# Muscle & Flow vs Backyard Boston

The clearest difference is update cadence: Muscle & Flow at monthly against Backyard Boston's every 10 months. 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.

Muscle & Flow ships an update monthly, Backyard Boston every 10 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Muscle & Flow | Backyard Boston |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/backyard-boston/id6740310250/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 10 months |
| Monetization | — | Free |
| Size | 91 MB | 121 MB |
| Requires iOS | **15** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Muscle & Flow](https://appshunter.io/developer/1694764222) | [Sutra Fitness, Inc.](https://appshunter.io/developer/914371834) |

## What reviewers say

### Muscle & Flow

[App page](https://appshunter.io/ios/app/muscle-and-flow/id1637484112)

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


### Backyard Boston

[App page](https://appshunter.io/ios/app/backyard-boston/id6740310250)

This app connects users with a fitness community and instructors in Boston. It allows you to book classes, monitor your fitness journey, and engage with fellow members. The platform emphasizes a supportive environment where hard work and presence are valued.

**Highlights:** Book fitness classes, Track fitness progress, Connect with community, Fitness instructor-created, Boston-based community focus

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Muscle & Flow free?

Muscle & Flow is free to download, with no in-app purchases.

### Is Backyard Boston free?

Backyard Boston is free to download, with no in-app purchases.

### Do Muscle & Flow or Backyard Boston have ads?

Neither Muscle & Flow nor Backyard Boston shows ads.

### Which is updated more often, Muscle & Flow or Backyard Boston?

Muscle & Flow ships an update monthly, and Backyard Boston every 10 months. Most recently, Muscle & Flow was updated on October 27, 2026 and Backyard Boston on October 24, 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.*