Best iOS Weight Lifting App for iPhone & Apple Watch (2026)

Most lifters want the same few things from a tracking app: log a set without slowing down, never lose a session, and see whether the numbers are going up. We compared the five most popular iOS lifting apps side by side: Musklr, Strong, Hevy, Jefit and Fitbod. The comparison covers the seven things that actually decide which one you keep: price, exercise library, Apple Watch support, offline logging, ads, muscle heatmaps and built-in programs.

For the job most people are really asking about, which is registering sets quickly on an iPhone or Apple Watch, Musklr came out on top. It has the largest exercise library, a live muscle heatmap, two-tap logging and a full Apple Watch app, and full features run about $2 a month. We've flagged where each competitor beats it too, because several do.

The best iPhone workout tracker apps, compared

Green best, amber middle, red weakest in each row; grey = not documented.

Prices and features verified 1 July 2026; subscriptions vary by region. Musklr Pro is $2/mo billed annually; Hevy's Pro price is approximate. "Not published" means the vendor doesn't list an exercise count. "Not stated" means offline use isn't documented on the vendor's own pages (it may still work). Hevy shows muscle-group volume charts rather than a body heatmap.

A closer look at each app

Musklr: fastest logging, best value

Musklr is built for one job: registering sets as fast as possible, on iPhone and Apple Watch. It has the largest exercise library here, a live muscle heatmap, live heart rate on the watch, and it logs offline with no account. It's free to use for as long as you like, and Pro is about $2 a month for unlimited routines and cloud sync. If you want the quickest, most complete way to log your own training, it's our pick.

See what Musklr does →

Strong: simplest, fastest logging

Strong earns its name by getting out of the way. It's a clean, minimal logger with a capable Apple Watch app, so you can run a whole session from your wrist. The free tier caps you at three routines, and the moment you want more, Pro is $4.99/mo (with a one-time lifetime option), more than double Musklr's roughly $2 a month for full features. If you want the least-cluttered way to record sets and don't need analytics or a big exercise library, Strong is hard to beat.

Hevy: best free tier

Like the others, Hevy is freemium, but its free tier is the most generous here: no ads, unlimited workouts, up to four saved routines, and a big, active community of 14M+ athletes with a polished routine planner. If getting the most without paying is your priority, start with Hevy. It leans on muscle-volume charts rather than a live heatmap, and it doesn't publish an exercise count, so there's nothing to weigh against Musklr's published 2,000+ movements. But as a free tier, it's the one to beat.

Jefit: deepest analytics and instructions

Jefit is the one for data lovers: 1,400+ exercises with guided instructions, expert-built plans, a muscle-recovery breakdown, and some of the deepest progress analytics in the category, backed by a huge, long-established user base. The trade-off is ads on the free tier, which Elite ($12.99/mo) removes. If you want structure and detailed reporting more than speed, Jefit delivers.

Fitbod: best automated programming

Fitbod is the most hands-off app here. Its algorithm builds and adapts each session around your recovery, so it tells you what to train next. There's no permanent free tier (a short trial, then from $12.99/mo), and it's built around guidance rather than fast manual logging. If you want a coach that programs for you, Fitbod leads. That's a genuinely different job from the one Musklr does.

Why Musklr wins for logging

Musklr is built around one job, registering sets as fast as possible, and it brings the tools of a heavier app to that job without slowing down. That combination is why it's our overall pick.

• Largest published library. 2,000+ movements with video instructions. Jefit lists 1,400+, Fitbod 1,000+, and Strong and Hevy don't publish a count.
• Two taps per set. The whole app is tuned so the common case, logging the set you just did, is the fastest path on both iPhone and Watch.
• The best Apple Watch app here. Run a whole workout from your wrist, with live heart rate and a Live Activity that keeps the session a glance away. It's a full app, not a stripped-down companion, and it's included free.
• A live muscle heatmap while you log. It updates during the session rather than in a report you open later. Strong, Jefit and Fitbod have heatmap or recovery views too, but Musklr's is live.
• A full logging toolkit. Rest timers with haptics, estimated 1RM, volume and RPE tracking, and dropsets. It has the depth of an analytics app but keeps logging quick.
• Offline-first. No signal in the basement gym? Every set still logs and syncs once you're back online.
• Affordable. Full features cost about $2 a month billed annually, a fraction of the $12.99 a month Jefit or Fitbod charge.

And the free tier is not a trial that runs out. You can log your training free, forever, fully offline, with no account, and your data stays on your device. Pro is for serious lifters who want more: unlimited routines, your full training history, and cloud sync and backup across devices.

And Musklr won't auto-generate your workouts. If you want an algorithm to program for you, that's Fitbod. But if you want the fastest, most complete way to log training you've planned yourself, Musklr is it.

See everything Musklr does →

How we compared

We compared each app on the seven decisions lifters actually weigh. The figures come from primary sources, mainly App Store listings and each app's own site, checked on 1 July 2026, and we kept the per-figure sources on file. Where a vendor doesn't publish a number, such as an exercise count, or a behaviour, such as offline logging, we label it rather than guess.

Musklr is still in TestFlight beta, so its community is smaller than the established apps here, and we've said where competitors lead on maturity, analytics, price or automated programming. Prices and tiers change and vary by region, so confirm the current price in the App Store before you subscribe.

Frequently asked questions

Is there a free lifting app for iPhone?

Yes. Most of these are freemium, with a free tier you can use indefinitely. Hevy's free tier is the most generous, with unlimited workouts, no ads and up to four routines. Strong's covers three routines, and Musklr's covers one program and two workouts with no ads. Jefit's free tier shows ads. Fitbod is the exception, with no permanent free tier, just a short trial. If you do decide to pay, though, Musklr's Pro is the cheapest full-feature tier here, about $2 a month.

Which lifting app works on Apple Watch?

All five have Apple Watch apps, but Musklr's is the most complete. It adds live heart rate and a Live Activity, and lets you run a whole session from your wrist, all included free. Strong and Hevy also support full logging from the wrist, and Jefit and Fitbod support the watch as well. For wrist-first logging, Musklr is our pick.

What is the best free workout tracker for iPhone?

For the most generous free tier you can train on without paying, Hevy leads, with unlimited workouts, no ads and up to four routines. Strong's free tier is a solid minimalist logger with three routines. Musklr's free tier is smaller by design. It shines once you're logging seriously and want the fastest workflow, with the cheapest full-feature upgrade if you decide to pay, about $2 a month.

Strong vs Hevy: which is better?

Strong is the leaner, faster logger with a capable Apple Watch app, but it puts more than three routines behind a paid Pro tier. Hevy has the more generous free tier (unlimited workouts, no ads) and a larger community. Pick Strong for minimal logging, Hevy for the most generous free tier. Worth a look either way: Musklr matches Strong's logging speed with a bigger published library, for about $2 a month.

Do workout apps have ads?

Most quality lifting apps avoid ads. Musklr, Strong, Hevy and Fitbod are ad-free (Fitbod is subscription-only). Jefit shows ads on its free tier and removes them with Elite. If an ad-free experience matters, everything except Jefit's free tier qualifies. Musklr stays ad-free even on its free tier.

Which workout app has the most exercises?

Of the apps that publish a number, Musklr leads with 2,000+, ahead of Jefit's 1,400+ and Fitbod's 1,000+. Strong and Hevy don't publish an official exercise count, so we don't rank them here. For most lifters, any of these libraries is more than enough.

What's the best app to log gym sets on iPhone?

For raw logging speed, Musklr: two taps record a set, and it works offline. Strong is a close second for minimalist logging. If you'd rather the app program the session for you, Fitbod fits better. For deep analytics after the fact, Jefit.

Do these apps work offline at the gym?

Musklr is offline-first, so every set logs without a connection and syncs later. Strong also supports offline logging. Hevy, Jefit and Fitbod don't clearly document offline behaviour, so we don't claim it either way. Check before relying on it if your gym has no signal.

Which app has a muscle heatmap?

Musklr shows a live muscle heatmap as you log. Strong has a Muscle Heat Map, and Jefit and Fitbod both show muscle-recovery views (Fitbod's drives its programming). Hevy shows muscle-group volume charts rather than a body heatmap. So a heatmap-style view is common. What sets Musklr apart is that its version updates live during the session.

So which is the best iOS app for lifting weights?

There's a winner for every priority, but one app does the core job best:

• Best overall for logging lifts: Musklr. The fastest way to register sets on iPhone and Apple Watch, with the largest exercise library, a live muscle heatmap and full features for about $2 a month.
• Best free tier: Hevy. The most generous free plan, with no ads and unlimited workouts. Pro is optional.
• Best automated programming: Fitbod. Its AI builds and adapts your sessions for you.
• Deepest analytics: Jefit. The most detailed reports and progress data.
• Simplest logger: Strong. Minimal and fast, with a clean, pared-back interface.

For most lifters, the ones who know their plan and just want to log it quickly, Musklr is our pick.