Best Workout Tracker App in 2026: 7 Apps and a Notebook Compared

The best workout tracker app depends on what you want it to do. If you only want to log your sets and watch the numbers go up, Hevy and Strong are the safe picks: both are free to download and run on iPhone, Android and Apple Watch. If you want the app to decide what you lift each day, look at Fitbod or JEFIT. If you want a ready-made program from a known coach, Boostcamp or StrengthLog. RepZet fits if you want a routine built from a body scan around your weak points and would rather type your sets than tap through fields.

How this comparison was made

Everything below comes from each app's official website and US App Store page, checked on October 17, 2026: the features each developer lists, what the free version includes when the listing says so, and the supported devices. I didn't time each app with a stopwatch, so the "How you log" column describes how you enter a set, not a measured speed.

Prices, ratings and download counts are left out. Prices change by country, and some of these apps give different user numbers on their website and on their App Store page. All seven are free to download, and most sell a subscription that unlocks more.

The apps side by side

Hevy

Hevy is a log first and a social app second. You build routines, tap through sets, mark warm-up, drop and failure sets, and get a rest timer for each exercise. The graphs cover volume, best weight, total reps and estimated one-rep max. You can follow friends, see their workouts and copy their routines, or keep your profile private.

It runs on more devices than anything else here: iPhone, Android, Apple Watch, Wear OS and a web version for planning routines on a computer. According to its App Store listing, Hevy Pro adds unlimited routines, full graph history, unlimited custom exercises and advanced measurements.

Best for: lifters who already know what they want to do and want a quick, free log, especially if their friends use it too.

Strong

Strong keeps things minimal. Its App Store listing says it is built around progressive barbell programs such as Starting Strength or StrongLifts 5x5 and adapts to any routine. You get set tags, supersets, a rest timer, warm-up and plate calculators, 1RM and volume graphs, a body measurements tracker and CSV export. The Apple Watch app logs workouts with or without the iPhone nearby.

The free version saves unlimited workouts but only 3 custom routines. Strong Pro removes that limit.

Best for: people running one simple barbell program who don't want a feed or extras, and who like being able to export their data.

Fitbod

Fitbod works the other way round. Instead of you writing the plan, the app builds each session from your equipment, training history and recovery, and you log what you do inside it. It has over 1,000 exercises with videos, and the listing says it learns from the changes you make to its suggestions. It needs a monthly or yearly subscription once the free trial ends.

Best for: people who don't want to plan and are happy to let an algorithm choose the exercises each day. Less useful if you want to run the same fixed program for months.

JEFIT

JEFIT tries to cover everything. Its library has more than 1,400 exercises, and besides logging your own workouts you can download built-in programs or follow its AI "Adaptive Plan", which the listing says adapts every week and suggests the weight and reps for your next session. Its stats go deep: weekly sets per muscle, movement balance, a muscle map, a recovery chart, and body weight, body fat and measurements. Some features need the paid Elite membership.

Best for: lifters who want programs, next-session suggestions and detailed stats in the same app.

StrengthLog

StrengthLog is made by a Swedish company that also runs a large strength training site. Its free version is generous: unlimited workouts, no ads, a library of 500+ exercises, a rest timer, a plate calculator, records, goals and a set of free programs. Premium adds the full program catalog, advanced statistics, and RPE and reps in reserve logging with estimated 1RM.

Best for: people who want a free, ad-free log with solid programs, and who may pay later for effort logging and deeper stats.

Boostcamp

Boostcamp began by putting popular Reddit programs into an app. Today it has a large library of community programs plus more than 130 plans from coaches such as Eric Helms, Greg Nuckols and Cody Lefever (GZCL), and the library is free. You log RPE, reps in reserve and estimated 1RM, auto-progression sets your next weights, and an AI coach builds a multi-week plan from a short questionnaire. Its FAQ says there is no Apple Watch or Wear OS app.

Best for: lifters who want to run a named program like 5/3/1, GZCLP or PHUL without copying it into a spreadsheet.

RepZet

RepZet starts from your body instead of a program library. You take a quick test and a body scan, and it builds a 100% personalized routine around your weak points. You get a rank for each muscle, and every day it shows you today's workout. To log, you type the set the way you'd text it to a friend, for example "bench 60 kg 3x10", instead of filling in fields. It shows what you did last session and suggests what to beat next, so progressive overload doesn't depend on you remembering the numbers. There's also a chat where you can ask about technique or what to do today.

Full disclosure: I'm the developer of RepZet, and this blog is mine as well, so weigh this section with that in mind. What counts against it: it's iPhone only, with no Android, Apple Watch or web version. If you want to run a named program like 5/3/1, Boostcamp or StrengthLog suit you better.

Best for: iPhone users who don't know which muscles to prioritize and want the plan and the log in one place.

A notebook or a spreadsheet

Paper still works. It costs nothing, has no subscription or battery, and you can write whatever you like. The cost is the math: to find last week's numbers you flip back through pages, and you work out estimated maxes and weekly sets yourself. A spreadsheet solves part of that if you're willing to build the formulas.

Best for: people who enjoy writing things down and only track a handful of lifts.

What to log, whatever you use

The tool matters less than writing down the same things every session. For each exercise:

• The weight.
• The number of sets.
• The reps in each set.
• How hard it was, as RPE or reps in reserve (RIR). On the RIR-based scale, RPE 10 means you had no reps left, RPE 9 means one more was possible and RPE 8 means two (Helms et al., 2016).

Effort is the number people skip, and it's the one that tells you whether last week's 8 reps were easy or a grind. Here is what two sessions might look like (the numbers are an example):

Those numbers are what progression runs on. The ACSM suggests adding 2–10% to the load once you can do one or two reps more than your target on two sessions in a row (ACSM, 2009). Double progression turns that into a simple rule, and what is progressive overload covers the other ways to progress.

With a log like the one above you can estimate your max with the one-rep max calculator, set the next session's target with the progressive overload calculator and check your volume per muscle with the weekly sets calculator.

How to choose

1. Do you already have a program? If you do, you mainly need a quick log: Hevy, Strong or StrengthLog. If you want to pick one from a library, Boostcamp or StrengthLog. If you don't want to plan at all, Fitbod, JEFIT or RepZet.
2. Which phone and watch do you use? Android rules out RepZet. Logging from an Apple Watch rules out Boostcamp and RepZet. Hevy's website lists both an Apple Watch and a Wear OS app; for the others, check the Play Store listing if you wear a Wear OS watch.
3. How much do you want to pay? Fitbod needs a subscription after the trial, and Strong's free version stops at 3 routines. StrengthLog and Boostcamp list unlimited logging and free programs.

Then use it for two weeks with the same lifts. If you stop logging after a few sessions, the app doesn't suit you, however good its feature list looks.

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