Workout planning + detailed tracking

Launching soon in the United States

Know whatto train.

Four13 Max is a workout tracker app that helps you choose a plan, track every workout, and see your progress—all in one place.

Guided planning. Detailed tracking. Training built around you.

See how Four13 Max takes you from choosing a plan to reviewing your progress.

How Four13 Max WorksDownload links coming soon

Available at launch in the United States, in English, with imperial and metric measurement support.

Screens shown reflect the current Four13 Max experience and may evolve with future app updates.

Four13 Max active-workout screen moving through exercises and logged sets in a live training session. — Screens shown reflect the current Four13 Max experience and may evolve with future app updates.

PlanBuild a training week that fits your goals and schedule.

TrainFollow your workout and track the details that matter.

ReviewSee your history, progress, consistency, and personal records.

30-day Premium access included

Experience Premium before deciding what fits you.

Every new Four13 Max account begins with 30 days of Premium access—free. No credit card is required, and you will not be automatically charged when the 30 days end. Afterward, you decide whether to continue with Premium or use Four13 Max Free.

No credit card required. No automatic billing.

From plan to progress

From choosing a workout plan to building real momentum.

Four13 Max connects workout planning, active training, workout tracking, and performance history in one focused experience. No scattered notes. No guessing what comes next. Just a clearer way to train.

Start

Start with a workout plan built around you

Answer a short questionnaire and receive a recommended weekly training plan based on your primary goal, preferred number of training days, and limited shoulder or knee considerations. It gives you a clear place to begin while keeping you in control.

Plan

Make the workout plan fit your week

Choose your training days, move workouts when life changes, replace or remove sessions, or regenerate the week. Use official Four13 Max workouts, return to saved workouts, or create your own.

Train

Stay focused while Four13 Max tracks the details

Log sets, repetitions, weight, time, distance, rounds, holds, calories, and other exercise-specific details without leaving your workout. Previous performance can remain close at hand, giving you useful context during the session.

Four13 Max active-workout screen showing exercise sets, previous-session values, weight, repetitions, and a rest countdown.

Time

Keep every training interval within reach

Open stopwatch, countdown, interval, Tabata, EMOM, and AMRAP timer presets without switching to another app. Choose the timing mode that fits the workout in front of you.

Four13 Max Training Timer showing stopwatch, countdown, and interval modes with the stopwatch ready to start.

Review

See the progress behind every workout

Review completed workouts, training history, progress summaries, streaks, and personal-record calculations. Every logged session becomes part of a clearer picture of your training consistency.

Four13 Max completed-workout details showing duration, set count, estimated calories, and logged exercise sets.

Capable by design

The structure is guided. The workout is still yours.

Workout plan control

Your plan is built to be changed

Move, replace, remove, or regenerate workouts. Choose official Four13 Max sessions, use saved workouts, or create your own.

Workout tracking detail

Track the details each workout demands

Strength training, conditioning, bodyweight sessions, and timed workouts can require different information. Four13 Max lets you record the fields that apply to the exercise in front of you.

Built-in workout timers

Keep your workout moving

Use stopwatch, countdown, interval, Tabata, EMOM, and AMRAP timer presets without leaving your training session.

Woman performing a supported one-arm dumbbell row in a dark strength-training gym.

Man checking his phone while seated on a workout bench between sets.

Built for where you are

Confidence for a first plan. Control for the next personal best.

Beginners: Start with confidence

Get a clear training path, supportive guidance, and a structured place to begin without feeling overwhelmed.

Intermediate users: Build consistency

Follow purposeful workout plans, adjust your schedule, track your progress, and keep building momentum.

Advanced users: Train with greater control

Customize sessions, track detailed performance, organize demanding workouts, and review the numbers that matter to your next personal best.

Why Four13 Max exists

Training should build momentum—not add more confusion.

Four13 Max was created because tracking workouts is not enough when you are still left wondering what to do next. Everyone deserves a clear path forward, whether they are completing a first workout or chasing a new personal best. Four13 Max brings planning, training, progress, and encouragement together so more people can keep showing up and working toward becoming stronger than they were yesterday.

Strength for life

Build strength for the life that matters to you.

Strength is about more than what you can lift. It is the capacity to participate in your life, feel more confident in your training, and keep showing up for the people and responsibilities that matter to you.

Train for today. Build for everything ahead.

Frequently asked questions

Questions about Four13 Max?

Who is Four13 Max for?

Four13 Max is built for people at every stage of training—from beginners who want clear direction to experienced gym users who want more control over planning, logging, and reviewing their workouts. It gives you structure when you need it and flexibility as your training evolves.

Does every new account receive 30 days of Premium access?

Yes. Every new account begins with 30 days of Premium access—free. No credit card is required, and you will not be automatically charged when the 30 days end. Afterward, you decide whether to continue with Premium or use Four13 Max Free.

Does the Four13 Max Coach use AI?

No. At launch, the Four13 Max Coach recommends a weekly plan using your primary goal, preferred number of training days, and limited shoulder or knee considerations. It does not provide medical guidance or use every questionnaire answer to select your plan.

Can Four13 Max help me choose a workout or training plan?

Yes. Answer a short questionnaire and Four13 Max can recommend a weekly plan using your primary goal, preferred number of training days, and limited shoulder or knee considerations. You can review the recommendation and change it before or during your training week.

Can I change the recommended training plan?

Yes. A recommendation is only a starting point. You can move workouts to different days, replace or remove scheduled workouts, or regenerate the week. You can also use official Four13 Max workouts, return to workouts you have saved, or create your own.

Can I create my own workouts?

Yes. Build and save custom workouts, choose the exercises you want to perform, and edit the workout as your training needs change.

Which workout timers are built in?

Four13 Max includes stopwatch, countdown, interval, Tabata, EMOM, AMRAP 8, and AMRAP 15 timer presets, so common workout timing tools stay close to your training session.

Does Four13 Max support circuits and supersets?

Circuit and superset features are still in development and are not part of the current launch experience. Four13 Max does include interval, Tabata, EMOM, and AMRAP timer presets for timed training.

Which measurement units are supported?

Four13 Max supports pounds and kilograms for weight. Distance preferences support miles and kilometers, while applicable exercise fields can also use meters, yards, and feet.

Is Four13 Max only for gym workouts?

No. You can create and log custom workouts using the fields that fit the activity, including repetitions, weight, time, distance, calories, rounds, and holds. More official workout options can be added as the training library grows.