Comparison

Flex vs The Plus Set

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

Head to head
About

Flex

Features
Read full description

Flex: Stretching Routines for a Healthier You Flex is your go-to app for building flexibility, improving mobility, and relieving tension through guided stretching routines. Whether you’re waking up, cooling down after a workout, or just need a moment to relax, Flex offers personalized routines tailored to your body and goals. Why Flex? Diverse Stretching Routines: Choose from a wide range of stretches like Arm Circles, Kneeling Cat Stretch, Standing Neck Flexor Stretch, and more. Track Your Progress: Stay motivated with streak tracking, longest streak stats, and daily completion goals. Personalized Recommendations: Get routine suggestions based on your preferences and fitness level. Customizable Settings: Adjust voiceovers, sound effects, and timers to make every session your own. Set Reminders: Never miss a stretch session with easy-to-set reminders. Easy to Use: Enroll in routines, start stretching, and edit preferences with a user-friendly interface. Stretches for Every Need From dynamic warm-ups to deep relaxation, Flex has stretches to suit every moment of your day. Whether you want to target specific areas like your neck, shoulders, or hips or enjoy a full-body session, Flex has you covered. Start your journey to better flexibility, improved posture, and a more relaxed mind and body. Download Flex now and feel the difference! For terms of use and privacy policy, visit: https://betterfutures.studio/flex/terms-of-use

About

The Plus Set

This app simplifies tracking your Wendler 5/3/1 workouts, including Boring But Big assistance. It automatically calculates weights, tracks progress, and features a built-in rest timer. Focus on your training with smart progression and flexible customization.

Highlights
  • Automatic weight calculation
  • Plate loading guidance
  • Warmup and working set tracking
  • AMRAP set prompts
  • Estimated 1RM calculation
  • Built-in rest timer
  • Calendar workout history
Features
Read full description

The Plus Set is a clean, focused app for tracking Wendler 5/3/1 workouts with Boring But Big (BBB) assistance work. SIMPLE WORKOUT TRACKING • Automatically calculates weights for each set based on your training maxes • Shows exact plate loading for every weight (no more mental math) • Tracks warmup sets, working sets, and BBB assistance work • Tap to log reps, with special prompts for AMRAP sets SMART PROGRESSION • Calculates estimated 1RM from your AMRAP performance using the Epley formula • Automatically suggests new training maxes after each cycle • Training maxes only go up, never down BUILT-IN REST TIMER • Automatic rest timer starts after each set • Configurable durations for warmup, working sets, and BBB • Choose from 8 different chime sounds • Access timer anytime from the dedicated Timer tab TRACK YOUR PROGRESS • Calendar view shows workout history at a glance • Personal records tracked automatically • PR celebrations when you hit new bests • Export your full workout history for backup or analysis FLEXIBLE TRAINING • Choose which exercise to start each session • Change exercises mid-workout if needed • Customize exercise order to match your schedule • Adjustable training max percentage (80-100%) SYNCS ACROSS DEVICES • iCloud sync keeps your data backed up • Access your workout history on all your devices NO SUBSCRIPTIONS • One-time purchase, no recurring fees • No ads, no tracking, no accounts required Whether you're new to 5/3/1 or a seasoned lifter, The Plus Set helps you focus on what matters: putting in the work and getting stronger.

Screenshots

Flex4 screens
The Plus Set4 screens

Verdict

The call

The clearest difference is in-app purchases: The Plus Set at none against Flex's 2. The Plus Set also leads on update cadence (every 2 weeks vs every 3 months). Flex's advantage is iOS requirement (13.4 vs 17.0). On price, 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. Flex sells 2 in-app purchases, starting at $13.99 per month. The Plus Set asks for nothing beyond the download.

UpkeepUpdate frequency

Flex ships an update every 3 months, The Plus Set every 2 weeks. The most recent releases landed on September 29, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 6 level
Flex versus The Plus Set: the parameters behind the verdict, then further details
ParameterFlexThe Plus Set
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS13.4 — better17.0
Further details — not scored
Size70 MB2 MB
Age rating17+17+
DeveloperCAPNKLUTCHVishal Agrawal

In-app purchases

2 purchases

Flex

Subscriptions2
  • Premium Monthly$13.991 Month
  • Premium Annual$39.991 Year
None

The Plus Set

No in-app purchases

Questions

Is Flex free?
Flex is free to download, with in-app purchases available.
Is The Plus Set free?
The Plus Set is free to download, with no in-app purchases.
Do Flex or The Plus Set have ads?
Neither Flex nor The Plus Set shows ads.
Which is updated more often, Flex or The Plus Set?
Flex ships an update every 3 months, and The Plus Set every 2 weeks. Most recently, Flex was updated on September 29, 2026 and The Plus Set on October 5, 2026.

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