5/3/1 Workout - Zen Labs

5/3/1 Workout - Zen Labs

531 Strength Training

212 ratings
8 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • August 6, 2018
  • June 16, 2026

Features

5/3/1 Workout - Zen Labs screenshot #1 for iPhone
5/3/1 Workout - Zen Labs screenshot #2 for iPhone
5/3/1 Workout - Zen Labs screenshot #3 for iPhone
5/3/1 Workout - Zen Labs screenshot #4 for iPhone
5/3/1 Workout - Zen Labs screenshot #5 for iPhone
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About

This app simplifies strength training by automatically calculating and tracking progress for the 5/3/1 program. It focuses on key compound lifts and offers a guided approach for beginners and advanced users alike. The first two weeks are free to help you start building strength.

Automated 5/3/1 progress calculation
Focus on compound movements
Guided workouts for beginners
Progress tracking with graphs
Warmup calculator
Weight and rep calculator
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What's New in 5/3/1 Workout

1.20

June 16, 2026

◎ Music player library optimizations ◎ Track your progress and achievements across the Zen Labs network! ◎ More minor bug fixes and optimization Our community is our number one priority. We answer each and every email. Most of our updates have been suggestions from our community. Questions? Comments? Suggestions? See why our community has made us the #1 5K training app. contactus@zenlabsfitness.com

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Subscription plans

Zen Unlimited Pass Monthly

Music, stats & pro features in all our apps!

$4.991 Month
7 Days trial
How to cancel 5/3/1 Workout subscription ⁉️

User reviews

Almost bought it

I tried the free trial and would have liked to purchase this… except for the fact that it’s missing the extremely important ability to write down and record notes for each workout. Example: you felt weak because you didn’t sleep, or your nursing an injury, or forgot to eat before your workout, or you had to cut your volume in half for better recovery that particular day, etc
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Abandoned their customers

I purchased the bundle with all of the running apps 4 years ago, but now due to their subscription model they have taken away the program from those who already paid for it. I feel taken advantage of, charging nearly $15 for a software bundle only to make it unusable due to a business model change. It’s unfortunate that everything has gone to a “subscription model.” Especially when the model doesn’t really give anything new from what was previously available. Stay clear, there’s better options out there.
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Response from developer

We apologize for any frustration you may have experienced with the change to a subscription model. We understand that this can be difficult, and we want to assure you that we made this decision with the best interests of our users in mind. We've added many new features, including music streaming, which we believe enhances the overall user experience. Please email us at contactus@zenlabsfitness.com with your original download date receipt, and we’ll certainly do our best to work with you. Thank you for your understanding.

New user

Couldn’t figure out how Jen to start or stop working! I thought there will be guided instructor voice ! May b I need some time to get used to it

Response from developer

Hi, to have a better understanding, could you please send us a message via contactus@zenlabsfitness.com.

I’d expect more from a paid subscription

The workout ceases to follow the 5/3/1/Deload rotation after the first cycle, and gets stuck in the 3x5 after that. The only way to fix it is to start the program over, which requires wiping your data from the app.

Also, there is no mechanism to get your plan to adapt if you find the weights laid out by the app are too light.
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Response from developer

Hello! We appreciate your feedback! We will take a look at what we can do to implement those features in future updates! Thank you!

It’s a mixed bag.

Overall it’s an okay app. I like the timer and the auto calculations feature. I like that I can add in custom assistance exercises. I don’t like that I can’t add weight values to assistance exercises lower than 45 lbs (there’s a big range between body weight and 45 lbs, especially for some assistance exercises). I don’t like that there’s no option to add notes, either to exercises or the whole workout. App also tends to glitch a lot and you have to cancel and restart a workout to fix it.

Overall these imperfections make it come off like a cheap paint-by-numbers development. I’m going to be looking for others after my cycle is over.
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Response from developer

Hi, sorry to hear you’ve been experiencing these issues. Please contact us at contactus@zenlabsfitness.com and share as much information as you can. We will definitely investigate your case. Thank you for posting!

Developer apps

FAQ

What does the 5/3/1 Workout app do?

This app automates the calculation and tracking of your progress for the 5/3/1 strength training program. It focuses on key compound lifts like squats, bench press, deadlifts, and overhead press, providing a structured approach to building strength.

How does the 5/3/1 Workout app help me start training?

The app makes starting easy by allowing you to enter your current 1 rep max (or select a beginner option). It then automatically calculates your tailored program, guiding you through four simple workouts per week over blocks of four weeks.

Is the 5/3/1 Workout app free to use?

The app offers the first two weeks of the program for free. After the trial, it operates on a freemium model, with an optional 'Zen Unlimited Pass' providing access to all pro features across Zen Labs Fitness apps.

What are the main features of the 5/3/1 Workout app?

Key features include automated progress calculation, a focus on compound movements, a guided workout structure, progress graphs to track personal records, a warmup calculator, and weight/rep calculators. It also offers accessory workouts for advanced users and Apple Health integration.

Who is the target audience for the 5/3/1 Workout app?

This app is designed for anyone interested in strength training, particularly those following or wanting to follow the 5/3/1 program. It's suitable for first-time lifters who find weight training intimidating, as well as experienced veterans looking for an efficient tracking tool.