The best 5/3/1 workout app in 2026 (free + paid)

I built FitForge because I needed a tracker that didn't make me figure everything out myself. If you're running 5/3/1, here's an honest look at the apps that actually do the program well — and where FitForge fits.

Quick answer

If you want a dedicated 5/3/1 app that auto-calculates your working weights, Boostcamp and the dedicated 5/3/1 apps (KeyLifts, Five/Three/One, Wendler Log) are the strongest options. If you want a workout + nutrition system that runs 5/3/1 + rotates your macros by training day, FitForge is the one to look at.

What most people running 5/3/1 actually need

When I started 5/3/1, the thing that tripped me up wasn't the program — it's calculating my training max every cycle, picking the right assistance work, and remembering which day I'm on. I wanted the app to handle that so I could just show up and lift.

Here's the truth: most apps that "support" 5/3/1 just let you log a custom routine where you manually set the weights every session. Real 5/3/1 apps calculate your working weights from your training max, auto-progress, and know the difference between BBB, FSL, and Joker Sets.

The real options (2026)

1. Boostcamp — best program library

Boostcamp has 11,000+ programs including Wendler-affiliated 5/3/1 templates. The app auto-calculates your working weights from your training max, tracks progression, and lets you swap assistance work. Free for most programs, Pro is around $60/yr for advanced analytics.

Where it wins: the program library is huge. Auto-calculations are accurate. The mobile app is polished.

Where it doesn't: no nutrition tracking. If you want your macros to match your training day (high carb on heavy lift days, lower on rest days), Boostcamp doesn't do that.

2. KeyLifts — best dedicated 5/3/1 app

KeyLifts is purpose-built for 5/3/1. It natively supports BBB, FSL, Joker Sets, 5s PRO, and 7th-week deloads. Auto-calculates training max and cycle increases. Has a plate calculator and rest timer. iOS and Android.

Where it wins: the most 5/3/1-specific app on the market. Every variation supported. Clean interface.

Where it doesn't: still mobile-only. No nutrition, no meal planning, no streak system.

3. Five/Three/One — best iOS experience

Minimalist iOS app designed around 5/3/1. Auto-progresses your training max on cycle completion. Clean, distraction-free. Apple Health integration.

4. FitForge — best for workout + nutrition in one app

FitForge is what I built because the existing options didn't fit what I wanted. It has a built-in 7-day program with a 5/3/1 template (beginner / intermediate / advanced), plus the meal plan that rotates macros by training day. The 7-day meal plan knows when you're lifting heavy vs resting.

Where FitForge wins:

• Meal plan that rotates macros by training day (the thing no other 5/3/1 app does)
• Web app — works in any browser, no install required
• Watch view for Apple Watch and Wear OS (browser-based, no native app)
• Free forever with the full program + meal plan
• Streak system that doesn't use freeze days (consistency is the point)

Where FitForge doesn't (yet):

• The program library is small (1 built-in program vs Boostcamp's 11,000+)
• No auto-calculated 5/3/1 percentages yet — you set the working weights manually
• No RPE/RIR tracking yet
• Smaller exercise library than dedicated trackers

If you want a polished 5/3/1-specific app with auto-calculations, FitForge isn't there yet. If you want workout + meal plan in one app, with a 5/3/1 template, FitForge is worth trying.

5. Wendler Log 5/3/1 / 531 Workout Tracker

Solid dedicated 5/3/1 trackers on both iOS and Android. They log AMRAP sets, calculate estimated 1RMs, show plate loadouts, and manage multi-week mesocycles. Best value if you want dedicated 5/3/1 without the premium tier.

How to pick the right one

What I'd do if I were starting 5/3/1 today

Honest answer: I'd probably use Boostcamp for the first 3 months because the program library is huge and the auto-calculations are accurate. The free tier covers 5/3/1 with all the variations. I'd use a separate app (MyFitnessPal or a spreadsheet) to track macros because Boostcamp doesn't do nutrition.

If I got tired of bouncing between two apps, I'd try FitForge — one app for the workout + meal plan, with a 5/3/1 template. The macro rotation by training day is the thing no other 5/3/1 app does. It's not as deep on 5/3/1-specific features as Boostcamp or KeyLifts, but the consolidation is real.

FAQ

Is FitForge good for 5/3/1?

Yes, with caveats. The 7-day program includes a 5/3/1 template (beginner/intermediate/advanced). The meal plan rotates macros by training day. But FitForge doesn't auto-calculate your 5/3/1 working weights yet — you set them manually based on your training max. If auto-calc is critical, Boostcamp or KeyLifts is a better fit.

Which 5/3/1 app is completely free?

Boostcamp's free tier includes most major 5/3/1 templates. Wendler Log 5/3/1 and 531 Workout Tracker are completely free on both iOS and Android. FitForge is free forever for the full program + meal plan.

Do any 5/3/1 apps include nutrition tracking?

FitForge is the only one I've found that combines 5/3/1 with a 7-day meal plan that rotates macros by training day. The other options (Boostcamp, KeyLifts, Five/Three/One, Wendler Log) are workout-only.

What about Liftosaur?

Liftosaur is powerlifting-focused with a scriptable engine. You can build or load 5/3/1 programs with custom progression rules (e.g., "if I hit 3x5 @ RPE 8, add 5 lbs next week"). It's more flexible than FitForge but steeper to learn. Free tier is generous.

Last updated: August 13, 2026. I built FitForge, so I'm biased. Tried to be fair about where other apps do things better.