# MN Challenge vs Flex Method

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.

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

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.

## The numbers

| Metric | MN Challenge | Flex Method |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Free | — |
| Size | 185 MB | 56 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Muscle Nation](https://appshunter.io/developer/1672156020) | [Millie Marshall Fitness](https://appshunter.io/developer/1695013155) |

## What reviewers say

### MN Challenge

[App page](https://appshunter.io/ios/app/mn-challenge/id6467673322)

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:** Apple Wallet, Apple Watch app

**In-app purchases:** none


### Flex Method

[App page](https://appshunter.io/ios/app/flex-method/id6758858508)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*