Musku

Musku is a smart strength training journal built specifically for iPhone users. It helps people track their workouts by recording every set, rep, and personal record. The app was created by Julien Legrand and follows a simple rule: log your work, and you will progress. It is designed to be fast and distraction-free so users can focus entirely on their training.

Benefits

Musku offers several advantages for anyone serious about getting stronger. The app uses artificial intelligence to analyze your performance. You can send a summary of your recent workouts to popular AI assistants like ChatGPT or Claude. This feature gives personalized feedback on weak points and suggests adjustments to improve your routine. The interface is very efficient because it remembers your weights from previous sessions. This means you can start a new workout by just confirming the numbers instead of typing them again. The app also works offline, so you can log your sets even without Wi-Fi. Your data syncs automatically once you are back online. Musku provides clear visual tools to track your growth, such as heatmaps of your sessions and charts showing muscle distribution. It also tracks personal records, estimated one-rep max, and total volume. Users can earn badges and achievements to stay motivated. The app integrates with Apple Health to automatically record your workout duration and estimated calories. Finally, Musku respects your privacy by having no ads, no social feed, and no ad tracking. All your data stays on your device unless you choose to share it.

Use Cases

This tool is perfect for fitness enthusiasts who use an iPhone and want to organize their gym sessions. It is useful for people who follow specific workout programs or those who prefer to build their own custom templates. Musku helps users who want to see their progress over time through detailed statistics and monthly summaries. The app is also great for people who need quick reminders. The iOS widget lets you launch a workout from your home screen with a single tap. The live activity feature shows a rest timer on your lock screen or Dynamic Island so you do not have to open the app constantly. The Quiet Coach feature sends daily tips about neglected muscles or useful stretches directly to your dashboard. It is suitable for anyone who wants a clean, ad-free environment to focus on their physical goals without interruptions.

Pricing

The app is free to download from the App Store. However, there is an optional upgrade called Musku Premium. This version costs $12.99 and unlocks unlimited session templates and the full set of advanced statistics. Users can cancel their subscription at any time without any commitment.

Vibes

As of the latest information, Musku has not received enough ratings or reviews to display an overview on the App Store. This suggests that the app is relatively new and may still be gathering feedback from its early users.

Additional Information

Musku is developed by Julien Legrand and is categorized under Health and Fitness. The app requires iOS 15.1 or later to run on iPhone and iPod touch devices. It supports the English language and is rated for ages 9 and up due to health and wellness topics. The file size is 56.7 MB. The copyright belongs to Julien Legrand in 2026.