Rust Get Rust

AI strength coaching

Your program doesn't know you slept four hours.

Rust asks before every session — sleep, energy, soreness, and where you're sore — and the coach changes today's workout on the answer. Not a printed plan that treats every Tuesday the same.

Free for seven days. No card to start.

Out now on iPhone and Android. Rust is live on the App Store and on Google Play. Seven days free, no card, and nothing to wait for.

iPhone Android Both out now

Real screen recording. Sleep 2, energy 2, lower back sore — and Marcus dials the session back before it starts.

The difference

Most apps hand you a plan. Rust asks first.

Every lifting app can store a program. What none of them do is ask how the week actually went — and then act on the answer.

A static program
  • Same sets, same reps, same day of the week — whatever kind of week you had.
  • Went heavy on deadlifts yesterday and your lower back is lit up? It doesn't know.
  • Changing it is your job, in a spreadsheet, using judgment you may not have yet.
Rust
  • A 20-second check-in before you lift: sleep, energy, soreness 1–5, plus the areas that are sore.
  • Your coach reads it and can cut the sets and reps, swap an exercise, or add and remove movements — writing the change into the actual workout.
  • It tells you what it changed and why, in the voice you picked. Type it or say it out loud.

Unprompted: "my shoulder's been bugging me on presses" — and he swaps the exercise out of the session, not just in the chat.

How it works

Three steps, then it runs.

No spreadsheet, no plate math, no "which program should I pick."

1

Pick a coach and your gear

Six coaches to choose from. Then tell it what you actually train with — one tap for Commercial gym, Home gym — dumbbells + bench, Garage gym — barbell + rack or Bodyweight only, or pick from the full catalog of 121 items across 10 categories. Everything it builds comes from that list.

2

Check in before you lift

Sleep, energy and soreness, each 1–5. If soreness is 3 or higher it asks where — twelve body areas, chest through knees. Takes about twenty seconds, and you can skip it.

3

Train — the weight moves itself

Every exercise starts from what you actually lifted last time. Hit the target reps and it adds 5 lb. Fall short and it holds the same weight. Come in under 70% of the target and it backs off 10%. Automatically, every exercise, every session.

121
pieces of equipment in the catalog
10
categories, free weights to studio
6
coaches, each with its own voice
12
body areas you can flag as sore

In the gym

The session already knows your last one.

Open the workout and every exercise is already loaded with the weight and reps to beat, worked out from your own history. Log a set, take the rest timer, move on. The coach is one tap away for the whole session.

  • Weights that move on their ownTarget reps hit → +5 lb next time. Short of it → same weight again. Under 70% → back off 10%.
  • Swap anything, mid-sessionForm tips, a demo video, "don't have this", supersets and notes on every exercise.

A real generated session — eight exercises, sets pre-loaded, logged one tap at a time.

The coaches

Six coaches. Six actual voices.

Not one chatbot with six name tags. Each has their own background, their own opinion about your training, and their own speaking voice — press Preview to hear one before you pick, and Listen on any message to hear it read aloud.

The real picker. Hear each voice before you commit to one.

What's actually in it

Built, shipping, in the binary.

No roadmap items on this list.

  • It remembers what you told itInjuries, preferences, goals and equipment quirks persist between conversations. You mention the shoulder once, and it's still there next month.
  • It reads your health dataSteps, latest heart rate and active calories from Apple Health or Health Connect — which is also how Garmin and Apple Watch data gets in, without a separate vendor login.
  • Food logging in plain languageDescribe the meal, it estimates calories and macros, and tracks against your targets as a weekly range rather than a daily budget.
  • History, PRs, trends and a feedFull workout history, records per lift, volume week over week, muscle-recovery readouts, plus weekly challenges against people you invite.

Home screen: today's pick, your week, and muscle recovery across seven groups.

Straight answers

What Rust is not.

Worth saying out loud before you install anything.

  • Not a medical app. The coaches won't name a diagnosis, won't build a plan around a medical condition, medication or pregnancy, and won't push an aggressive deficit. When something crosses that line they say so and point you to a doctor, pharmacist or registered dietitian. That's enforced in the software, not a disclaimer.
  • Newer on Android. The iPhone version shipped first and has had more months of real use behind it. The Android build is out on Google Play and gets the same updates — it has just had fewer people put miles on it. If something looks wrong on your phone, say so and it gets fixed.
  • Not a team. One person builds Rust. Bugs get fixed fast because there's nobody to hand them to.

Pricing

Seven days free. No card.

$19.99/ month, after the trial
  • The free week starts the moment you make an account — there is no card field to fill in first.
  • Everything is included in the one price. No coach locked behind a tier, no credit packs.
  • Cancel any time. A subscription bought in the app is managed in your App Store or Google Play account, the same place you cancel it.

Get Rust

It's out. Both phones.

Seven days free, and there's no card field to fill in first. Download it, make an account, and the first check-in takes about twenty seconds.

Free to start on both. $19.99 / month after the first week, cancel from your store account any time.