MustDuo vs Pibu
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MustDuo
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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MustDuo is your lifting partner that plans your fitness journey and adapts as you progress, helping you train smarter and reach your goals. Meet Naya, your personal coach and biggest cheerleader. She knows your goals, your plan and your recent training, so you can chat with her about your workouts, ask questions, or adjust your session when you need an easier day. Log each set with a tap, or pair the MustDuo Tracker to count reps for you. Watch your progress in charts, workout receipts and Apple Health. Whether you're new to lifting or chasing your next PR, MustDuo takes the guesswork out of training, makes every workout count, and helps you build a habit that lasts. YOUR PLAN, YOUR WEEK Choose your goal, experience level, and training schedule. MustDuo builds your personalized weekly plan and adapts it when life gets in the way. Swap exercises, shorten sessions, lighten a workout, or move it to another day with Naya. NAYA Your personal coach, right in your pocket. Ask questions, get training guidance, and adjust your workouts when life gets in the way. WORKOUTS Follow your personalized workout with pre-filled sets and reps, easy set tracking, and smart rest timers. Spend less time on your phone and more time focused on your lift. EXERCISE LIBRARY Explore 200+ exercises, most with HD demo videos, to help you learn proper form and train with confidence. PROGRESSIVE OVERLOAD, HANDLED Progressive overload made simple. MustDuo remembers your lifts and gradually adjusts your weights as you hit your targets, helping you consistently challenge yourself and get stronger. THE DASHBOARD See your strength, training volume, and consistency at a glance. Track trends over time and get clear insights on what to focus on next. YOUR WORKOUT RECEIPT See everything you accomplished: volume, reps, time, and a fun real-world comparison. Compare each workout to your previous session and share your progress. THE WINS TAB Build momentum with streaks, personal records and your workout receipts, and invite friends to train with you. Earn bananas and level up on your profile. THE MUSTDUO TRACKER, IN EARLY ACCESS Pair the MustDuo Tracker and it counts your reps, changes the weight and moves you through your workout without touching your phone. The tracker is in early access, and the app is fully functional without it. APPLE HEALTH Keep your fitness data connected. Sync your workouts with Apple Health and see your training alongside the rest of your activity. TRY IT FIRST Start a workout or plan your week from the first screen. Do 3 workouts as a guest before creating an account. Just lift. MustDuo handles the rest.
Pibu
This app analyzes your skin using AI from a selfie to create a personalized morning and evening skincare routine. It tracks your skin score over time and offers a private space for your skincare journey. Premium features unlock full analysis and product integration.
- AI-powered cosmetic skin scan
- Personalized daily skincare routines
- Skin score and progress tracking
- Private on-device photo history
- AI companion for skincare questions
- Shareable progress cards
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Pibu is your cosmetic skincare companion. Take a selfie and Pibu reads what is visible, oiliness, redness, hydration look, and texture, then builds you a morning and evening routine that fits your goals, your budget, and the time you actually have. Track your skin score over time, see what changed since your last scan, and keep a private, on-device photo history if you want one. Your photos are never stored on our servers, they are read once to build your routine, then discarded. What is inside: • A cosmetic skin scan powered by AI, oiliness, redness, hydration look, and texture, explained in plain language, never medical jargon. • A personalized routine that adapts as your skin changes. • A skin score and trend line, so progress is something you can actually see. • Ask Pibu, a friendly AI companion for quick skincare questions. • Shareable progress cards for the moments that feel worth celebrating. • A gentle, private space. No ads, no third-party tracking, your data stays yours. Pibu offers cosmetic guidance only. It is not a medical device and does not diagnose or treat any condition. For a skin concern that affects your health, please see a dermatologist. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Pibu Terms of Service: https://mypibu.app/terms Privacy Policy: https://mypibu.app/privacy
Screenshots
Verdict
The clearest difference is monetization model: MustDuo at free against Pibu's freemium. Pibu's advantage is iOS requirement (15.5 vs 18.5). On price, rating, review sentiment and ratings volume there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for MustDuo against 5.0 for Pibu. Both are backed by a comparable volume of ratings — 17 and 9 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
MustDuo ships an update fortnightly, Pibu every 3 weeks. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | MustDuo | Pibu |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (17 ratings) | 5.0 (9 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 17 — better | 9 |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Freemium |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 18.5 | 15.5 — better |
| Further details — not scored | ||
| Size | 59 MB | 78 MB |
| Age rating | 12+ | 12+ |
| Developer | MustDuo | Deepak Karani |
Customer experience
MustDuo
Pibu
In-app purchases
MustDuo
No in-app purchases
Pibu
No in-app purchases








