K WORKOUT | KSYNC vs Musku
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
K WORKOUT | KSYNC
Discover and save personalized fitness routines, track your progress, and access a vast library of exercises. Coaches can share workouts, manage clients, and monitor engagement. Includes nutrition scanning and music stations to enhance your fitness journey.
- Personalized workout builder
- 3,000+ exercise library
- Workout sharing via link/QR
- Client management for coaches
- Nutrition scanning and recommendations
- 40,000+ music stations
- Progress tracking and analytics
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KWORKOUT makes fitness simple, shareable, and coachable. Discover workouts from creators and coaches, open them instantly by link or QR code, and save your favorites inside K WORKOUT. With KSYNC, coaches can share workouts, track engagement, and manage clients in one place. Fitness for everyone. Build your perfect routine in seconds. Choose your equipment and target muscles, or let our Certified Trainer GPT help design a plan for you. From first reps to PRs, no equipment to full gym setups, KWORKOUT adapts to your level. • 3,000+ exercises • Personalized workout workflow • Save favorite workouts • Progress tracking & analytics • Multi-language support KSYNC Coaching for creators and coaches. Turn shared workouts into real client relationships. Post a workout anywhere by link or QR code, let users complete it instantly, and manage client activity inside K WORKOUT. • Share workouts anywhere • Link and QR workout access • Track clicks, saves, and engagement • Manage clients privately • Build your coaching business inside the app Smarter nutrition. Scan barcodes, discover nutrition info instantly, and save your favorites. If something doesn’t fit your goals, K WORKOUT can suggest better-rated alternatives. • Save food favorites • Quick nutrition ratings • Smart recommendations Music that moves you. Dial in the vibe for lifting, cardio, or everyday life. Explore over 40,000 stations, filter by Top 100, and save your favorites for easy playback. • 40,000+ searchable music stations • Top 100 filters • Save favorites for quick access Whether you’re training on your own, following your favorite creator, or coaching clients through KSYNC, K WORKOUT gives you the tools to move, improve, and stay consistent.
Musku
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Musku, your strength training log. Less time on your phone, more time training. Musku is a workout tracker built for the gym: fast, intuitive, ad-free and without social networking. Log your workouts, track your progress and focus on what matters. WORKOUT TRACKING MADE SIMPLE Create your own workout templates or choose from ready-made programmes. Start a workout, move through your exercises and log your sets in seconds. Musku automatically fills in your previous weights and reps. Add exercises, edit sets and adjust your workout as you go. PLAN YOUR TRAINING WEEK Schedule your workouts for the days and times that suit you. Musku reminds you when it's time to train and shows your next workout on the home screen. AI-POWERED WORKOUT ANALYSIS Musku prepares a detailed summary of your recent workouts (up to 100) or your entire training programme, with key metrics already calculated: training frequency, sets per muscle group, performance and personal records. Copy the summary into your preferred AI (ChatGPT, Claude or Gemini) to identify strengths, spot imbalances and explore ways to improve. Nothing is shared with an AI unless you choose to do so. SEE YOUR PROGRESS Automatically track: - Personal records: weights, estimated 1RM and volume. - Workout calendar and training consistency. - Sets per muscle group. - Your biggest improvements. - Monthly summaries, badges and achievements. Clear statistics, calculated from the workouts you already log. APPLE HEALTH INTEGRATION Automatically sync your strength workouts with Apple Health, including duration and estimated calories. Track your body measurements and sync your weight both ways. A REST TIMER THAT STAYS VISIBLE Set a rest time for each exercise and keep an eye on the countdown from your Lock Screen or Dynamic Island with Live Activities. TRACK YOUR BODY CHANGES Log your weight, body fat and measurements: arms, chest, waist, thighs, calves and more. View each measurement's history and charts to see how your body changes over time. WORK OUT WITH APPLE WATCH Train without reaching for your iPhone. Start a free workout, add exercises, adjust sets and view your workout summary right from your wrist. YOUR WORKOUTS, ONE TAP AWAY Start a workout from your Home Screen with the Musku widget. Choose between two customisable sizes, with 4 or 8 shortcuts to your favourite workouts. FREE TO START, PREMIUM TO GO FURTHER Use Musku for free with up to 3 workout templates and essential statistics. Upgrade to Premium for unlimited templates, advanced statistics and AI analysis of your training programme. Cancel your subscription at any time. For people who take their training seriously without overcomplicating it. Terms of Use: https://musku.app/terms/ Privacy Policy: https://musku.app/privacy/
Screenshots
Verdict
The clearest difference is in-app purchases: K WORKOUT | KSYNC at none against Musku's 3. K WORKOUT | KSYNC also leads on device support (4 vs 2). Musku's advantage is update cadence (every 2 days vs every 8 days). On price, ads and iOS requirement 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. Musku sells 3 in-app purchases, starting at $2.89 per month. K WORKOUT | KSYNC asks for nothing beyond the download.
K WORKOUT | KSYNC ships an update every 8 days, Musku every 2 days. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.
| Parameter | K WORKOUT | KSYNC | Musku |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 8 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, Apple Watch |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 50 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | Kintsugi LLC | Julien Legrand |
In-app purchases
K WORKOUT | KSYNC
No in-app purchases
Musku
- Musku Premium Monthly$2.891 Month
- Musku Premium$12.991 Year
- Musku Premium Annual14 Days trial$17.991 Year









