Under the Hood

How the app remembers what you like, where you train, and how to finish on time

Under the Hood · · 4 min read

What Is a Workout Generator, and How Does It Know What You Did Last Time?

A workout generator is a tool—app, website, or spreadsheet formula—that builds your training session for you instead of you writing it out by hand. The good ones remember your equipment, your cranky shoulder, and how much time you actually have; the random ones just shuffle exercises with no memory of your last session at all. I've used both kinds over the past two years, and the gap between them shows up by about week three.

Under the Hood · · 4 min read

The Settings You Never Have to Find

I can change almost everything about my training plan just by telling the FlexFit assistant in plain language — equipment, injuries, exercise variety, muscle priorities, and weekly schedule are all editable through conversation, not menus. Every one of those chats also updates a real settings page behind the scenes, so nothing is hidden or temporary. This piece walks through the five settings I use most and how I talk to the assistant about each one.

Under the Hood · · 4 min read

AI-Powered Personal Trainer App vs. Generic Workout App: Which One Remembers You?

An ai powered personal trainer app should remember your equipment, your last session's weights, and how much time you actually have — not reset to a blank slate every time you open it. In my testing, most apps labeled 'AI' just generate a random routine from a template each visit, while a smaller group (FlexFit included) carry your history forward so the plan adjusts and sessions get quicker to finish. The 'AI' label isn't the real differentiator — memory is.

Under the Hood · · 3 min read

What Is a Randomized Workout Generator—And Why FlexFit Skips the Randomness

A randomized workout generator is a tool that shuffles exercises, sets, and reps in no particular order, usually with zero memory of what you did last time. I tested a few of these last year and kept getting lunges three days in a row while my bench press sat untouched for two weeks. FlexFit uses the same pool of movements but builds each session on purpose, remembering what I liked, where I train, and what I actually finished.

Under the Hood · · 4 min read

How to Build a Suspension Trainer Workout Plan an App Actually Remembers

A suspension trainer workout plan works best when the app logs your straps, anchor height, and door/rack setup once, then builds every session around what you actually have instead of asking again. I set mine up in FlexFit last winter and haven't re-entered my equipment since. Below is exactly how I did it, including the anchor-point details that used to trip up my old spreadsheet routine.