Comparison

6 Pack Promise vs Built Different Athletes

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

Head to head
About

6 Pack Promise

Achieve your desired physique with elite ab workouts designed by a celebrity trainer. This app offers a variety of exercises, video demonstrations, and meal plans to help you build core strength and get a six-pack. It provides a free basic program with an option to unlock advanced workouts and meal plans through in-app purchases.

Highlights
  • 30 unique free ab exercises
  • Fast workouts (4-8 minutes)
  • Over 70 advanced workouts (IAP)
  • Video demonstrations by celebrity trainer
  • Ab shredding meal plans (IAP)
  • Workout shuffle for variety
  • Progress tracking with photos
Features
Read full description

The #1 Ab Workout App is back! As featured by Apple in 'Best new apps' Train like a pro with these elite ab workouts, get that 6 pack and NEVER plateau again! The new 6 Pack Promise builds on the original #1 ab training app to bring you a free basic workout program with the full program and as a single upgrade via in-app purchase. Created by celebrity pro athlete trainer Jeff Cavaliere, the 6 Pack Promise ab workout brings you the same exact ab workouts used to keep today's elite professional athletes in game-ready shape while helping them carve out 6 pack ABs. Features: — • 30 unique FREE ab exercises to get you pumped! • Convenient fast workouts, ranging from 4-8 Minutes! • Over 70 additional ab forming advanced workouts using IAP to keep it fresh and exciting • Video demonstrations of all 105 ab crushing exercises by celebrity pro trainer Jeff Cavaliere • Designed for all levels, whether you are a gym newcomer or weekend warrior • Unlock the ab shredding meal plans to provide the ultimate one-two punch in gaining your 6 pack. • The Shuffle feature allows you to create a different ab workout everyday so you NEVER plateau. • Track your progress with regular photos and share them on your favourite social network • Keep up to date and learn with the latest AthleanX videos • Favorite workouts to do them again! • Never wait for videos to download again with offline access mode. •Play music from your favourite music player app while working out! •Track your workouts with Health integration. Why do you need this: — Imagine yourself 56 days from now, with a 6-pack … Getting a 6-pack requires 2 things: The right workouts and right nutrition plan. Almost all AB apps fall short in delivering you this 1-2 punch, but the 6 Pack Promise App Delivers! Most ab apps focus on a 3-4 ab movements leading to you plateau after a workout or 2. The 6 Pack Promise app keeps things fresh with a unique ab workout everyday and the ability to ‘shuffle’ workouts to over 1,000,000 unique ab combinations. That combined with a comprehensive meal plan makes this THE ab app to have. Whether you prefer a step-by-step, day-by-day plan or simply like the challenges that come from an unpredictable workout...we've got you covered. This app will stay on your phone for a while and will be well worth the investment! If you want to look like a pro athlete, you've got to train like one. Now you can with the 6 Pack Promise Plus by ATHLEAN-X.

About

Built Different Athletes

Features
Read full description

Built Different is a fitness membership for the whole household — short, coach-led workouts you can do together at home, and a simple way to keep showing up week after week. ON-DEMAND WORKOUTS A growing library of quick follow-along workouts you can fit into any day. No equipment needed, and each workout shows its moves before you start. GOALS, STREAKS AND BADGES Set a weekly goal, build a streak, and earn badges for showing up. Streaks count weeks, not days, so a rest day never breaks one. ONE ACCOUNT, EVERYONE INCLUDED Up to 6 participant profiles and 6 adults per household. The account holder sees what everyone did, and members get a progress recap by email every Sunday. LIVE CLASSES Join coach-led classes streamed on Instagram Live. RSVP in the app and we email the class link to the account holder before it starts, so it opens on a grown-up's device. Afterwards, enter the coach's workout code to earn your active minutes. BUILT TO BE SAFE • No ads. • No chat — nobody can message anyone in the app. • Purchases and links out of the app sit behind a parent PIN. • You can export or delete your account and everything in it from the Menu. FOUNDING FAMILY MEMBERSHIP Browse the app for free. Playing workouts needs the Founding Family membership: $9.99 a month or $89.99 a year, billed through your Apple Account. There is no free trial. Your membership renews automatically unless you turn off auto-renew at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the period ends. You can manage or cancel your membership in your Apple Account settings; deleting the app does not cancel it. Terms of Use: https://www.builtdifferentapp.com/legal/terms Privacy Policy: https://www.builtdifferentapp.com/legal/privacy

Screenshots

6 Pack Promise4 screens
Built Different Athletes4 screens

Verdict

The call

The clearest difference is update cadence: Built Different Athletes at weekly against 6 Pack Promise's every 3 months. On price, ads, in-app purchases 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. 6 Pack Promise sells 3 one-off in-app purchases and Built Different Athletes sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

6 Pack Promise ships an update every 3 months, Built Different Athletes weekly. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

Scorecard1 real difference · 9 level
6 Pack Promise versus Built Different Athletes: the parameters behind the verdict, then further details
Parameter6 Pack PromiseBuilt Different Athletes
PriceFreeFree
Rating4.7 (4.7K ratings) — better—
Positive reviews79.7% of reviews—
Number of ratings4.7K — better—
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.5 — better16.0
Further details — not scored
Size77 MB21 MB
Age rating4+4+
DeveloperSports Performance Factory LLCUltimate Team Posters

Bugs and requests

6 Pack Promise

Reported bugs

4 issues
  • Workouts not loading or freezing
  • Timer and audio issues
  • Incompatibility with newer iOS versions
  • Inability to progress past certain weeks

Requested features

5 requests
  • Ability to favorite individual exercises
  • Option to create custom workout routines
  • Integration with Apple Health or other fitness apps
  • More beginner-friendly exercise options
  • Improved user interface and navigation

Built Different Athletes

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

6 Pack Promise

One-time3
  • Exercise Group 1$0.99
  • Exercise Group 2$0.99
  • Full Version$2.99
2 purchases

Built Different Athletes

Subscriptions2
  • Founding Family Monthly$9.991 Month
  • Founding Family Annual$89.991 Year

Questions

Is 6 Pack Promise free?
6 Pack Promise is free to download, with in-app purchases available.
Is Built Different Athletes free?
Built Different Athletes is free to download, with in-app purchases available.
Do 6 Pack Promise or Built Different Athletes have ads?
Neither 6 Pack Promise nor Built Different Athletes shows ads.
Which is updated more often, 6 Pack Promise or Built Different Athletes?
6 Pack Promise ships an update every 3 months, and Built Different Athletes weekly. Most recently, 6 Pack Promise was updated on October 16, 2026 and Built Different Athletes on October 8, 2026.

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