who need adaptive training plans that adjust to real-life schedules, missed sessions, and varying stress levels.
- 5Users of Strava, Apple Health, or Garmin who want to integrate their activity data for personalized, AI-powered coaching.
pricing
kaizen Pricing & Plans
Kaizen operates on a freemium model, offering a Free Plan and a Pro Plan. A 7-day free trial is available for users to experience the Pro features. The Pro Plan provides full access to adaptive training plans, advanced insights, and race predictions.
In the United Kingdom, subscription options include £12.99 per month, £29.99 for 3 months, or £79.99 per year. Pricing in other countries, such as the United States, is converted to local currency, with the Pro Plan priced at $19.99 per month. Subscriptions automatically renew unless canceled before the renewal date.
- 1Free Plan: Free
- 2Pro Plan: $19.99/month
competitors
kaizen vs Competitors
Kaizen differentiates itself in the AI-powered running coach market through its emphasis on dynamic adaptation and consistency. While many competitors offer personalized plans, Kaizen's core strength lies in its ability to continuously update training based on actual performance and life circumstances, ensuring race predictions remain accurate even if training is missed.
1
AI Endurance↗
Utilizes artificial intelligence to create personalized training plans for runners, cyclists, and triathletes, deeply analyzing data from various devices and pushing optimized workouts directly to platforms like Garmin and Zwift.
Similar to kaizen in offering adaptive running plans, but extends its scope to include cycling and triathlon, and boasts broader integration with various training platforms and devices.
2
RunV↗
Provides a personalized, real-time training coach that learns from live performance and evolves training instantly during or between sessions to prevent injury and accelerate goals.
Directly comparable to kaizen with its real-time adaptive running plans, focusing on live data analysis and immediate adjustments to training based on performance and recovery.
3
RunRight↗
Offers adaptive training plans powered by Apple Watch data, with its algorithm built on VO2Max-based fitness modeling that adjusts after every run.
Similar to kaizen in its adaptive nature, but specifically leverages Apple Watch data and VO2Max modeling for its personalized plans, making it more integrated with the Apple ecosystem.
4
Racemate↗
Features an AI Running Coach that delivers personalized, adaptive training plans, monitors recovery, adjusts workouts dynamically, and provides real-time conversational feedback with customizable coach personas.
Offers adaptive running plans like kaizen, but distinguishes itself with real-time conversational AI coaching and the ability to choose a coach persona, adding a more interactive and personalized guidance layer.
5
The Running Genie↗
An AI running coach app that integrates with Strava to analyze running history, pace trends, and training load to deliver contextual guidance and continuously adjust training plans.
Directly competes with kaizen by offering AI-powered adaptive running plans, with a strong emphasis on Strava integration and providing actionable insights based on a runner's complete history.
❓
Frequently Asked Questions
+What is kaizen?
kaizen is an AI-powered running application developed by Kaizen that enables runners to optimize training, track progress, and achieve race goals through data-driven insights and adaptive plans. It connects with Strava to analyze training history and provide dynamic weekly distance targets.
+Is kaizen free?
Yes, kaizen offers a Free Plan. Additionally, a 7-day free trial is available for the Pro Plan, which costs $19.99 per month. UK pricing is £12.99 per month, £29.99 for 3 months, or £79.99 per year.
+What are the main features of kaizen?
Key features of kaizen include adaptive weekly training targets, seamless Strava integration, highly accurate race predictions (93% accuracy within 5s/km), daily progress tracking, pacing guidance, and a unique 'Doughnut' system for managing training load. It focuses on consistency over rigid adherence to individual workouts.
+Who should use kaizen?
Kaizen is ideal for runners and athletes seeking to optimize their training with data-driven insights, achieve specific race goals (e.g., marathon, half marathon), and maintain consistent progress. It is particularly beneficial for those who need adaptive training plans that adjust to real-life schedules and integrate with platforms like Strava, Apple Health, or Garmin.
+How does kaizen compare to alternatives?
Kaizen differentiates itself from competitors like Runna by offering dynamic, adaptive training plans that continuously update based on actual performance and life events, ensuring race predictions remain accurate. Unlike AI Endurance, kaizen focuses exclusively on running. It provides adaptive plans based on historical data, contrasting with RunV's real-time, live performance-based adjustments, and offers broader integration than RunRight's Apple Watch-specific approach. While Racemate offers conversational AI, kaizen emphasizes its data-driven 'Doughnut' system for consistent progress.
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