Comparison

btwb vs GymNext Flex Timer

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

Head to head
About

btwb

Log your workouts, discover new ones, and connect with your fitness community. Track progress, analyze performance, and manage nutrition with a comprehensive fitness tracking tool.

Highlights
  • Daily workout programming
  • Discover millions of WODs
  • Track workout results
  • Macro and nutrition tracking
  • Community and social features
  • Performance analysis and badges
  • Gym virtual programming
Features
Read full description

btwb, the world's premier workout tracker, brings fitness communities together, in person & remotely. We are the world's largest workout Log with 100+ million results and counting. WORKOUTS - Get daily programming at your fingertips with btwb's Varied Not Random workouts. 4 versions available daily: Performance, Fitness, Dumbbell Only, and No Equipment. - Post results for every workout and/or create your own. - Discover the perfect workout among 12+ Million Unique WODs. - Perfectly capture and share your workout experience with attached images and location tagging. - See how you stack up against the world with World-Wide Leaderboards. GYMS - Keep your community connected by taking your gym virtual. Deliver custom programming to groups and individuals, include personalized movement demos and WOD briefs, view member activity and results via gym feeds and leaderboards, and encourage members with emojis & comments through private Squads. MACROS - Track your Macros. Get the best features of other macro tracking apps combined with our best-in-class workout tracking. With over 700k grocery items, 160k restaurant items, and 13k common foods, find exactly the food you’re looking for by searching our library or by scanning the barcode of your favorite packaged item! You can even create your own custom entries! Set your own macronutrient targets, or have coaches set them for you. - Set your own macronutrient targets, or have coaches set them for you. SOCIAL - Create private Squads and build Follow lists to keep up with your friends' results. - Use direct messaging to converse about fitness with individuals and groups. ANALYSIS - Earn badges for various workouts, gymnastics maxes, 1RM lifts, and running & rowing intervals. - Discover potential major and minor strength, mobility, and technique issues in specific categories with Imbalances. - How fit are you? (1-100) Work to unlock your Fitness Level. Track body fat, benchmarks and more!

About

GymNext Flex Timer

This app offers advanced interval training timing with customizable modes and the ability to control an external LED display. It integrates with wearables and heart rate monitors for a comprehensive workout experience.

Highlights
  • Control external LED displays
  • Multiple customizable timer modes (Tabata, EMOM, etc.)
  • Save and recall favorite workouts
  • Apple Watch control
  • Audio sync with music
  • Heart rate monitor integration
  • Control multiple LED displays
Features
Read full description

Meet the future of interval training. GymNext Flex Timer is the only timer app that combines powerful workout programming with control of large, wall-mounted LED displays—giving you the best of both worlds. Traditional gym timers rely on clunky remotes and are difficult to use. Mobile apps are flexible, but hard to see across the room. Flex Timer solves both. Build and control your workouts from your phone while displaying them on bright, easy-to-read LED screens anywhere in your gym. Perfect for HIIT, CrossFit, circuits, bootcamps, boxing, MMA, strength training, and more. Features: • Use the app on its own or connect to GymNext LED displays for maximum visibility • Core timer modes include Count Up/Down, Round, Tabata, EMOM, Mixed Intervals, and Sets with Rest • Plan your personal workouts or full classes in advance—everything ready in one tap • Share timers with athletes and trainers instantly using simple links • Save workouts to your library for quick access • Control your timer from Apple Watch—completely hands-free • Smart audio sync keeps your music and timer cues perfectly aligned • Connect multiple Bluetooth heart rate monitors and track performance in real time • Set custom heart rate zones for better training feedback • Control multiple timers across your gym at the same time • Run different workouts simultaneously for group training • Reliable Bluetooth control with no line-of-sight limitations “This will eventually become the standard for all gyms” – Garage Gym Reviews “All our coaches love the clock” – CrossFit Barrie “We love it to death” – Wolverine Strength & Conditioning Download Flex Timer and upgrade the way you train. We’re always improving. Have feedback? Reach us at support@gymnext.com

Screenshots

btwb4 screens
GymNext Flex Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: btwb at none against GymNext Flex Timer's 2. btwb also leads on update cadence (weekly vs every 3 weeks). GymNext Flex Timer's advantage is review sentiment (72% vs 53%) and rating (4.8 vs 4.6). On price, ratings volume, 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. GymNext Flex Timer sells 2 in-app purchases, starting at $8.99 per month. btwb asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

GymNext Flex Timer holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 1.5K and 2.1K respectively. Written reviews point the same way: 53% of btwb's written reviews are positive against 72% of GymNext Flex Timer's.

UpkeepUpdate frequency

btwb ships an update weekly, GymNext Flex Timer every 3 weeks. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

Scorecard5 real differences · 5 level
btwb versus GymNext Flex Timer: the parameters behind the verdict, then further details
ParameterbtwbGymNext Flex Timer
PriceFreeFree
Rating4.6 (1.5K ratings)4.8 (2.1K ratings) — better
Positive reviews53.2% of reviews71.7% of reviews — better
Number of ratings1.5K2.1K — better
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod, Apple Watch — better
Requires iOS15.615.0 — better
Further details — not scored
Size265 MB185 MB
Age rating4+4+
DeveloperBTWB, LLCHomick Enterprises

Customer experience

btwb

All ratings1,529 ratings
Positive89.5%
Neutral2.7%
Negative7.8%
Written reviews203 reviews
Positive53.2%
Neutral9.4%
Negative37.4%

GymNext Flex Timer

All ratings2,119 ratings
Positive96.6%
Neutral1.1%
Negative2.4%
Written reviews173 reviews
Positive71.7%
Neutral6.4%
Negative22.0%

User reviews

btwb

From 1.5K App Store ratings

What we love

  • 🚀 Great app for tracking workouts
  • 👍 Comprehensive fitness tracking features
  • 🔥 Best CrossFit app on the market
  • 💪 Helps identify strengths and weaknesses
  • 🏆 Excellent for measuring progress over time

Room to improve

  • 🐛 Buggy and glitchy at times
  • 🤔 Confusing and not very user-friendly
  • 📱 Poor mobile app experience
  • 💰 Expensive subscription model
  • 🤯 Frustrating issues with logging workouts

GymNext Flex Timer

From 2.1K App Store ratings

What we love

  • 🚀 Versatile and customizable
  • 👍 User-friendly interface
  • 🔔 Reliable and consistent
  • 💪 Excellent for interval training
  • 🔊 Clear audio cues

Room to improve

  • 🐛 Audio cues sometimes stop working
  • 🔊 Lack of volume control
  • 🔍 Detailed instructions needed for beginners
  • ⏱️ Delayed countdown between phone and timer

Bugs and requests

btwb

Reported bugs

5 issues
  • Subscription cancellation and billing problems
  • Frequent crashes and white screens
  • Inability to log certain workout types
  • Barcode scanner and movement tracking issues
  • Problems with data syncing and history display

Requested features

5 requests
  • Add dark mode or black background option
  • Integrate with Apple Health and other fitness apps
  • Improve custom workout creation and logging
  • Provide better social/community features
  • Fix issues with loading and saving workout data

GymNext Flex Timer

Reported bugs

2 issues
  • Saved timers not consistently loading
  • Segmented timers not saving properly

Requested features

4 requests
  • Watch app integration for remote control
  • Background audio playback when app is closed
  • Customizable voice options
  • Lap timer functionality

In-app purchases

None

btwb

No in-app purchases

2 purchases

GymNext Flex Timer

Subscriptions2
  • Flex Timer Pro Monthly7 Days trial$8.991 Month
  • Flex Timer Pro Yearly1 Month trial$79.991 Year

Questions

Is btwb free?
btwb is free to download, with no in-app purchases.
Is GymNext Flex Timer free?
GymNext Flex Timer is free to download, with in-app purchases available.
Which has better reviews, btwb or GymNext Flex Timer?
GymNext Flex Timer is rated higher. btwb averages 4.6 out of 5 from 1.5K ratings, while GymNext Flex Timer averages 4.8 from 2.1K ratings.
Do btwb or GymNext Flex Timer have ads?
Neither btwb nor GymNext Flex Timer shows ads.
Which is updated more often, btwb or GymNext Flex Timer?
btwb ships an update weekly, and GymNext Flex Timer every 3 weeks. Most recently, btwb was updated on October 8, 2026 and GymNext Flex Timer on October 13, 2026.

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