Comparison

Kaizer vs ATHRIX

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

Head to head
About

Kaizer

This AI-powered fitness planner creates hyper-personalized workout routines based on your goals, limitations, and available equipment. It intelligently adapts your training over time to ensure continuous progress and prevent burnout.

Highlights
  • AI-powered routine creation via natural language
  • Hyper-personalized plans based on user data
  • Smart progressive overload and weight updates
  • Exercise replacement suggestions
  • Professional coaching principles integrated
Features
Read full description

Your trainer already uses Kaizer. This is the app you train in together. In Kaizer your trainer sends you your routines, follows your progress, adjusts whatever needs adjusting, chats with you, asks for form videos and plenty more. All of it in one place, without leaning on three other apps. NO TRAINER YET? Browse the marketplace inside the app. Every profile shows how that coach works, their specialties and whether they train online, in person or both. Subscribe to the one that fits and they are notified the moment you join. YOUR SESSIONS, IN DETAIL Sets, reps, load, rest. Supersets, circuits and dropsets when your plan calls for them. Every exercise ships with an illustration of the muscle it works, so you know what you are aiming at before you lift. ASSISTED PROGRESSION Week over week, Kaizer writes the loads of your upcoming sessions from what you actually lifted. You always know what to do when you walk into the gym, and the weight on the bar keeps moving. SMART REPLACE Machine taken? A movement you cannot do today? Kaizer suggests alternatives that keep the point of the exercise intact, so swapping one leaves the rest of the plan standing. EVERYTHING IN ONE PLACE - Direct chat with your trainer: text, photos, files and voice notes - Full training history, streaks and progress your trainer sees too - 1,500+ exercises with illustrations - Apple Health sync and Live Activities while you train - Rest timer that runs on your lock screen TRAINING ON YOUR OWN? You can also use Kaizer without a trainer. Describe what you want in plain language — four days a week, bad knees, dumbbells only — and Kaizer builds a complete structured program in seconds, and keeps adapting it as you log your work. Kaizer works in Spanish, English and Portuguese, in 20+ countries. Terms of Service: https://kaizer.app/en/terms-and-conditions Privacy Policy: https://kaizer.app/en/privacy-policy

About

ATHRIX

Features
Read full description

Entrená mejor. Evolucioná más rápido. Todo en un solo lugar. ATHRIX es la plataforma para atletas híbridos y coaches que quieren llevar el entrenamiento a otro nivel. Olvidate de los entrenamientos por WhatsApp, las planillas perdidas y el seguimiento desordenado. Con ATHRIX podés centralizar tu planificación, seguir tu progreso y mantener toda tu preparación conectada en una sola app. Diseñada para atletas híbridos, Hyrox, Funcional, Fuerza, Running y Cross Training. Para atletas - Recibí entrenamientos desde tu coach - Visualizá tu planificación en un solo lugar - Registrá tus resultados y progreso - Seguimiento más claro y organizado - Comunicación más simple con tu coach Para coaches ¿Sos coach y querés gestionar atletas con ATHRIX? - Ingresá a: app.athrix.com - Gestioná atletas de forma profesional - Escalá en clientes sin invertir más tiempo - Organizá planes y seguimiento - Centralizá la información de tus atletas - Mejor experiencia para tus clientes ¿Por qué ATHRIX? - Todo conectado - Entrenamientos, progreso y seguimiento en una sola experiencia. - Diseñada para híbrido - Creada específicamente para las necesidades de atletas híbridos y de rendimiento. Hyrox, Fuerza, Running, Cross Training, etc. - Más claridad para atletas y coaches - Menos caos. Más foco. Mejor seguimiento. - Tu historial siempre con vos - Tu evolución y progreso quedan guardados en un solo lugar. ATHRIX está construida para la nueva generación de atletas amateurs que entrenan con mentalidad profesional.

Screenshots

Kaizer4 screens
ATHRIX4 screens

Verdict

The call

The clearest difference is in-app purchases: ATHRIX at none against Kaizer's 11. On price, update cadence, 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. Kaizer sells 11 in-app purchases, starting at $3.99 per 7 days. ATHRIX asks for nothing beyond the download.

UpkeepUpdate frequency

Kaizer ships an update every 10 days, ATHRIX every 5 days. The most recent releases landed on October 5, 2026 and October 4, 2026 respectively.

Scorecard1 real difference · 9 level
Kaizer versus ATHRIX: the parameters behind the verdict, then further details
ParameterKaizerATHRIX
PriceFreeFree
Rating5.0 (9 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings9 — better—
Update frequencyEvery 10 daysEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.0 — better
Further details — not scored
Size121 MB43 MB
Age rating4+12+
DeveloperKAIZERAlexis Valin

In-app purchases

11 purchases

Kaizer

Subscriptions10
  • Pro Weekly3 Days trial$3.997 Days
  • Pro Monthly3 Days trial$8.991 Month
  • Trainer Plan — $39.99$39.991 Month
Show 7 more
  • Pro Yearly7 Days trial$39.991 Year
  • Trainer Plan — $59.99$59.991 Month
  • Trainer Plan — $79.99$79.991 Month
  • Trainer Plan — $99.99$99.991 Month
  • Trainer Plan — $109.99$109.991 Month
  • Trainer Plan — $129.99$129.991 Month
  • Trainer Plan — $159.99$159.991 Month
One-time1
  • Pro Lifetime$89.99
None

ATHRIX

No in-app purchases

Questions

Is Kaizer free?
Kaizer is free to download, with in-app purchases available.
Is ATHRIX free?
ATHRIX is free to download, with no in-app purchases.
Do Kaizer or ATHRIX have ads?
Neither Kaizer nor ATHRIX shows ads.
Which is updated more often, Kaizer or ATHRIX?
Kaizer ships an update every 10 days, and ATHRIX every 5 days. Most recently, Kaizer was updated on October 5, 2026 and ATHRIX on October 4, 2026.

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