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Brace AI

Brace AI — an AI personal trainer for strength training

The plan knows what happened.

Most apps store your workout. Brace answers it — it builds your program, reads every set you log, and rewrites the next session: loads, reps, swaps, and back-offs.

See today’s session How it works

Private iOS testing · Apple Watch in development · iPhone-first

Tuesday’s already written —
you just show up

Brace AI home screen: Week 1 with a loaded LEG DAY session — 60 minutes, quads and hamstrings — a daily check-in, and the ask-me-anything coach bar
Today Open the app — it’s decided

No browsing. No guessing.
Today is already written.

Brace builds your week from your goal, experience, equipment, and every set you’ve logged — and the margins tell you why each number is what it is.

Today — lower body Week 3 · 4 lifts · ~60 min
Back squat 4 × 5 · 102.5 kg · rest 3:00 was 100 — every rep clean last session. It moves.
Romanian deadlift 3 × 8 · 80 kg · rest 2:30 hold the load — add a rep before weight.
Leg press 3 × 10 · 160 kg · rest 2:00 missed reps twice — today is a re-test, not a push.
Seated leg curl 3 × 12 · 45 kg · rest 1:30 knee felt off last session. Watching it.
Every number above was decided from logged sets — not a template.
At the rack Logging that keeps up

Under the bar, the app disappears.

Logging happens between breaths: sets, load, effort, rest — thumb-sized, offline-first, no spreadsheet posture. The thinking is already done.

Brace AI active workout: goblet squat set being logged with a running timer
Set logged in two taps. Rest timer runs itself.
Brace AI progress history: LEG DAY session filed with 1 hour 1 minute training time and 5,900 kg volume
Every session files itself: 61 min, 5,900 kg moved.

Dead-zone gym?
Every set stores locally and syncs later.

  • Set 1 — squat 5 @ 102.5 kg · RPE 8
  • Set 2 — squat 5 @ 102.5 kg · RPE 8
  • Set 3 — squat 5 @ 102.5 kg · RPE 8.5
  • Set 4 — squat 4 @ 102.5 kg · RPE 9 — stalled
  • Leg curl — knee flagged, set 2
Offline logging, in detail
Coach thread Ask anything, get a plan change

A coach you can actually talk to.

Not a summary card — a coach thread that already read your session. Every answer ends in a plan change, not a pep talk.

YouKnee was talking on leg curls again.

CoachSeen — it flagged on set 2. Curls come out of your next lower-body day; hamstring work moves to hinges in a pain-free range. If it stays quiet through the week, we re-test light.

YouAnd I only have 40 minutes on Thursday.

CoachThen Thursday is bench and rows only — the two lifts that move you. Accessories fold into Saturday. Both sessions are already updated.

Adaptation After every logged session

You lift. The plan reacts.

This is the product: the session above, rewritten by what actually happened in it. The red ink is Brace.

Next session — lower body Week 4 · rewritten from your logs
Back squat 105 kg 102.5 kg · hold · 4 × 5 + back-off 1 × 5 @ 92.5 set 4 stalled at RPE 9 — consolidate, then push.
Romanian deadlift 3 × 8 9 · 80 kg 8/8/8 clean — you earned the rep.
Leg press 3 × 10 · 160 165 kg re-test passed. Load moves again.
Seated leg curl 45° back extension 3 × 12 · bodyweight → slow tempo knee flagged twice — out until it’s quiet.
You never planned any of this. You just trained.
The system Why the ink moves

Three rules. Zero vibes.

The decisions are boring on purpose — the same evidence-based progression a good coach runs, applied to your logs after every session.

R–01

Earn it, get it

Hit every rep at RPE 8 or under and the load goes up next session. Double progression on accessories: reps first, then weight.

R–02

Stalls are data

Miss reps or spike effort and the plan holds, adds a back-off set, or deloads. Fatigue and per-muscle recovery are tracked, not guessed.

R–03

Pain changes the plan

Flag a knee, a shoulder, an elbow — the exercise leaves the program and returns on a pain-free ramp. No heroics, no lost weeks.

Brace AI muscle detail: Chest at Rookie tier, 86 percent, with contributing exercises
Per-muscle tiers and recovery, from your logs.

Progress you can audit.

Every change carries its reason — tap any session and see which logged sets moved the number. General fitness guidance, not medical advice; see a physician before starting any program.

The progression engine

Status Brace AI is in private iOS testing. No App Store listing yet — the build is public here first. Apple Watch is in development as the workout-floor companion.

See the full product Read the honest self-review
Field notes Free tools & training guides

Train smarter before you ever install anything.

Programs with real tables, honest app comparisons, lifting guides, and calculators — the same thinking the coach runs, written down.

Progressive overload for beginners Learn when to add reps, load, volume, or a deload. Workout programs that actually progress 5×5, push/pull/legs, upper/lower, full body — with real tables. Best workout apps for beginners Choose an app that guides without overwhelming. Best AI workout apps Compare generators, progression planners, and coaching-first apps. Best free workout apps See what each app genuinely includes before the paywall. Best home workout apps Find apps that work with limited equipment and weak signal. Exercise library Squat, bench, deadlift — setup, mistakes, and rep ranges. 1RM calculator Estimate your max from a hard set without testing it. Brace AI vs Hevy, Strong, and Fitbod Honest comparisons against the apps you already know.
Browse the full training library
Straight answers FAQ

Asked constantly.

Is Brace AI available?
Brace AI is in private iOS testing. The public App Store listing is not live yet, so use this site for product details and join the update list when you want to be notified.
What is Brace AI?
Brace AI is an AI personal trainer and workout tracker for strength training. It builds your program, lets you log every set, adjusts your next workout, and gives you a coach-style chat thread for questions, debriefs, and check-ins.
How is Brace AI different from Hevy or Strong?
Hevy and Strong are excellent workout loggers if you already know what to do. Brace AI is built for people who want the app to write the program, explain the plan, and progress workouts from their logged performance.
How is Brace AI different from Fitbod?
Fitbod is strongest as a workout generator. Brace AI is designed more like a coaching relationship: a plan over time, a persistent coach thread, post-workout debriefs, and changes when your schedule, equipment, soreness, or injuries change.
Do I need to know how to program my own workouts?
No. Brace AI builds your program from a short setup chat about your goals, experience, schedule, and equipment. You can still edit any session, swap exercises, or tell the coach to change the plan.
Does Brace AI support Apple Watch and offline logging?
Brace AI is iPhone-first, with Apple Watch support in development as the workout-floor companion. Offline workout logging keeps completed sessions moving; chat, swaps, and cloud sync resume when you are back online.
Is Brace AI free?
You can set up your profile, get a program, and log workouts for free. A subscription unlocks unlimited AI coaching, advanced progression, long-term analytics, and deeper follow-up.
Is Brace AI good for beginners?
Yes. Beginners benefit most, because the app removes the hardest part: deciding what to train and when to progress. It builds a structured plan, explains each session in plain language, and adjusts as you learn the lifts.
Can an AI app replace a personal trainer?
For programming, progression, and day-to-day questions, Brace AI does the same job a remote coach does, at a fraction of the cost. For hands-on, in-person technique coaching, a human trainer still has a place.
Does Brace AI work for home and garage gyms?
Yes. You set your available equipment during setup, and the coach programs around it, whether that is a full rack, adjustable dumbbells, or bands. Offline logging means a weak garage signal never interrupts a session.
What equipment and goals does Brace AI support?
It supports strength, muscle gain, and general fitness goals across barbell, dumbbell, machine, and bodyweight setups. You can train at a commercial gym, a home gym, or while traveling, and the plan adapts to what you have.