Kaizer: Your Personal Trainer
Online personal training
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
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
more Hace 5 años q voy al gym. Probé varias apps en el pasado pero esta sin dudas es mil veces superior.
Hace 5 años q voy al gym. Probé varias apps en el pasado pero esta sin dudas es mil veces superior.
What's New
- You can now create your account from your coach's link and keep your workouts and history from day one.
- Added circuit notes so you can keep instructions and training details in one place.
- Improved Health Connect integration on Android to properly record your workout activity.
Fixes & Improvements
- Fixed an issue that could leave the app stuck on the startup screen.
- Improved stability when launching the app and loading your settings.
- General workout and performance improvements.
2.1.0 Aug 23
What's New
* Improved custom exercise creation so you can add them to your workouts more quickly and reliably.
* Newly created exercises now appear immediately in search.
Fixes & Improvements
* Improved chat synchronization so messages sent from other devices appear in real time.
* Fixed self-chat issues and prevented duplicate messages.
* Improved overall app stability and the exercise creation experience.
2.0.17 Aug 17
What's New
- Added a timer to help you manage your rest time between sets.
- RIR logging now follows your coach's settings for a more personalized experience.
Fixes & Improvements
- Improved workout reliability to prevent progress loss.
- Optimized weight editing during workouts.
- Improved app startup and session stability.
- Bug fixes and overall performance improvements.
2.0.16 Aug 7
What's New
- Added a new onboarding step so you can choose how you'll use Kaizer or connect with your coach using their link.
- Coaches can now manage client payments directly from the app.
- You can now generate requests with AI to save time in your daily workflow.
Fixes & Improvements
- Improved workout reliability to prevent progress loss, even if the app closes unexpectedly.
- Made real-time chats more resilient to connection issues.
- Added privacy, validation, and overall performance improvements.
2.0.15 Jul 26
What's New
- Group chats to help you stay connected with your coach and team.
- Link previews are now available in conversations.
- You can now see when each workout session was completed.
Fixes & Improvements
- Improved weekly workout progress tracking.
- Increased the exercise notes limit so you can keep more training details.
- Bug fixes and performance improvements.
2.0.14 Jul 20
In this release, we continued improving the workout experience with new training tools and a smoother app experience.
What’s new
• Drop sets: a new set type to better plan and track your workouts.
• Metric and imperial units: choose the measurement system that works best for you.
Improvements
• Session names now display correctly in your language when no custom name is available.
• The sessions overview now correctly identifies past weeks for easier progress tracking.
• Improved the email verification and password reset experience for greater reliability.
Bug fixes
• Minor fixes and general performance improvements.
2.0.13 Jul 7
In this release, we continued improving the training experience with new tools for routines, partners, and workout generation.
What’s new
• Supersets now have a dedicated experience with custom copy throughout the workout flow.
• Improved Partners: some benefits now include direct WhatsApp contact for easier access to perks and promotions.
• Faster routine generation: new routines now appear immediately while they finish generating in the background.
• Added 44 new equipment types for more accurate workout creation.
Improvements
• More consistent routine ordering after refreshes.
• Improved experience for coach-managed routines.
• General enhancements to the home screen and content refresh flow.
Bug fixes
• Fixed an issue that could cause duplicate navigation after a purchase.
• Improved routine carousel behavior to better respect manual user navigation.
• General stability and performance improvements across the app.
2.0.12 Jun 26
In this release, we’re introducing new tools to make training, communication, and getting the most out of your membership even easier.
What’s new
• Exclusive Partners: a new benefits section for Kaizer Pro users and athletes training with a coach. Discover special perks and discounts from our partners.
• Chat attachments: you can now send and receive images, videos, documents, and more directly in conversations.
• Training circuits: group exercises into rounds to better structure your workouts.
Improvements
• Pull-to-refresh support on the routines home screen for a faster and more intuitive experience.
• General performance and user experience improvements.
2.0.11 Jun 23
In this release, we continued improving the training and communication experience across Kaizer.
What’s new
• Improvements to the notification system to help you stay on top of your training.
• New scroll-to-bottom button in chat for easier navigation through conversations.
Bug fixes
• Fixed an issue that prevented back navigation when opening a workout from a widget.
• Resolved an issue that could cause exercise videos to freeze after reopening the app.
• General stability and performance improvements.
2.0.10 Jun 17
In this release, we continued improving the training experience and upgraded Kaizer’s technology stack for a faster and more reliable app.
What’s new
• Clickable links in chat: you can now open links directly from messages.
• Fewer interruptions during workouts: core exercises no longer display the RIR prompt.
Improvements
• Enhancements to training blocks for better workout organization.
• Internal improvements to workout creation and management.
Bug fixes & performance
• Upgraded Kaizer to the latest React Native and Expo technologies.
• General performance, stability, and compatibility improvements.
• Minor fixes and optimizations across the app.
2.0.9 Jun 9
In this release, we’re introducing new tools to better organize your workouts and improve exercise creation.
What’s new
• Training blocks: you can now group exercises and boards within a routine for better organization.
• Improved exercise creation: you can now add videos and assign muscle groups when creating exercises.
Bug fixes
• Fixed Health integration issues on Xiaomi devices.
2.0.8 May 22
In this release, we continue improving stability and setting the foundation for faster updates.
What’s new
• Faster updates: improved our update system to ship changes without relying on app stores.
Improvements
• Better link handling for a more reliable in-app navigation.
Bug fixes
• Minor fixes and general performance and stability improvements.
2.0.7 May 12
In this release, we continue improving your Kaizer experience with new tools to stay connected and train better.
What’s new
• Chat with your trainer: send and receive messages directly in the app, with unread message indicators.
• More exercises and videos: expanded library with clearer visual references.
Improvements
• Better routine sorting: untrained routines appear first.
• Correct assignment timing: routines now use your local date and time.
• More accurate suggested weights from the first session.
• More reliable notifications on Android.
• Faster, more stable shared links.
• Language correctly applied from first launch.
• Better suggestions when replacing exercises.
Bug fixes
• Fixed weight calculation in pulling exercises.
• Session names now always display correctly.
• Improved video playback stability.
• General performance optimizations.
2.0.5 Apr 27
Bug fixes and performance improvements for a smoother, more reliable experience.
2.0.4 Apr 17
We’re continuing to improve Kaizer to make your training experience clearer, more intuitive, and more connected in real time.
What’s new
• New exercise videos: replaced YouTube with custom animations focused on the target muscle for clearer guidance.
• Live Activities and Dynamic Island: track your workouts and rest timers in real time from your lock screen.
• RIR in trainer routines: exercises now display RIR to give you better context and precision for each set.
Improvements
• Routines are now sorted by last activity, with recently trained ones shown first.
• Haptic feedback added to the keyboard for a smoother interaction.
• New “liquid glass” UI and visual improvements.
Bug fixes
• Minor fixes and general optimizations.
• Improvements to the notification system.
2.0.3 Apr 14
We've been busy making Kaizer better for you — here's what's new in this update.
What's new
Weight memory: Kaizer now remembers the weights you use for each exercise and carries them over from routine to routine — no need to enter them again.
Exercise notes: add your own notes to each exercise, or receive notes from your personal trainer on each exercise.
When replacing an exercise, you can now search the full exercise library — not just similar ones.
Adding exercises to a manual routine is now smoother — the panel stays open so you can add as many as you want in one go.
Bug fixes
Session names now appear correctly in the app language.
The rest timer notification now fires at exactly the right moment.
Swiping on an exercise and going back now resets it to its normal state.
Creating an account now works smoothly for everyone.
General interface and experience improvements.
2.0.2 Mar 29
We've been working on something big for you — here's what's new in this update.
What's new
Trainer Marketplace: looking for a specialized trainer to guide your training? Now you can find the perfect trainer for you, subscribe, and start your new plan — all from the app.
Weight memory: Kaizer now remembers the weights you use for each exercise and carries them over from routine to routine — no need to enter them again.
Exercise notes: add your own notes to each exercise, or receive notes from your personal trainer on each exercise.
Bug fixes
Fixed a bug that sometimes caused flashes on the workout calendar.
2.0.1 Mar 15
In this release, we improved visual clarity around shared routines and refined several interface details for a more consistent experience.
What’s new and improved
• Long routine names are now truncated with “…” to prevent them from pushing the completion percentage out of the card.
• The error pill no longer overlaps the share button; the button now disappears when necessary.
• Shared routines now display a “SHARED” label to clearly differentiate them from “UPDATED” routines.
• When the share or delete button is disabled (for example, for routines shared by someone else or created by a coach), we now explain why for better clarity.
2.0.0 Mar 4
In this release, we focused on overall stability and performance improvements, and fixed an issue affecting the login experience.
Bug fixes
• Performance improvements for a faster and more stable app.
• Fixed a login issue that, in some cases, prevented users from creating an account and accessing Kaizer.
1.3.10 Feb 4
In this release, we fixed critical issues that could prevent access to the app in some cases, and we also included general experience improvements.
What’s new
• Visual improvements
• User experience improvements
Bug fixes
• Fixed an issue where the keyboard would not appear during login, preventing users from accessing their account.
• Fixed an issue where the “We couldn’t create your account” alert could appear, preventing signup completion and therefore blocking access to Kaizer.
• Fixed a routine sharing issue: if the sender had already trained that day, the routine could appear as trained for the receiver as well.
1.3.9 Feb 2
In this release, we’re taking another step forward: we refreshed our visual identity, added key new features, and refined the overall experience.
What’s new
• New app icon: we’re saying goodbye to the iconic “K”. Kaizer now has a new icon that better matches our latest branding (the K is now part of Kaizer’s history).
• Routine sharing: loved a routine and want to share it with a friend? Someone has a routine you want to add to your own? You can now share routines.
• Offline training: you can now train without an internet connection. If a workout isn’t saved, you’ll see a banner on the home screen to resend it once you’re back online.
• Visual and user experience improvements.
1.3.8 Jan 23
In this release, we updated the App Store experience for Portuguese users.
What’s new
• Updated Portuguese App Store screenshots
1.3.7 Jan 7
In this release, we continue making Kaizer more accessible for users around the world.
We added support for a new language so more people can train and use the app in their native language.
What’s new
• Added full Portuguese language support
• General user experience improvements for clearer and smoother navigation
1.3.6 Jan 3
In this release, we continue improving the social experience and onboarding flow, while fixing important issues and optimizing overall performance.
We added new ways to connect with other Kaizer users, made onboarding clearer, and significantly improved image loading speed so everything feels faster and smoother.
What’s new
• Friend search: you can now search for Kaizer users directly from the Friends tab
• New onboarding step to let us know how you discovered Kaizer
• Images now load much faster thanks to improvements in image caching
• UI improvements when displaying friend QR codes, including increased brightness for easier scanning and smoother flow
Bug fixes
• Fixed an issue where name autocomplete was triggered during onboarding
• Resolved a bug that prevented password resets in certain cases
• Fixed an issue when entering tags during onboarding that could block user account creation
1.3.5 12/29/2025
In this version of Kaizer: Gym & Fitness Planner, we focused on making your training sessions feel smoother and helping you avoid leaving workouts unfinished.
We completely revamped the notification system: Kaizer now alerts you when you leave a workout open, when your rest timer ends, and you can control everything from a new toggle in Settings. More control, fewer distractions.
We also improved navigation, scrolling behavior, and several visual elements to make the app feel more stable, clear, and polished.
What’s new
• Notifications when you forget to finish a workout
• Alerts when rest time ends
• New toggle in Settings to enable or disable notifications
• One-week free trial of Kaizer Pro so you can explore all advanced features with no commitment
• Dynamic pricing implemented worldwide to offer more accessible options depending on your region
• General improvements to navigation and workout flow
• User experience enhancements across scrolling and visual components
Bug fixes
• Improved performance when adding or deleting sets
• New sets now copy weight and reps from your actual last set for more accurate predictions
• Fixed an issue when adding time-based exercises
• Improved tag validation and better handling of camera permission requests
1.3.4 12/03/2025
What's New
- You can now create your account from your coach's link and keep your workouts and history from day one.
- Added circuit notes so you can keep instructions and training details in one place.
- Improved Health Connect integration on Android to properly record your workout activity.
Fixes & Improvements
- Fixed an issue that could leave the app stuck on the startup screen.
- Improved stability when launching the app and loading your settings.
- General workout and performance improvements.
more Version 2.1.0 Aug 23
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