Comparison

Kaizen Studio vs VO2 Max Training

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Test & Improve with Intervals

Free

💪 Health & Fitness

★ 4.67 ratingsView app →

About

Kaizen Studio

Features

Read full description

Discover a new approach to fitness with Kaizen Studio, your ultimate destination for personalized health and wellness. Our nationally certified trainers bring expertise and dedication to every session, creating a tailored fitness journey just for you. Whether you choose 1-on-1 personal training, semi-private sessions, or our unique Rejuvenation Mobility Enhancement Membership, you'll find the perfect fit for your goals. At Kaizen Studio, we focus on continuous improvement, guiding you through strength-based workouts and innovative techniques like Instrument Assisted Soft Tissue Mobilization. Our nutrition guidance and meal planning support ensure you achieve a balanced and sustainable lifestyle. Join us to experience the transformative power of Kaizen, where we inspire lasting changes and help you embrace a healthier, happier life. Download Kaizen Studio today and start your journey towards continuous improvement and well-being!

About

VO2 Max Training

This app provides science-backed interval training protocols to improve cardiovascular fitness and long-term health. It guides users through warm-ups, work intervals, and cool-downs with customizable timers and activity tracking.

Highlights

Science-backed interval protocols (Norwegian 4x4, Tabata, HIIT)
Color-coded workout timer with phase transitions
Activity tracking with streaks and progress
Supports running, cycling, rowing, and indoor cardio
Fitness age estimation

Features

Read full description

PEAKVO2 is a VO2 max training app built around the interval protocols that actually move the needle: Norwegian 4x4, Tabata, HIIT 30/30, and more. Pick a workout, press start, and the app guides you through every phase: warm-up, work intervals, recovery, and cooldown. Why VO2 max? VO2 max is the single best predictor of cardiovascular fitness and long-term health. Improving it doesn't require guesswork, it requires the right intervals, done consistently. PEAKVO2 gives you both. What's included: 24 science-backed interval protocols, including the Norwegian 4x4, Tabata, and HIIT 30/30 Build your own custom interval workouts Color-coded workout timer with automatic phase transitions Activity tracking with streak, year in review, and training minutes Works with running, cycling, rowing, and indoor cardio Free to start. 4 workouts are yours forever — no strings attached. Unlock all protocols, custom workouts, and full activity tracking with a subscription or one-time lifetime purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Kaizen Studio4 screens

VO2 Max Training4 screens

Verdict

The call

The clearest difference is in-app purchases: Kaizen Studio at none against VO2 Max Training's 6. Kaizen Studio also leads on iOS requirement (11.0.0 vs 18.0). VO2 Max Training's advantage is update cadence (every 4 days vs every 5 months). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. VO2 Max Training sells 6 in-app purchases, starting at $0.99 per month. Kaizen Studio asks for nothing beyond the download.

UpkeepUpdate frequency

Kaizen Studio ships an update every 5 months, VO2 Max Training every 4 days. Both last shipped on November 4, 2026.

Scorecard3 real differences · 7 level

Kaizen Studio versus VO2 Max Training: the parameters behind the verdict, then further details
Parameter	Kaizen Studio	VO2 Max Training
Price	Free	Free
Rating	—	4.6 (7 ratings) — better
Positive reviews	—	100.0% of reviews
Number of ratings	—	7 — better
Update frequency	Every 5 months	Every 4 days — better
Ads	No	No
In-app purchases	No — better	Yes
Monetization	—	Free with in-app purchases
Devices	iPhone, iPad, iPod — better	iPhone, Apple Watch
Requires iOS	11.0.0 — better	18.0
Further details — not scored
Size	55 MB	16 MB
Age rating	4+	4+
Developer	Kaizen Fitness Health And Wellness LLC	Cristian Serb

In-app purchases

None

Kaizen Studio

No in-app purchases

6 purchases

VO2 Max Training

Subscriptions5

Unlimited$0.991 Month
Unlimited7 Days trial$3.991 Month
Unlimited$4.993 Months

Show 2 more

Unlimited$8.991 Year
Unlimited$11.996 Months

One-time1

Lifetime$17.99

Questions

Is Kaizen Studio free?

Kaizen Studio is free to download, with no in-app purchases.

Is VO2 Max Training free?

VO2 Max Training is free to download, with in-app purchases available.

Do Kaizen Studio or VO2 Max Training have ads?

Neither Kaizen Studio nor VO2 Max Training shows ads.

Which is updated more often, Kaizen Studio or VO2 Max Training?

Kaizen Studio ships an update every 5 months, and VO2 Max Training every 4 days. Most recently, Kaizen Studio was updated on November 4, 2026 and VO2 Max Training on November 4, 2026.