Flexmix

Your workout, already made

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

Your workout is built before you open the app. 191 exercises, every one explained. On iPhone and Apple Watch. One purchase — no subscription, ever. Flexmix builds your workout so you don't have to. Set your weekly split once. Every training day, open the app and today's session is already there — pulled from your muscle groups, never the same twice. Don't like what you see? Hit Randomize and get a fresh set instantly. BUILT FOR HOW YOU ACTUALLY TRAIN Pair two muscle groups in a single day. Chest and arms. Back and biceps. Legs and calves. Twelve groups to build from, and a schedule editor that takes about a minute to set up. NEVER GUESS THE FORM All 191 exercises include a demonstration illustration and step-by-step cues. Tap any card to flip it over. No searching, no videos, no leaving the app mid-set. TARGET THE EXACT MUSCLE Tap into a muscle map and pick the region you want to hit — long head, lateral head, upper trap, and more. Swap any exercise for another that trains the same area. TRACK YOUR MAXES Log a heavy and a light max for every exercise, each with its own reps and dated history. Load the barbell plate by plate and Flexmix does the arithmetic. Watch your numbers climb on a progress graph instead of trying to remember them. ON YOUR WRIST The Apple Watch app carries your whole session. Start the workout, see your heart rate and calories, check the form illustration between sets, and browse the week — with your phone in your bag. SAVE WHAT WORKS Found a session you like? Save it to a slot and load it straight back the next time that group comes around. ONE PURCHASE, NO SUBSCRIPTION Flexmix is free to use, with a full exercise library and every tutorial included. Unlock Boost once and it's yours forever — on iPhone and Apple Watch. No monthly fee, no ads, no account, no sign-up. Your data stays on your devices and syncs privately through your own iCloud.

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The developer, Justin Yu, 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
    • Justin Yu
    Size
    • 135.4 MB
    Category
    • Health & Fitness
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    • Apple Watch
      Requires watchOS 10.0 or later.
    Languages
    • English
    Age Rating
    9+
    In-App Purchases
    Yes
    Copyright
    • © 2026 Justin Yu
  • Privacy Policy

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