MustDuo

MustDuo

Workout tracker with AI coach

9 ratings
6 reviews
Free

Details

  • Released
  • Updated
  • May 19, 2026
  • September 2, 2026

Features

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About

This fitness app helps you build consistency and achieve your goals with real-time tracking and personalized plans. An AI coach provides guidance, motivation, and on-the-fly adjustments to keep you on track with your fitness journey.

✓Smart workout tracking
✓Personalized workout plans
✓AI fitness coach
✓Habit building features
✓Gamified fitness experience
✓Progress analytics
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What's New in MustDuo

1.6

September 2, 2026

1.6: Naya joins you mid-workout. Also new: • Progress dashboard. A strength chart for every lift (heaviest set per workout, plus an estimated max line once your reps are measured), weekly sets per muscle against the productive 10 to 20 range, a consistency ring, and one honest headline about what to fix next. Like "Barbell Row has not moved in three sessions." • One-tap rep confirmation. After each exercise: "8 reps each set?" Yes, or Edit to fix every set at once. Your charts stay honest. • Vs last time. Every session receipt now compares this workout to the last time you ran the same one. • Home Screen widget. "Your week" shows what you are training today and the week so far, in small and medium sizes. • Sign in with Apple and Google. One tap, no password to remember. Fixes: • Resumed workouts no longer lose paused time. • Chart picker fixed. • Home header now sits right on every screen size. Just lift. MustDuo handles the rest.

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User reviews

Naya is cute

I like that Naya pushesh you and keeps you accountable. I also like the demo videos that show you how to perform every exercise

Wonderful and fun experience

They just added custom templates which is my favourite, and Naya makes it cute

It does the thinking for you

I love how easy it is to modify the workout and how it does the thinking for you. It’s nice to not have to remember or manually log everything. I’m finally making noticeable progress in the gym. Plus it’s fun to use:)

User friendly and great exercise bank!

App is fun, easy to use and log workouts in, great bank of exercises!

Great workout companion

very good for tracking and managing my workouts

FAQ

What is MustDuo?

MustDuo is a fitness app designed to help users build consistency, hit their goals, and stay accountable. It offers real-time tracking, personalized plans, and AI-powered coaching.

Does MustDuo have ads?

No, MustDuo is ad-free, allowing for an uninterrupted fitness experience.

What devices does MustDuo support?

MustDuo is currently supported on iPhone devices.

What is the age rating for MustDuo?

MustDuo has an age rating of 12+, making it suitable for teenagers and older.

How often is MustDuo updated?

The latest version of MustDuo is 1.2, and it was last updated on June 27, 2026. Updates ensure the app remains reliable and features are improved.

What are the key features of MustDuo?

Key features include smart workout tracking, personalized workout plans, an AI fitness coach named Naya, habit-building tools, a gamified experience, and progress analytics.

What is the user sentiment for MustDuo?

Based on the available data, MustDuo has a perfect 5.0-star rating from 2 reviews, indicating very positive user sentiment.

Is MustDuo free to use?

Yes, MustDuo is available for free, with no cost to download or use its core features.