IronOS Strength

Strength is Elemental

Only for iPhone

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

iPhone

Three ways to train: with a coach, on your own, or with AI. Your AI coach reads your actual training log and adapts your program every week. Free for 14 days. IronOS Strength is a free workout logger built for anyone serious about getting stronger. Log every set, track your progress, and measure your strength over time. Work with a coach, coach yourself for free, or let AI coach you. AI COACHING A real coach, built into the app. A guided intake learns your schedule, equipment, and goals, then IronOS writes your program using its own programming logic, powered by Claude. From there it reads your training log: your logged sets, your weight progression, your feedback on how each session went. Check-ins on fatigue, sleep, and life stress adjust your volume and intensity. Miss a day and your week reshuffles itself. DURABILITY SCORE A strength retention metric that measures how well you're holding onto your strength as you age. Built on established powerlifting standards including DOTS normalization and IPF age coefficients, the score tells you how much of your strength you're keeping, without ever needing to test a 1RM. LOG WITH PRECISION Pre-calculated warmups, automatic plate math, and RPE-based autoregulation. IronOS shows you exactly what to load, tracks your rest, and captures every rep. No spreadsheets, no guesswork. TRACK WHAT MATTERS IronOS tracks PRs automatically across every rep range, so a 5-rep best counts as much as a new single. The Progress tab charts your top sessions over time for every tracked lift. COACH INTEGRATION Working with a coach? They see every set as you log it. They can add notes to individual exercises, leave session-level feedback, and review your form check videos. All in one place. FORM CHECKS Record and upload videos mid-workout with full context attached. Your coach reviews them alongside your sets, weights, and RPE, not in a separate thread. BUILT FOR BARBELL TRAINING Configurable bar weights, plate inventory, cable stack settings, and deadlift start weight. Equipment that matches your gym, not a generic default. APPLE HEALTH Sync bodyweight automatically. Your Durability Score stays current without manual entry. Built for lifters who care about the long game. SUBSCRIPTION IronOS is free to use. AI Coaching is an optional auto-renewing subscription: free for 14 days, then $7.99/month. Payment is charged to your Apple ID account when the free trial ends. Your subscription renews automatically unless canceled at least 24 hours before the end of the current period. Cancel during the trial and you won't be charged. Manage or cancel anytime in your Apple ID account settings. Terms of Use: https://ironos.app/terms Privacy Policy: https://ironos.app/privacy

  • 5.0
    out of 5
    7 Ratings

What's new in 2.1.1 Light launch screen and a light app icon. The app now opens to a white launch screen when your iPhone is in light mode. You can also pick a light home-screen icon under More, then Appearance. Build your own warmups. Turn auto warmup off and swipe right on a working set to add warmup rows by hand. They are never overwritten by the auto pyramid, and they carry over to your next session of that lift. Customized auto warmups carry over too, as long as the working weight and reps match. Demo videos from your coach. When your coach attaches a video to an exercise, a play icon appears next to its name in the logger. Tap it to watch inline. Technique cues. Exercises can carry a short reminder your coach writes once; it shows up every time you log that lift. Convert a warmup to a working set. Long-press your top warmup set when it turns out to be your first real set. Form checks. The app nudges you to film in landscape, and the comment box on a set now says clearly what it is for. Logger polish. One Finish button instead of a checkmark plus Finish. Long exercise names shorten to standard gym abbreviations. Fixed-rep prescriptions prefill the reps. Cable exercises label the base load as system weight. Fixes. Editing a saved workout in My Workout Library no longer loses your changes when you back out. Resuming a workout no longer starts a fresh draft or shows a stale coach update. Weights no longer show floating-point noise. Set ranges no longer collapse to N-N, and single-set prescriptions drop the redundant "1 x". Skipping an exercise closes the swipe panel and keeps the post-workout comment box. Timed holds highlight correctly. Edit Days on an active Elemental program reopens the right setup sheet. Athletes who trialed AI coaching before joining a coach no longer get AI check-in notifications. A coach who signs in here is pointed to the coach portal instead of landing in an empty account. The version footer in More shows the version you are actually running. Accessibility. Every icon-only button now has a label for VoiceOver.

The developer, Data Driven Athlete LLC, 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 Linked to You

    The following data may be collected and linked to your identity:

    • Health & Fitness
    • Contact Info
    • User Content
    • Identifiers
  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Health & Fitness

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

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

Seller
  • Data Driven Athlete LLC
Size
  • 51.8 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Data Driven Athlete LLC