Introducing AI form feedback and AI-powered training coach. Flex AI is the world’s first AI personal trainer. The new update (Flex 3.0) introduces real-time AI Form Feedback and Lex—an AI persona that adapts your workout plan, analyzes your lifts, corrects your form instantly, and answers questions about training, recovery, and nutrition.
Flex AI: Your AI Personal Trainer
Flex AI: Your AI Personal Trainer
I’ve always loved group fitness for the daily variety, but once I went back to the gym I found myself repeating the same routine for months. That’s a big part of why I’m so excited to be part of the team building Flex AI and Lex (the AI trainer). I wanted to bring that variety back. Now I’m getting new, personalized workouts every day that fit perfectly into my routine. Using it myself has been awesome.
Really impressed with this app. The workouts actually adapt to how I’m performing, and the form feedback has helped a ton. Super easy to use and makes the gym feel way more structured.
Camocopy
I think calling it "world’s first AI personal trainer" is a bit misleading as there are already quite a few alternatives, also from big providers. Despite this I like the design and straightforward onboarding.
@aminniri @artem_goryaev
Flex AI: Your AI Personal Trainer
@artem_goryaev @jim_engine Totally fair point, “AI personal trainer” has been used loosely by a lot of products. What we mean by world’s first is a full, end-to-end personal training experience that includes real time form feedback, rep by rep error detection, and exercise specific coaching, not just a chat interface or a static plan generator.
When we started 7.5 years ago, nothing like that existed. That’s why we ended up filing a patent for our form feedback system, there was no prior art for models that could detect specific lifting errors, rep by rep, directly from a smartphone camera. That technology is what finally made a complete “AI trainer” experience possible.
Our whole mission is to make the level of guidance you’d get from a great coach accessible to the 99% of people who can’t afford one. So far, the reception has been incredible, and we’re just getting started.
Camocopy
@artem_goryaev @aminniri Thanks for your explanation :)
I always get distracted in the gym in between my sets with the urge to doom scroll on my phone. I thought there was no hope for a change... until my friend told me how she was logging her workouts distraction-free in the gym with her Apple Watch.
She showed me Flex AI and I've been hooked ever since. The Apple Watch experience is the best I've found in the fitness market for a phone + distraction free workout session, and the UI is a joy to use. Sharing my workouts and progress with friends has been a fun way to keep in touch with my friends abroad too!
Flex AI: Your AI Personal Trainer
So proud to be part of the team bringing Flex 3.0 to life after years of work. We poured a lot of love into making the AI interaction feel seamless—can't wait to see you all crush your workouts with it!
I’m personally loving the AI workout generator. It solves the problem of doing the same old exercises and keeps the gym fun and fresh.
Flex AI: Your AI Personal Trainer
The workout generation is a life-saver; ensures I never get bored.
Flex AI: Your AI Personal Trainer
The feature I'm most excited about is the AI-enabled auto-progression -- I can just do my workouts, not having to worry about switching up my weights or reps, knowing that my set values are being optimized for every workout. Also, "Savage Lex", the AI personal trainer, is hilarious; keeps me coming back session after session.