Comparison

Twinsb App vs Kaizen

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

Head to head
About

Twinsb App

This app offers personalized workout plans, exercise videos for proper form, and progress tracking. It also includes nutritional guidance with meal logging, calorie recommendations, and healthy recipes. Access all training programs within the app for a comprehensive fitness journey.

Highlights
  • Customizable workout sessions
  • Exercise video demonstrations
  • Progress tracking and logging
  • Integrated charge calculator
  • Nutritional tracking and calorie recommendations
  • Healthy recipe library
  • Access to all training programs
Features
Read full description

DÉCOUVRE NOTRE APPLICATION, LA TWINSB APP ! Que tu sois débutante ou experte, cette application va t’apporter tout ce dont tu as besoin pour atteindre tes objectifs ! Séances clé-en-main ou sur mesure : la possibilité de suivre des séances de folie crées par nos soins, ou de créer tes propres séances ! Tous les exercices en vidéo pour une parfaite exécution et ne pas te blesser ! Suivi de tes progrès : la possibilité d’enregistrer tes charges et tracker ton évolution. Recommandation et estimation des tes charges par rapport à tes performances précédentes grâce à un calculateur intégré dans l’app. Journal d’entraînement : un calendrier pour organiser tes semaines d’entraînement et planifier tes séances. Suivi nutritionnel : la possibilité d’enregistrer tes repas quotidiens pour atteindre tes objectifs en terme de macro-nutriments, mais aussi d’avoir accès à des exemples de diète prise de masse et ré-équilibrage alimentaire. Recommandation des calories journalières par rapport à ton objectif et ton mode de vie. Des recettes saines et délicieuses : pour que tu puisses te faire plaisir tout en suivant ta diète ! RETROUVE TOUS NOS PROGRAMMES À L’INTÉRIEUR ! Tous nos programmes sont désormais disponibles sur l’application ! Encore plus ludiques que les E-books, l’appli te permettra de suivre nos programmes en notant tes charges, tes commentaires sur les séances etc… En bref, bien mieux qu’un PDF quoi ! CONDITIONS GÉNÉRALES D'UTILISATION, RESPECT DE VOTRE VIE PRIVÉE, ABONNEMENT Twinsb Fit propose au sein de l'application trois offres d'abonnements (1 mois, 6 mois, 12 mois) L’abonnement est renouvelé automatiquement s’il n’est pas annulé au moins 24 h avant la fin de l’abonnement en cours. Votre compte sera facturé pour la période d’abonnement suivante jusqu’à 24 h avant l’expiration de l’abonnement en cours. Vous pouvez gérer votre abonnement et désactiver le renouvellement automatique à tout moment en modifiant les réglages de votre compte Apple. En vous abonnant, vous acceptez nos conditions d’utilisation et notre politique de confidentialité. CGU : https://api-twinsbfit.azeoo.com/v1/pages/termsofuse Politique de confidentialité : https://api-twinsbfit.azeoo.com/v1/pages/privacy

About

Kaizen

Features
Read full description

Science-based lifting, built on progressive overload. Kaizen is a strength training tracker built around one idea: get a little better every week. Log your sets, and Kaizen tells you what to lift next time. No guesswork, no spreadsheets. KNOW WHAT TO BEAT Every set shows your target from last time. Hit the top of your rep range on every set and Kaizen adds weight. Fall short and it holds the load until you get there. That's double progression, the method coaches use, done for you. TRAIN BY EFFORT Rate each set with RPE (rate of perceived exertion). Kaizen uses it to calibrate your starting weights in week one, to adjust your targets, and to warn you when you're pushing too hard. BUILD ANY SPLIT Push Pull Legs (same days twice or A & B versions), Upper / Lower, Full Body, Bro split or your own. Pick your exercises, set your sets, and put your weak point first. SEE YOUR PROGRESS • Estimated 1RM, top set and volume charts for every lift • Personal records by rep count • Hard sets per muscle each week • A month view of every session and deload week FIX PLATEAUS EARLY When a lift stalls for three sessions, Kaizen spots it and gives you clear options: reset the reps, take a deload week or swap the exercise. DAILY CHECK-IN Thirty seconds each morning: bodyweight, sleep, energy and soreness. Kaizen turns it into a readiness score, so you know when to push and when to ease off. PRIVATE BY DESIGN Your body data (weight, height, body fat, sleep, energy, soreness) stays on your iPhone. Your workouts sync to your account so you never lose them. Delete your account and data at any time from Settings. Light and dark mode. Available in English and French. KAIZEN PRO Start with a 7-day free trial. Then choose monthly, 3 months, yearly or a one-time lifetime purchase. Prices are shown in the app in your local currency. Payment is charged to your Apple ID account when you confirm the purchase, or at the end of the free trial. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings at any time. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://kaizen.dbsq.fr/privacy/

Screenshots

Twinsb App4 screens
Kaizen4 screens

Verdict

The call

The clearest difference is update cadence: Kaizen at every 2 days against Twinsb App's monthly. Twinsb App's advantage is iOS requirement (15.6 vs 26.1). On price, ads, in-app purchases 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. Twinsb App sells 3 in-app purchases, starting at $5.99 per month and Kaizen sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Twinsb App ships an update monthly, Kaizen every 2 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 6 level
Twinsb App versus Kaizen: the parameters behind the verdict, then further details
ParameterTwinsb AppKaizen
PriceFreeFree
Positive reviews50.0% of reviews—
Update frequencyMonthlyEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS15.6 — better26.1
Further details — not scored
Size125 MB13 MB
Age rating17+12+
DeveloperBabinNoe DUBOSQ

In-app purchases

3 purchases

Twinsb App

Subscriptions3
  • Premium 1 mois7 Days trial$5.991 Month
  • Premium 6 mois7 Days trial$34.996 Months
  • Premium 12 mois7 Days trial$59.991 Year
1 purchases

Kaizen

One-time1
  • Kaizen pro lifetime$59.99

Questions

Is Twinsb App free?
Twinsb App is free to download, with in-app purchases available.
Is Kaizen free?
Kaizen is free to download, with in-app purchases available.
Do Twinsb App or Kaizen have ads?
Neither Twinsb App nor Kaizen shows ads.
Which is updated more often, Twinsb App or Kaizen?
Twinsb App ships an update monthly, and Kaizen every 2 days. Most recently, Twinsb App was updated on November 3, 2026 and Kaizen on October 31, 2026.

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