Comparison

Five/Three/One vs Fortis

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Five/Three/One

This app helps weightlifters follow Jim Wendler's 5/3/1 program by automating cycle calculations, plate suggestions, and progress tracking. It eliminates the need for paper logs or spreadsheets, focusing on strength gains. Features include rest timers, workout scheduling, and Apple Health integration.

Highlights
  • 5/3/1 cycle planning and scheduling
  • Progress charting
  • Rest timer with notifications
  • Automatic plate calculation
  • Next cycle calculation based on performance
  • Home screen widget
  • Apple Health integration
Features
Read full description

The latest app for weightlifters doing Jim Wendler's 5/3/1 program! Five/Three/One is a focused and intuitive app helping you achieve what really matters: Getting Stronger. No more bringing a crumbled workout sheet to the gym, no more messing around spreadsheets to update your weights. From calculating your cycles, to telling you what plates to put on the bar, Five/Three/One does it all. Features include: - Planning and scheduling your whole 5/3/1 cycle - Charting your progress - Rest timer with notifications - Automatic plating calculation - Calculating your next cycle based on your performance - Notes associated with each sets - Home screen widget showing your your current and upcoming workouts - Lbs/kg support Optional paid features: - Customize which plates you're using and change your barbell's weight - Customize templates assistance work and define your own exercises - Beyond 5/3/1 templates and options, from Joker Sets to FSL, Pyramid and much more! Integrates with Apple Health : The app saves the workouts you've performed as well as the calories you've burnt in Apple Health. As weightlifters doing 5/3/1 ourselves, we made the app we wanted after being dissatisfied with what was out there. More than just a glorified spreadsheet, we designed it to be focused on each task at hand. With even more great features in the pipeline, we're stoked to release the app for others to use and can't wait to hear your feedback! We use it, we love it, and we're sure you will too.

About

Fortis

This app helps users log detailed workout information, monitor strength progression, and share training sessions with friends. It fosters a community where users can learn from each other's training styles and gain inspiration without paid coaching.

Highlights
  • Log exercises, sets, reps, and weight
  • Monitor strength progression trends
  • Share workouts with friends
  • Discover new training methods
  • Supports various training styles
  • Open and social training platform
Read full description

Fortis – Workout Tracker, Training Log & Adaptive Coach Fortis is the workout tracker and training log built for lifters of every background, powerlifters, bodybuilders, weightlifters, athletes, or anyone working to get stronger in the gym. Log every set, track your strength progression over time, and train alongside a real community instead of alone. Most fitness apps make you choose: a flexible logbook with no guidance, or a rigid plan that doesn't adapt to your life. Fortis does both: a free, open training log built on your community, plus an adaptive coach that reads your progress and adjusts your program in real time. Key Features Log every detail with precision – Track exercises, sets, reps, and weight across every lift, every session. Monitor strength progression – See your e1RM trend and performance history for every lift, automatically. Seamless workout sharing – Post full workout details so your training partners see exactly how you train. Get coached, not just tracked – Fortis Premium catches plateaus before you do and adjusts your program to keep you progressing. Train your way – Powerlifting, bodybuilding, Olympic lifting, or general strength training, Fortis adapts to your program. Stay consistent when life gets busy – Premium's flexibility layer moves your training days around your schedule without losing progress. Train Smarter, Together Strength training doesn't have to be a guessing game or a rigid script. With Fortis, you build your training log alongside a real community and get an adaptive coach that steps in the moment your progress stalls, so you stay consistent, keep progressing, and don't burn out. Whether you're chasing a new squat PR, refining your technique, or just staying consistent in the gym, Fortis gives you the tools to track, train, and grow, with a community behind you and a coach in your corner. Download Fortis today and start training with a plan that adapts to you.

Screenshots

Five/Three/One4 screens
Fortis4 screens

Verdict

The call

The clearest difference is in-app purchases: Fortis at none against Five/Three/One's 6. Fortis also leads on review sentiment (100% vs 78%). Five/Three/One's advantage is ratings volume (1.5K vs 26) and update cadence (every 2 weeks vs monthly). On price, rating, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Five/Three/One sells 6 one-off in-app purchases. Fortis asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Five/Three/One against 4.8 for Fortis. That said, the two scores are not equally well evidenced: Five/Three/One has 1.5K ratings behind it against 26, so its average is the more settled of the two. Written reviews are what separate them: 78% of Five/Three/One's written reviews are positive against 100% of Fortis's.

UpkeepUpdate frequency

Five/Three/One ships an update every 2 weeks, Fortis monthly. The most recent releases landed on October 27, 2026 and October 20, 2026 respectively.

Scorecard6 real differences · 4 level
Five/Three/One versus Fortis: the parameters behind the verdict, then further details
ParameterFive/Three/OneFortis
PriceFreeFree
Rating4.8 (1.5K ratings) — better4.8 (26 ratings)
Positive reviews78.2% of reviews100.0% of reviews — better
Number of ratings1.5K — better26
Update frequencyEvery 2 weeks — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size37 MB46 MB
Age rating4+4+
DeveloperStrong Pigeon LLCFortis Workout LLC

Customer experience

Five/Three/One

All ratings1,218 ratings
Positive97.5%
Neutral2.0%
Negative0.6%
Written reviews133 reviews
Positive78.2%
Neutral9.0%
Negative12.8%

Fortis

All ratings26 ratings
Positive96.2%
Neutral0.0%
Negative3.8%
Written reviews19 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

User reviews

Five/Three/One

From 1.5K App Store ratings

What we love

  • 💻 Excellent app for 5/3/1 programming
  • 📊 Provides great tracking and progress monitoring
  • 🔢 Automatic weight and plate calculations
  • ⏱️ Built-in rest timers and workout flow
  • 🎨 Clean and intuitive user interface

Room to improve

  • 🗓️ Rigid scheduling and inability to reschedule missed workouts
  • 🔒 Limited customization options for assistance exercises
  • 🔀 Difficulty in reordering or supersetting exercises
  • 🐛 Occasional bugs and data loss issues
  • ⚠️ Lack of Apple Watch integration

Fortis

From 26 App Store ratings

What we love

  • 👍 Easy to use and track workouts
  • 🔗 Great social/community features
  • 📊 Helpful for tracking progress over time
  • 🤝 Connects friends and motivates users
  • 🎨 Sleek and user-friendly interface

Room to improve

  • 🐛 Minor bugs with bio feature
  • 💡 Requests for more customization options

Bugs and requests

Five/Three/One

Reported bugs

4 issues
  • Workout data occasionally lost or not syncing properly
  • Calendar and scheduling issues when trying to reschedule missed workouts
  • Plate calculation bugs leading to incorrect weight displays
  • Occasional app freezes and crashes

Requested features

5 requests
  • Allow more flexibility in scheduling and rescheduling workouts
  • Provide customization options for assistance exercises
  • Implement superset and out-of-order exercise completion
  • Add support for Apple Watch integration
  • Incorporate additional 5/3/1 program variations (e.g., Bodybuilder, Monolith)

Fortis

Reported bugs

1 issue
  • Bio feature reverts to capital letters when using space bar

Requested features

2 requests
  • Community feed to share tips and motivation
  • More workout categories (sports, home workouts, etc.)

In-app purchases

6 purchases

Five/Three/One

One-time6
  • Custom Weight Plates$2.99
  • Tip$4.99
  • Beyond 5/3/1 Pack$5.99
Show 3 more
  • Custom Assistance$8.99
  • Large Tip$9.99
  • Enormous Tip$24.99
None

Fortis

No in-app purchases

Questions

Is Five/Three/One free?
Five/Three/One is free to download, with in-app purchases available.
Is Fortis free?
Fortis is free to download, with no in-app purchases.
Which has better reviews, Five/Three/One or Fortis?
Five/Three/One is rated higher. Five/Three/One averages 4.8 out of 5 from 1.5K ratings, while Fortis averages 4.8 from 26 ratings.
Do Five/Three/One or Fortis have ads?
Neither Five/Three/One nor Fortis shows ads.
Which is updated more often, Five/Three/One or Fortis?
Five/Three/One ships an update every 2 weeks, and Fortis monthly. Most recently, Five/Three/One was updated on October 27, 2026 and Fortis on October 20, 2026.

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