Comparison

MN Challenge vs Flex Method

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

Head to head
About

MN Challenge

This 8-week program helps you achieve fitness and health goals by tracking workouts, nutrition, habits, and measurements with coach guidance. Features include exercise videos, meal tracking, habit monitoring, goal setting, and community support.

Highlights
  • 8-week fitness program
  • Workout and nutrition tracking
  • Exercise and workout videos
  • Habit monitoring
  • Goal setting and progress tracking
  • Coach messaging
  • Digital communities
  • Wearable device integration
Features
Read full description

With the Muscle Nation Get Fit Challenge App, you gain access to an 8-week program to help you reach your fitness and health goals! You can follow & track your workouts, your nutrition, your lifestyle habits, measurements, and results–all with the help of your coaches. FEATURES: - Access training plans and track workouts - Follow along to exercise and workout videos - Track your meals and make better food choices - Stay on top of your daily habits - Set health and fitness goals and track progress toward your goals - Gain milestone badges for achieving new personal bests and maintaining habit streaks - Message your coach in real-time - Be part of digital communities to meet people with similar health goals and stay motivated - Track body measurements and take progress photos - Get push notification reminders for scheduled workouts and activities - Connect your Apple Watch to track workouts, steps, habits, and more right from your wrist - Connect to other wearable devices and apps like the Apple Health App, Garmin, Fitbit, MyFitnessPal, and Withings devices to track workouts, sleep, nutrition, and body stats and composition Download the app today!

About

Flex Method

Features
Read full description

Flex Method is a personalised training and nutrition app designed to help you build strength, improve body composition, and create sustainable habits that fit your lifestyle. Whether your goal is fat loss, muscle gain, or simply feeling better day to day, Flex Method provides structured guidance backed by evidence based coaching principles. Inside the app, you’ll receive customised training programs, tailored nutrition guidance, and clear weekly structure to remove guesswork and overwhelm. Programs are designed to progress with you over time, adapting to your experience level, schedule, and goals so you can stay consistent and confident in your approach. Flex Method goes beyond generic workouts by focusing on accountability, education, and long term results. Track your workouts, monitor progress, and build routines that support your health and performance without extremes or quick fixes. Built by experienced coaches, Flex Method is designed to support real people with real lives. The app brings professional level structure and clarity into one simple platform, helping you train smarter, eat better, and stay consistent for the long term.

Screenshots

MN Challenge4 screens
Flex Method4 screens

Verdict

The call

The clearest difference is update cadence: Flex Method at every 3 days against MN Challenge's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

MN Challenge ships an update every 5 weeks, Flex Method every 3 days. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.

Scorecard1 real difference Β· 7 level
MN Challenge versus Flex Method: the parameters behind the verdict, then further details
ParameterMN ChallengeFlex Method
PriceFreeFree
Positive reviews0.0% of reviewsβ€”
Update frequencyEvery 5 weeksEvery 3 days β€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeβ€”
DevicesiPhone, iPad, iPod, Apple Watch β€” betteriPhone, iPad, iPod
Requires iOS15.115.1
Further details β€” not scored
Size185 MB56 MB
Age rating4+4+
DeveloperMuscle NationMillie Marshall Fitness

In-app purchases

None

MN Challenge

No in-app purchases

None

Flex Method

No in-app purchases

Questions

Is MN Challenge free?
MN Challenge is free to download, with no in-app purchases.
Is Flex Method free?
Flex Method is free to download, with no in-app purchases.
Do MN Challenge or Flex Method have ads?
Neither MN Challenge nor Flex Method shows ads.
Which is updated more often, MN Challenge or Flex Method?
MN Challenge ships an update every 5 weeks, and Flex Method every 3 days. Most recently, MN Challenge was updated on October 6, 2026 and Flex Method on September 30, 2026.

Other comparisons