The Krato blog
Training guides, AI fitness breakdowns, and everything we're learning about building muscle smarter.
body scan apps · body composition
The Best Body Scan Apps for Tracking Body Fat and Muscle
Your phone can now estimate body fat from a photo. Here's how the best body scan apps compare, how accurate they really are, and which ones actually turn the result into a better training plan.
free weights
Free Weights vs. Machines: Which Builds Muscle Faster?
Free weights or machines — which actually builds more muscle? Here's what the research says, when each one wins, and how to combine them in one program.
exercise form
The Best Apps to Correct Your Form at the Gym
Some apps watch your reps through the camera. Others teach you the cue before you even set up. Here's how the form-correction apps actually differ, and which kind you need.
progressive overload
The Best Apps for Tracking Progressive Overload
Logging a weight isn't the same as knowing what to lift next. Here's how the apps built around progressive overload actually decide when to add weight, reps, or a deload — and which ones just leave that call to you.
science based lifting
The Best Science-Based Lifting Apps in 2026
Science-based lifting has gone mainstream, thanks to voices like Dorian Yates and the Huberman Lab. Here's a breakdown of the apps actually built on real exercise science — and how to tell the real thing from marketing.
strength training apps
The Best Workout Tracking Apps for Strength Training
Chasing PRs takes more than a rep counter. Here's how the top apps handle progressive overload, plate math, and program design for lifters who take their numbers seriously.
iPhone workout apps
The Best Workout Tracking Apps for iPhone
Not every workout tracker is built with iOS in mind. Here's how the top iPhone-first apps compare on the parts that matter to Apple users specifically.
beginner workout apps
The Best Workout Tracking Apps for Beginners
Logging your first few months in the gym shouldn't require a spreadsheet or a coaching certification. These are the workout tracking apps that make the learning curve painless.
exercise form
Why Form Matters More Than the Weight on the Bar
The research on range of motion, technical breakdown, and injury risk — and why good form is the single biggest lever you have in the gym.
ai fitness apps
The Best AI Apps for the Gym in 2026
AI is changing how people train — from form correction to fully adaptive workout plans. Here's a breakdown of the AI gym app categories worth knowing, and what to look for in each.