Jarn

Strength workouts on your time

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Have 30 minutes? JÄRN builds your workout. Choose your time, focus and equipment, edit the plan and log every exercise. One-time purchase after an optional 7-day trial. Have 20, 30, 45 or 60 minutes? JÄRN helps you build a strength workout around the time, equipment and training experience you actually have. BUILD A WORKOUT FOR YOUR TIME Choose your available time, training focus and equipment. Review your plan and its estimated duration before starting. The estimate includes warm-up, sets, rest and transitions. Your pace and extra breaks affect the actual time. VARIETY YOU CONTROL Choose familiar exercises, a balance or more variety. Your choices and recorded workouts help shape suggestions. Request an alternative, lock exercises you want to keep, replace or add movements, and adjust sets, reps and rest. YOUR PROGRAMS, YOUR WAY Start your suggested workout right away or save it as your own program. You can also build programs from scratch, start an unstructured workout or log an exercise directly. LOG EVERY EXERCISE Record weight, reps and sets, bodyweight exercises, timed movements, resistance bands and carries. Keep previous results close at hand. Planned targets stay separate from what you actually complete. Results from generated workouts join the same exercise history as all your other training. FOLLOW YOUR PROGRESS See exercise history, charts, completed sets, workout time and lifted volume for weight-and-repetition exercises. The body map shows muscle groups involved in your recorded exercises. Browse exercise photos, save favorites and add your own exercises. PRIVATE AND OFFLINE No app account needed. Training data is stored locally and is not collected by us. Core training and logging work offline after activating a trial or purchase. Back up and restore with iCloud. OPTIONAL APPLE INTELLIGENCE HELP On compatible iPhones with iOS 26 or later, Apple Intelligence can interpret written preferences on your device. An available model and a supported input language are required. Manual choices work without AI. English, Swedish, Spanish and French. Kilograms and pounds. Light and dark appearance. 7-DAY TRIAL. ONE-TIME PURCHASE. Try all features free for 7 days from trial activation, or buy JARN Premium directly. No subscription and no automatic charge. After the trial, a one-time purchase is required for new logs and workouts. History, corrections, backup and restore remain available, and you can finish a workout already in progress. See your local price in the app. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

• Build a workout around 20, 30, 45 or 60 minutes, your focus, equipment and experience. • Explore alternatives, lock exercises you want to keep, and edit planned sets, reps and rest. • Start right away or save your plan as a program. Results join your usual per-exercise history. • Updated Today screen with time selection and quick access to logging and unstructured workouts. • Now available in French.

Version 1.0.1

The developer, Stefan Pihlanen, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Stefan Pihlanen
    Size
    49.2 MB
    Category
    Health & Fitness
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • Mac
      Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.0 or later.
    Languages
    English and 3 more
    • English, French, Spanish, Swedish
    Age Rating
    9+
    In-App Purchases
    Yes
    Copyright
    © 2026 Pihlanen
  • Developer Website
  • Privacy Policy

    • More by Stefan Pihlanen