Comparison

Butterfly Challenge vs Kettlebell Functional Training

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

Head to head
About

Butterfly Challenge

This program offers a 14-day challenge designed to improve goalie flexibility with daily 10-minute sessions. It focuses on four key pillars of flexibility, providing a structured approach to enhance performance and reduce injury risk.

Highlights
  • 14-day structured program
  • Daily 10-minute sessions
  • Focus on 4 pillars of flexibility
  • Goalie-specific drills
  • Video tutorials
Features
Read full description

● NEW & IMPROVED BUTTERFLY CHALLENGE 3.0 Are you willing to invest 10-minutes per day for 14-days to take one step toward your goal of becoming the best goalie you can be? Then this is the best place to start! Each session is less than 15-minutes and covers all four pillars: ● PROGRAM OUTLINE: THE 4 PILLARS OF FLEXIBILITY FOR GOALIES There are four pillars of flexibility for hockey goalies and just like the pillars that hold up a Greek temple, they are all important – you cannot take one away and maintain the integrity of the structure. So please do not skip the ones that you do not like, if you want the benefits, you build all four pillars. 1. Consistency 2. Myofascial Release 3. Asymmetrical Stretching 4. Respect YOUR Anatomy 4. Respect YOUR Anatomy ● NEXT STEPS - Keep doing the Butterfly Challenge 3.0 - you will continue to marginal improvements over time. - Check out GoalieTrainingPro.com to find more goalie specific off-ice drills and exercises that will help your speed and stamina on the ice. - Future, advanced, programs and apps are in-the-works. Stay tuned! ● ABOUT THE COACH Maria Mountain, MSc is a full-time strength coach, speaker, and goalie training consultant. She is the founder of GoaliteTrainingPro.com, the leading authority for effective, scientifically supported off-ice training that actually helps goalies perform better on the ice. She has helped goalies at every level from AA, Jr, ECHL, European Pro, Adult League, AHL, and the NHL play to their potential, win more games and experience fewer injuries. ● RESEARCH STUDY This program was designed based on my 6-years of University studying Kinesiology, over 20-years as a Strength Coach, tens of thousands of dollars on continuing education and more than 17-years working with goalies. ● BEFORE YOU START - This program is NOT FOR CHILDREN UNDER 14. - This program is NOT A SUBSTITUTE FOR MEDICAL ADVICE. - This program is NOT A SUBSTITUTE FOR A SUPERVISED FITNESS PROGRAM. - This program should NOT BE PAINFUL OR UNCOMFORTABLE. None of the stretches in this program should give you pain. If they do, stop right away and get assessed by a sport physical therapist or your preferred health care provider. Make sure you WATCH ALL THE VIDEO tutorials BEFORE you start the program. And remember that improving your mobility takes time, do not force the movements in this program, that will not help. IT IS ALWAYS A GOOD IDEA TO CONSULT WITH YOUR HEALTH CARE PROVIDER PRIOR TO STARTING A NEW FITNESS PROGRAM. Neither Maria Mountain, Revolution Conditioning, GoalieTrainingPro.com, nor implicitli, LLC shall assume liability for any injury or disability. This application is intended for those who are familiar with proper exercise technique. For more information, visit GoalieTrainingPro.com

About

Kettlebell Functional Training

Achieve your fitness goals with custom workout programs designed for an integrated, balanced approach. This app focuses on varied exercises to prevent injuries and plateaus, maximizing your results and motivating you to move, look, and feel your best.

Highlights
  • Custom workout programs
  • Integrated, balanced approach
  • Exercise variety
  • Injury risk minimization
  • Plateau prevention
  • Motivation tools
Features
Read full description

Move, look and feel your best with I.A.H. Functional training. An integrated, balanced approach to custom workout programs created to educate and motivate you. Constantly focusing on different outcomes and through constant changing of the types of exercises performed, integrated training can minimize the risk of overuse injuries and hitting a plateau thus maximizing results. Standard Apple's terms of service apply: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://integrityattitudehustle.ymove.app/privacy-policy-app

Screenshots

Butterfly Challenge4 screens
Kettlebell Functional Training3 screens

Verdict

The call

The clearest difference is in-app purchases: Butterfly Challenge at none against Kettlebell Functional Training's 8. Butterfly Challenge also leads on iOS requirement (13.0 vs 16.6). Kettlebell Functional Training's advantage is update cadence (every 2 months vs every 63 months) and rating (4.8 vs 4.6). On price, review sentiment, 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. Kettlebell Functional Training sells 8 in-app purchases, starting at $19.99 per month. Butterfly Challenge asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Kettlebell Functional Training holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 51 and 248 respectively. Written reviews point the same way: 67% of Butterfly Challenge's written reviews are positive against 71% of Kettlebell Functional Training's.

UpkeepUpdate frequency

Butterfly Challenge ships an update every 63 months, Kettlebell Functional Training every 2 months. Both last shipped on October 16, 2026.

Scorecard6 real differences · 4 level
Butterfly Challenge versus Kettlebell Functional Training: the parameters behind the verdict, then further details
ParameterButterfly ChallengeKettlebell Functional Training
PriceFreeFree
Rating4.6 (51 ratings)4.8 (248 ratings) — better
Positive reviews66.7% of reviews70.6% of reviews — better
Number of ratings51248 — better
Update frequencyEvery 63 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better16.6
Further details — not scored
Size62 MB93 MB
Age rating4+4+
Developerimplicitli, LLCAdriell Mayes

Customer experience

Butterfly Challenge

All ratings50 ratings
Positive88.0%
Neutral4.0%
Negative8.0%
Written reviews18 reviews
Positive66.7%
Neutral5.6%
Negative27.8%

Kettlebell Functional Training

All ratings248 ratings
Positive96.4%
Neutral1.6%
Negative2.0%
Written reviews17 reviews
Positive70.6%
Neutral11.8%
Negative17.6%

Bugs and requests

Butterfly Challenge

Not enough reviews yet to summarise bugs or requests.

Kettlebell Functional Training

Reported bugs

4 issues
  • 🐛 Program week missing days
  • 🐛 Some videos don't pop up
  • 🐛 Videos not edited to show exact flow
  • 🐛 In-app videos don't work for some plans

Requested features

7 requests
  • 💡 Ability to favorite exercises
  • 💡 Input kettlebell weight and track progression
  • 💡 Recommended beginner weights/tiers
  • 💡 Recommended RPE per set
  • 💡 Coaching cues for exercises
Show 2 more
  • 💡 Specific order/sequence for routines
  • 💡 App update and bug fixes

In-app purchases

None

Butterfly Challenge

No in-app purchases

8 purchases

Kettlebell Functional Training

Subscriptions1
  • Memberships1 Month trial$19.991 Month
One-time7
  • Single Kettlebell Program$79.99
  • Single-kettlebell Circuit$79.99
  • Mobility & Kettlebell Flows$84.99
Show 4 more
  • Single Kettlebell Functional$89.99
  • Functional Muscle Building$99.99
  • Kettlebells & Bodyweight$99.99
  • Posterior Chain Strength$99.99

Questions

Is Butterfly Challenge free?
Butterfly Challenge is free to download, with no in-app purchases.
Is Kettlebell Functional Training free?
Kettlebell Functional Training is free to download, with in-app purchases available.
Which has better reviews, Butterfly Challenge or Kettlebell Functional Training?
Kettlebell Functional Training is rated higher. Butterfly Challenge averages 4.6 out of 5 from 51 ratings, while Kettlebell Functional Training averages 4.8 from 248 ratings.
Do Butterfly Challenge or Kettlebell Functional Training have ads?
Neither Butterfly Challenge nor Kettlebell Functional Training shows ads.
Which is updated more often, Butterfly Challenge or Kettlebell Functional Training?
Butterfly Challenge ships an update every 63 months, and Kettlebell Functional Training every 2 months. Most recently, Butterfly Challenge was updated on October 16, 2026 and Kettlebell Functional Training on October 16, 2026.

Other comparisons