Sets in real time
Weight, reps and rest are captured instantly. Trend arrows compare each set against your last session on the fly.
FORGE
Strength · Data · Discipline
The log thatmakes youstronger
Every set, heartbeat and personal record in one place. Body Forge takes you from the first rep to a new physique and keeps you on track.
Featured by Apple in “Apps We Love”
640+ exercises with form◆
AI coach on gpt-5-mini◆
Dynamic Island◆
Apple Watch◆
Apple Health◆
Offline mode◆
4 languages◆
No ads◆
640+ exercises with form◆
AI coach on gpt-5-mini◆
Dynamic Island◆
Apple Watch◆
Apple Health◆
Offline mode◆
4 languages◆
No ads◆
Not just a log
Other apps record.
Body Forge understands.
A plain tracker stores your numbers and leaves you alone with them. Body Forge reads that data every day, finds the meaning and tells you what to do next.
1
Sees the context
Not a single set, but the whole picture: training, sleep, heart rate and recovery together.
2
Reads your readiness
Every morning it gives one verdict - push today, or protect yourself.
3
Tells you what to do
Not charts to decode, but a concrete move: +2.5 kg, fill the reps or deload.
How it works
One loop that runs every day
You just train and live. The app does the rest by itself - and knows you better with every day.
01→
It collects data
Sets, weight and records from your workout. Heart rate, sleep, HRV, steps and calories from Apple Health. Body measurements. Nothing typed in by hand.
02→
The AI analyzes
It reads a 6-week trend, catches plateaus, computes readiness from sleep and stress, weighs your weekly load. Health comes before progress.
03
It gives a decision
Back comes no abstraction, but specifics: what to load today, where to push, where to back off and when to rest.
↻And it repeats every single day - sharper each time
Features
Everything for the lift. Nothing else.
Every screen is built for one-handed use - right between your sets.
A ready plan for every day
Splits, supersets, strength, cardio and circuits. Activate a program in two taps or build your own.
Personal records on autopilot
The app spots a new max and logs it without you lifting a finger.
A rest timer that never gets lost
The countdown lives in the Dynamic Island and on the Lock Screen, with a haptic when it is time.
Live workout
Log a set in one second
Weight, reps and rest in a couple of taps. Last session is already on screen, the timer counts itself. The phone never steals your workout.
1
Last session in front of you
See what you lifted last time and know instantly where to push.
2
Supersets and any type
Strength, cardio, circuits, supersets - all in one flow, no switching.
3
A shareable workout card
A clean card with your session summary - share it in one tap.
AI Coach
A coach that knows your context
A conversational coach on OpenAI gpt-5-mini pulls your workouts, measurements, sleep and Apple Health data by itself. Nothing to copy - just ask. It has two priorities: health first, then visible progress.
Model
gpt-5-mini
OpenAI via a secured Vercel proxy
Key
server-side
never in the app, every request is Firebase-signed
Flexibility
no update
the model changes on the server, not in the App Store
✦ online
AI Coach
gpt-5-mini · Body Forge
Break down my last workout
Your lat pulldown holds 82.5 kg × 10/9/8 - up a set over 3 weeks. Today's readiness is green, so fill the bench to 8 reps, then go +2.5 kg.
Slept 5 hours, should I go heavy?
5.0h vs your usual 7.1 drops readiness to amber. Hold last session's weights, work technique and stay 1-2 reps shy of failure.
What the coach sees on its own
The context is built automatically before every reply - you never paste anything in by hand.
🏋
Recent workouts
Up to 10 sessions: the latest set-by-set with your notes, older ones compact. It sees volume, heart rate and calories.
📋
Active program
It knows your split, your exercises and which day is today - advice fits the plan, not a vacuum.
❤
Apple Health
Resting HR, HRV, VO₂max, steps, exercise minutes and sleep - last night and the weekly average.
📐
Body and weight
Measurements (chest, arm, etc.) and your weight trend over 7 and 30 days, height, BMI.
🏃
External workouts
Running, cycling, Apple Watch, Strava from Apple Health over 14 days - to weigh your total weekly load.
📊
Stats and streaks
Total workouts, this week, the 4-week average, 30-day volume, your current and longest streaks.
How it analyzes
Not generic theory - decisions on your real numbers, applied in a strict order, so the advice never contradicts itself.
Readiness
Today's readiness verdict
Before any load, the app deterministically computes one verdict from sleep, pain notes, the stress index and HRV. That same verdict flows into every reply - so the coach physically cannot suggest a bump on a day you should be resting.
Green · ready
Recovery is fine - you can move the progression forward.
Amber · moderate
Hold last session's weights, no increases. Technique and tempo.
Red · low
Drop working load 10-15%, trim volume. No increases of any kind.
📈
Double progression
Fill the reps to the top of the range first, then add load. Suggestions are concrete: +2.5 kg, +5 kg, +1 rep or +1 set - and only on a green day.
⚠
Plateau detector
Spots lifts whose best set (weight × reps) hasn't moved in over two weeks and proposes a deload, a tempo change, a range tweak or a swap.
🔄
Deload and periodization
If a lift has climbed for weeks with no back-off, it suggests one lighter session to consolidate - framed as smart tactics, not a setback.
🧠
6-week memory
It keeps the trajectory of your top lifts by week and judges momentum, regression and progress from the trend, not a single session.
🩹
Pain stop
It catches pain, injury or illness in your notes - never pushes load, offers an alternative or rest, and points you to a doctor. It never diagnoses.
Four personalities to pick from
🪖
Strict
No sentiment. You're not on vacation.
🤝
Friendly
Support and a calm tone.
🧪
Technical
Numbers, biomechanics, RPE.
🔥
Motivator
Emotion and energy. Lights you up.
🔒The OpenAI key stays on the server, every request is signed with your Firebase ID token - there's no key in the app. The server picks the model and reasoning depth, so it can change with no App Store update.
What it's all for
So you grow steadily, not by guesswork
All this analysis exists for one thing - so every workout moves you forward, not in circles. No guessing, no overtraining, no lost months.
📈
No stalling
The plateau detector spots a stuck lift before you do - and offers a way out before you lose motivation.
🛡
No overtraining
On a red day the app trims the load itself. Progress doesn't break on burnout or injury.
🎯
Data-driven gains
Adding weight and reps isn't a feeling - it's the real trend of your top lifts.
💪
A shape you can see
Measurements and weight over time show your body is changing - not just numbers in a log.
Library
A knowledge base, not just a log
Inside is a whole library so you don't google mid-set. Form, supplements, hormones, sleep and nutrition, all in one place and explained in plain language.
640+ exercises
form, breakdown and video · 9 categories
📋
Training
Guide
A guide to building a session: how to set a split, how many sets and how to progress.
💊
Supplements
Top picks
Supplements without the marketing: what actually works, how and why to take it.
❤
Hormones
Real impact
How testosterone, cortisol and sleep shape growth and recovery - and what's in your control.
🌙
Sleep
Recovery
Why there's no muscle without sleep. How recovery decides more than an extra set.
🥗
Nutrition
For your goal
Protein, calories and deficit that make sense. How to eat for your goal without starving.
Programs
A ready plan for any goal
29 programs for mass, strength and fat loss - from your first day in the gym to advanced. Activate in two taps or build your own.
MassStrengthFat lossFor beginnersFor advanced
1
By level and experience
From no experience to 6+ months. Each program is honest about who it's for.
2
The active program leads
The app knows which split day is today and opens your workout with no questions asked.
3
Or build your own
Splits, supersets, strength, cardio and circuits - a builder for your schedule.
Progress
Your level grows with every workout
Form, streak and rewards in one place. You can see you're moving forward.
21
workouts
14 days in a row in rhythm
26h 43m
under load
total time for the period
337
sets
logged without a miss
Gold
next reward
9 more to the goal
Ecosystem
Everything on hand - and on your wrist
The Dynamic Island, Apple Watch and AI coach work as one.
🏝
Dynamic Island
Timer and heart rate always on screen, even when the app is in the background.
⌚
Apple Watch
The workout mirrors to your watch, with a haptic on the wrist when rest ends.
❤️
Apple Health
The app pulls your Apple Health data - heart rate, activity, sleep and weight.
✦
AI Coach
Analyzes your Apple Health data and workouts, breaks down every session and answers based on real numbers.
640+
exercises with form and video
100%
offline - your data lives on device first
4
interface languages
0
ads or forced subscriptions
Inside the app
See how it looks
Reviews
What people say on the App Store
Real ratings from users - pulled straight from the App Store.
4.9average rating from 11 App Store reviews
I'd like to thank the developer for this app; it's a great help with my workouts, promoting progress and keeping me motivated.
Biliiiii11111
1. Добавить больше пушей для мотивации 2. Возможно платную подписку для глубокого анализа тренировки А так приложение супер
Faithlost1337
Очень удобно все сделано ,программы тренировок,упражнение ,бжу питание.
Falcone0106
Nice app, its very good trending apps
Pharaohe66
It’s like apple fitness, but more better and with AI
Head of bananas
I've been using it for a week. The best part is that my last workout's stats are right there on the screen - no need to scroll through anything. The timer on Dynamic Island is awesome. It feels like you're leveling up your character, only in real life instead of a game.
AliRude
Excellent app! It helps organize all the necessary exercises in a structured way, provides a comprehensive approach and motivates you not to stop after achieving your goals. As a bonus it offers a lot of useful information.
IreneRude
This is honestly one of the best fitness apps I’ve used. The interface is clean, the workouts are easy to follow, and the progress tracking keeps me motivated every day. I really like that the app works for both beginners and experienced users. The workout plans feel well-structured, and the variety prevents training from getting boring. I’ve noticed real improvements in my strength, consistency, and overall fitness since I started using it. Definitely worth downloading if you want to stay disciplined and make real progress
RustamEdmonton
The Body Forge Journal
How to train so it actually works
No-fluff breakdowns of progression, recovery and technique. Log every set, read your body from the data and stop spinning your wheels.
Grip the iron. We've got the rest.
Download Body Forge and turn every workout into data that drives a new physique.
FAQ
The short version
No forced subscriptions and no ads. Download it and train.