Comparison

Metal Workout vs Whizz

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

Head to head
About

Metal Workout

Features
Read full description

METAL WORKOUT = SPORT & YOGA + METAL Motivation is in the head, but not only: it’s also in the ears! Yann Heurtaux (guitarist and BPJEPS AGFF graduate sports coach) and Matthew K. Heafy (guitarist-singer and accomplished sportsman) join forces to propose Metal and Rock fans workouts full of riffs! The application includes personalized training programs designed by Yann Heurtaux and yoga sessions. All levels, from beginner to advanced, on a Metal music selection, without time constraints, at home or in the gym, with or without equipment, and unlimited access, METAL WORKOUT adapts to you and your objectives. Programs available: > 100% bodyweight > Bodyweight + small fitness equipment > Gym Plus Metal Yoga sessions. Plus calorie calculator. Also, Matthew K. Heafy will be your coach for an exceptional 45-minute session that he has specially prepared with Ashtanga Yoga, muscle strengthening, and introduction to Brazilian Jiu Jitsu. 100% bodyweight without material. Music and coaching: Matthew K. Heafy. Try the “One Track Challenge” = every day a different song and exercises to give all you’ve got in a short time! Music acts as a powerful motivator that helps to improve your performance and to achieve your goals. It increases endurance by 15% and reduces perception of effort by 12%. But for this to work you need your music, the one that talks to you, to your body, to your mind, to your guts. “Music helps to push your own limits, to destroy them.” (Yann Heurtaux) "Metal is a passion and for many a lifestyle, just like sports can be. And both have this tremendous ability to bring people together.” (Matthew K. Heafy) Together, let's share this incredible alchemy between the power of this music and the energy of sport, to gain endurance, muscle strengthening, go the distance at festivals and concerts, become indestructible in the pit, or simply feel more zen! With appropriate and regular training, plus Metal, nothing can stop you! Terms of use : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Whizz

This app provides personalized indoor cardio training plans generated by AI. It tracks your performance with detailed statistics, offers global challenges, and supports various cardio machines for weight loss, fitness improvement, or competition preparation.

Highlights
  • AI-generated personalized training plans
  • Supports various cardio machines
  • Calculates fitness indicators (VO₂max, BMI)
  • Tracks session progress and statistics
  • Global community challenges and rankings
  • Instant access to training history
Features
Read full description

Finally, an app dedicated to indoor cardio training! With personalised training plans generated by artificial intelligence (AI). Discover Whizz, the first mobile app dedicated to indoor cardio training, designed to support you in your gym or home workouts. Whether you use a treadmill, bike, rowing machine, elliptical trainer, stepper, climber... Whizz generates training plans, records your cardio sessions and gives you accurate and detailed statistics on your performance... Why choose our Whizz app? • It generates intelligent programmes: our AI learns from you, adjusts the intensity and guides you to progress. • It calculates your fitness indicators: life expectancy gained, maximum oxygen consumption (VO₂max), maximum aerobic speed (VMA), physiological age, body mass index (BMI), personal bests... your performance will hold no more secrets. • Clear and motivating statistics: track your progress session after session and stay motivated. • Global challenges: compare yourself to the Whizz community, challenge your friends, climb the rankings. • No more taking photos of your cardio machine screens: with Whizz, you can access your history instantly and easily. • Train anywhere, anytime: at the gym, at home or on the go. Whizz offers different types of training programmes: • Weight loss: burn maximum calories with targeted and effective workouts • Getting back in shape: rediscover the joy of exercise with gentle and progressive sessions • Cardio training performance improvements: improve your VO₂max, VMA and ability to sustain longer and more intense efforts • Competition preparation: our AI adjusts each session to your fitness level so that you arrive ready, motivated and confident on the day of your competition. Results you'll love • More motivation thanks to a programme that adapts to you. • Visible and measurable progress in just a few weeks. • The pleasure of pushing yourself, without ever injuring or exhausting yourself. Download Whizz today and join the new generation of cardio training.

Screenshots

Metal Workout4 screens
Whizz4 screens

Verdict

The call

Metal Workout and Whizz are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Metal Workout sells 1 in-app purchase, starting at $3.99 per month and Whizz sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Metal Workout ships an update every 5 days, Whizz every 9 days. The most recent releases landed on September 7, 2026 and August 1, 2026 respectively.

ScorecardNo meaningful differences
Metal Workout versus Whizz: the parameters behind the verdict, then further details
ParameterMetal WorkoutWhizz
PriceFreeFree
Rating—2.0 (1 ratings) — better
Positive reviews—71.4% of reviews
Number of ratings—1 — better
Update frequencyEvery 5 days — betterEvery 9 days
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size20 MB81 MB
Age rating4+4+
DeveloperMETAL WORKOUTOptimaSport

In-app purchases

1 purchases

Metal Workout

Subscriptions1
  • Monthly subscription$3.991 Month
2 purchases

Whizz

Subscriptions2
  • Monthly subscription1 Month trial$3.991 Month
  • Yearly subscription7 Days trial$29.901 Year

Questions

Is Metal Workout free?
Metal Workout is free to download, with in-app purchases available.
Is Whizz free?
Whizz is free to download, with in-app purchases available.
Do Metal Workout or Whizz have ads?
Neither Metal Workout nor Whizz shows ads.
Which is updated more often, Metal Workout or Whizz?
Metal Workout ships an update every 5 days, and Whizz every 9 days. Most recently, Metal Workout was updated on September 7, 2026 and Whizz on August 1, 2026.

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