Comparison

btwb vs Nucleo Gym

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

Nucleo Gym

Features
Read full description

Nucleo es tu identidad deportiva portátil. Un mismo perfil de atleta para todos los gimnasios y boxes de CrossFit donde entrenas: tu historial, tus récords y tu comunidad te siguen a donde vayas. CON NUCLEO PUEDES: • Reservar clases y gestionar tu lista de espera. • Hacer check-in con el código QR de tu clase. • Registrar y seguir la evolución de tus PRs (récords personales). • Ver el WOD del día y tu posición en el board. • Acumular puntos, rachas y logros de tu comunidad. • Comprar pases drop-in para entrenar en otros boxes. • Pagar tu membresía, personal training y productos de la tienda de tu gimnasio. • Seguir el feed de anuncios y la comunidad de tu box. Tu progreso es tuyo: cambies de gimnasio cuando cambies, tu historial deportivo permanece contigo.

Screenshots

btwb4 screens
Nucleo Gym4 screens

Verdict

The call

btwb and Nucleo Gym are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

btwb ships an update weekly, Nucleo Gym every 5 days. The most recent releases landed on November 6, 2026 and October 28, 2026 respectively.

ScorecardNo meaningful differences
btwb versus Nucleo Gym: the parameters behind the verdict, then further details
ParameterbtwbNucleo Gym
PriceFreeFree
Rating4.6 (1.5K ratings) — better—
Positive reviews53.2% of reviews—
Number of ratings1.5K — better—
Update frequencyWeeklyEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchases—
DevicesiPhone, iPod, Apple Watch — betteriPhone, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size265 MB61 MB
Age rating4+4+
DeveloperBTWB, LLCJuan Luis Garcia

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

Nucleo Gym

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

btwb

No in-app purchases

None

Nucleo Gym

No in-app purchases

Questions

Is btwb free?
btwb is free to download, with no in-app purchases.
Is Nucleo Gym free?
Nucleo Gym is free to download, with no in-app purchases.
Do btwb or Nucleo Gym have ads?
Neither btwb nor Nucleo Gym shows ads.
Which is updated more often, btwb or Nucleo Gym?
btwb ships an update weekly, and Nucleo Gym every 5 days. Most recently, btwb was updated on November 6, 2026 and Nucleo Gym on October 28, 2026.

Other comparisons