# COMMON LANGUAGE vs CHI50

The clearest difference is update cadence: CHI50 at every 4 weeks against COMMON LANGUAGE's every 7 months. CHI50 also leads on ratings volume (53 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for COMMON LANGUAGE against 5.0 for CHI50. That said, the two scores are not equally well evidenced: CHI50 has 53 ratings behind it against 1, so its average is the more settled of the two.

COMMON LANGUAGE ships an update every 7 months, CHI50 every 4 weeks. The most recent releases landed on September 9, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | COMMON LANGUAGE | CHI50 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/common-language/id6479458748/reviews) | [5.0 (53 ratings)](https://appshunter.io/ios/app/chi50/id6479721304/reviews) |
| Number of ratings | 1 | **53** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 121 MB | 38 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Sutra Fitness, Inc.](https://appshunter.io/developer/914371834) | [Byrd Fitness LLC](https://appshunter.io/developer/1737074121) |

## What reviewers say

### COMMON LANGUAGE

[App page](https://appshunter.io/ios/app/common-language/id6479458748)

This app offers a variety of movement-based workouts, including dance, rebounding, strength, and wellness routines. It aims to promote happiness, fitness, and community through music and guided sessions. Enjoy hundreds of workouts anytime, anywhere, to fit your lifestyle.

**Highlights:** Rhythm-based movement, Dance workouts, Lymphatic rebounding, Strength and sculpt routines, Wellness sessions, Hundreds of on-demand workouts, Accessible anywhere, anytime

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

**In-app purchases:** none


### CHI50

[App page](https://appshunter.io/ios/app/chi50/id6479721304)

Book fitness classes and manage your membership for state-of-the-art Megaformer machine workouts. Engage muscles you've never used before in 50-minute sessions designed to tone, sculpt, shake, and sweat.

**Highlights:** Book fitness classes, Purchase credits, Buy memberships, Manage account, State-of-the-art Megaformer workouts

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

**In-app purchases:** none


## Frequently asked questions

### Is COMMON LANGUAGE free?

COMMON LANGUAGE is free to download, with no in-app purchases.

### Is CHI50 free?

CHI50 is free to download, with no in-app purchases.

### Which has better reviews, COMMON LANGUAGE or CHI50?

COMMON LANGUAGE and CHI50 are both rated 5.0 out of 5 on the App Store, from 1 and 53 ratings respectively.

### Do COMMON LANGUAGE or CHI50 have ads?

Neither COMMON LANGUAGE nor CHI50 shows ads.

### Which is updated more often, COMMON LANGUAGE or CHI50?

COMMON LANGUAGE ships an update every 7 months, and CHI50 every 4 weeks. Most recently, COMMON LANGUAGE was updated on September 9, 2026 and CHI50 on September 22, 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.*