Best Strength Training Apps for iPhone (2026)

Best Strength Training Apps in 2026

The best strength training app for iPhone in 2026 is PR Streak, because it starts you on a proven program and tracks every set toward progressive overload. Most lifters starting a strength program face the same problem. You know you should add weight over time, but a notebook makes it hard to see last week's numbers, and a generic fitness app buries barbell work under cardio and classes. We compared the top strength-focused apps on programs, progress tracking and pricing. For the wider field of trackers, our best workout tracker apps guide covers general logging too.

Best Strength Training Apps at a Glance (2026)

The best strength training apps in 2026 are:

PR Streak - best for starting a proven program and tracking every PR
Hevy - best for a clean, well-loved logger
Strong - best for a minimalist, no-frills log
StrongLifts 5x5 - best for a guided beginner barbell program
Boostcamp - best for free, structured coach-built programs
JEFIT - best for AI-guided progressive overload on a budget

1. PR Streak - Best Overall Strength Training App

PR Streak is a workout tracker and gym log for iPhone built around getting stronger over time. Answer a few questions and the AI coach builds a starting plan around your goal and your gear. You can start Push Pull Legs, 5x5 Strength, Upper/Lower or Full Body 3-Day in one tap, and every set you log feeds straight into your progress charts.

Why PR Streak Stands Out

Strength training is a numbers game. You need to know what you lifted last time, whether you hit a personal record, and when it is time to add weight.

PR Streak shows what you lifted last time right next to every set, so adding a rep or five pounds takes one glance, not a search through old notes. Every PR is caught automatically, including your estimated one-rep max.

Key Features

6 starter programs: Start Push Pull Legs, 5x5 Strength, Upper/Lower, Full Body 3-Day, Dumbbell Only or Bodyweight Basics in one tap, built around proven set and rep ranges.
Automatic PR tracking: Heaviest weight, most reps, best set volume and estimated 1RM are all caught the moment you log a set. Our 1RM calculator uses the same Epley and Brzycki blend.
Voice logging between sets: Say your set out loud, like "three sets of five at two twenty five," and PR Streak logs it, so your rest between sets stays a rest.
An auto rest timer: Your rest timer starts on its own when you finish a set, with a countdown on your Lock Screen and in the Dynamic Island.
An AI coach for your next set: Get a next-set suggestion with a short reason why, plus a short note after each workout on how it went.
873 exercises with photos: Every barbell, dumbbell and machine lift comes with photos and step-by-step instructions, and you can add your own lifts too.

Pricing

Free trial available: One plan unlocks every feature.
Your data is yours: Export everything anytime as CSV or JSON, and bring your history from Strong or Hevy.

Best For

Lifters starting a structured strength program like Push Pull Legs or 5x5 Strength
Anyone who wants every PR and estimated 1RM tracked without doing the math
Lifters who want a next-set suggestion with a reason, not just a number
Switchers who want their training history to move with them

PR Streak - the workout tracker that coaches you.

✓An AI coach that builds your plan around your gear & goals.
✓Hands-free voice logging, plus progress, est. 1RM & PRs.
✓Built so you never lose a workout. Switch from Strong or Hevy in minutes.

Coming Soon to iPhone

2. Hevy - Best for a Clean, Well-Loved Logger

Hevy is the workout log most lifters recommend first, rated 4.9 from about 94,000 App Store ratings as of September 2026. It logs a strength session fast and looks great doing it.

Key Features

Clean set-by-set logging with a large exercise library
Hevy Trainer, which builds and progresses a training plan
Progress charts and personal record tracking
Available on iPhone, Android, web and Apple Watch

Pricing

Hevy's free plan includes 4 routines, 7 custom exercises and 3 months of stats. Hevy Pro costs $2.99 a month or $23.99 a year, as of September 2026.

Best For

Lifters who want a large, active community and a generous free tier, with routine folders to organize their programs.

Good to Know

Hevy stores your last 3 months of stats on the free plan, and the wider version history sits behind Pro.

3. Strong - Best for a Minimalist, No-Frills Log

Strong is a minimalist strength tracker built for lifters who want to log a set and get back under the bar.

Key Features

Fast, no-frills set logging built around barbell and dumbbell lifts
A rebuilt Apple Watch app for logging straight from your wrist
Personal record and one-rep max tracking
Custom routines with rest timers

Pricing

Strong's free tier includes 3 custom routines. Strong PRO costs $4.99 a month or $29.99 a year, as of September 2026.

Best For

Lifters who train mostly from the gym floor and want a stripped-back, minimalist screen.

Good to Know

Strong's free tier caps you at 3 saved routines before PRO is needed.

4. StrongLifts 5x5 - Best for a Guided Beginner Barbell Program

StrongLifts 5x5 wraps the classic 5x5 strength program into a guided app, telling beginners exactly what weight to load each session.

Key Features

A single, guided 5x5 progression for 5 core barbell lifts
Automatic weight increases built into the program
A built-in plate calculator and rest timer
Simple video demonstrations for each lift

Pricing

StrongLifts 5x5 is free to download but requires a subscription to use: $11.99 a month or $59.99 a year, as of September 2026, with a free 7-day trial on the annual plan.

Best For

Beginners who want one proven barbell program and no decisions to make about sets or weight.

Good to Know

StrongLifts 5x5 is built around one program, so it suits a first strength cycle more than years of varied training.

5. Boostcamp - Best for Free, Structured Coach-Built Programs

Boostcamp gives lifters access to more than 11,000 free programs from real strength coaches, from powerlifting cycles to bodybuilding splits.

Key Features

Over 11,000 free coach-built programs to follow
Full set and rep logging with progress charts
Plate calculator and rest timer built in
Program browser sorted by goal and experience level

Pricing

Programs and tracking are free. Boostcamp Pro costs $14.99 a month or $59.99 a year, as of September 2026, with a free 7-day trial on the yearly plan.

Best For

Lifters who want thousands of free coach-built strength programs to choose from.

Good to Know

Boostcamp's library spans many coaches, so program quality and style vary from one to the next.

6. JEFIT - Best for AI-Guided Progressive Overload on a Budget

JEFIT pairs a deep exercise database with AI-driven progressive overload suggestions, aimed at lifters who want data-backed guidance without a high price tag.

Key Features

AI-driven progressive overload suggestions
One of the deepest exercise libraries of any tracker
Community-built routines and programs
Progress charts and personal record tracking

Pricing

JEFIT is free with ads. JEFIT Elite costs $12.99 a month or $69.99 a year, as of September 2026, and removes ads.

Best For

Budget-focused lifters who want AI progression suggestions and a huge exercise library.

Good to Know

JEFIT's free tier carries ads, and its interface leans toward function over polish.

How to Choose the Best Strength Training App

Pick based on how much structure you want and how you like to log a set.

Program style: Decide if you want a single guided program like StrongLifts 5x5, a library of free programs like Boostcamp, or a starting plan you can keep and adjust, like PR Streak's AI-built plan.
Progress tracking: Look for automatic PR and estimated 1RM tracking, so you know when to add weight without checking strength standards by hand. Our muscle-building statistics roundup covers why consistent logging habits matter most.
Logging speed: If typing between sets slows you down, look for voice logging or a fast Apple Watch app.
Data ownership: Confirm you can export your history as CSV or JSON, so years of strength numbers never get stuck in one app.
Price: Compare each app's current price on its App Store page.

Frequently Asked Questions

What is the best strength training app?

PR Streak is the best strength training app for iPhone in 2026 because it starts you on a proven program like Push Pull Legs or 5x5 Strength and tracks every PR and estimated 1RM automatically. It also offers hands-free voice logging and an AI coach that suggests your next set with a short reason. Hevy is a strong pick if you want a clean, well-loved free logger, and StrongLifts 5x5 suits beginners who want one guided barbell program with no decisions to make.

Which app is best for progressive overload?

PR Streak and JEFIT both track progressive overload well, but in different ways. PR Streak catches every personal record and estimated 1RM automatically the moment you log a set, and its AI coach suggests your next set with a short reason why. JEFIT uses AI-driven suggestions across a very large exercise library. Either app removes the manual math of tracking progressive overload, so pick based on whether you want a coach with a starting plan or a huge library to browse.

Can I follow a strength program without a personal trainer?

Yes. Several apps ship proven strength programs built by coaches, so you never have to design your own split. PR Streak includes 6 starter programs, including Push Pull Legs and 5x5 Strength, that you can start in one tap and adjust as you go. StrongLifts 5x5 and Boostcamp also offer guided or free coach-built programs. Each of these removes the guesswork of picking exercises, sets and reps on your own.

Do I need to log every set to get stronger?

Consistent logging makes progressive overload far easier to manage, even if it is not strictly required. Writing down your sets means you always know what you lifted last time, so you can aim to beat it. Without a log, most lifters underestimate or forget their previous numbers, which stalls progress. Apps like PR Streak show your last set right next to the one you are about to do, which removes the guesswork entirely.

How much does a strength training app cost?

Most strength training apps offer a free tier with a paid plan for extra features. PR Streak offers a free trial with one plan that unlocks everything. Hevy's free plan includes 4 routines before Pro adds more, and JEFIT is free with ads until you upgrade to Elite. Compare each app's current price on its App Store page before you decide, since pricing tiers change over time.

Which Strength Training App Should You Pick?

PR Streak is the best strength training app for iPhone in 2026 if you want a proven starting program, automatic PR tracking and a coach that explains its next-set ideas. It pairs Push Pull Legs, 5x5 Strength and four other starter programs with hands-free voice logging.

If you want a single, guided barbell program with no decisions to make, StrongLifts 5x5 is a great fit. If you want thousands of free coach-built programs to browse instead, Boostcamp is a strong choice too. Get PR Streak on the App Store and start your first strength session in minutes.