# Evolve21 vs The Underbelly

The clearest difference is review sentiment: The Underbelly at 99% against Evolve21's 36%. The Underbelly also leads on rating (4.9 vs 3.8) and ratings volume (792 vs 6). Evolve21's advantage is in-app purchases (none vs 2) and update cadence (every 3 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. The Underbelly sells 2 in-app purchases, starting at $19.99 per month. Evolve21 asks for nothing beyond the download.

The Underbelly holds the better App Store score, 4.9 against 3.8. That said, the two scores are not equally well evidenced: The Underbelly has 792 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 36% of Evolve21's written reviews are positive against 99% of The Underbelly's.

Evolve21 ships an update every 3 days, The Underbelly every 2 months. Both last shipped on October 12, 2026.

## The numbers

| Metric | Evolve21 | The Underbelly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (6 ratings)](https://appshunter.io/ios/app/evolve21/id1212986646/reviews) | **[4.9 (792 ratings)](https://appshunter.io/ios/app/the-underbelly/id1446751733/reviews)** |
| Number of ratings | 6 | **792** |
| Positive reviews | 36.4% of reviews | **98.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 months |
| Monetization | **Free** | Subscription |
| Size | 246 MB | 98 MB |
| Requires iOS | **10.0** | 16.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple TV** |
| Age rating | 12+ | 12+ |
| Developer | [Cerebral Palsy Foundation](https://appshunter.io/developer/1216920739) | [Fearless LLC](https://appshunter.io/developer/1446751732) |

## What reviewers say

### Evolve21

[App page](https://appshunter.io/ios/app/evolve21/id1212986646)

Engage in a 21-day wellness program with daily 7-minute routines in cardio, yoga, or meditation. Track your progress, earn awards, and support the Cerebral Palsy Foundation. Customize your fundraising page to involve friends and family in your journey and impact.

**Highlights:** Daily 7-minute routines, Cardio, Yoga, Meditation options, Progress tracking, Achievement awards, Fundraising customization, Group participation

**Features:** macOS Compatibility

**In-app purchases:** none


### The Underbelly

[App page](https://appshunter.io/ios/app/the-underbelly/id1446751733)

This app offers inclusive yoga and meditation sessions for all bodies and skill levels. Explore guided practices, breathwork, and soothing playlists to enhance flexibility, self-love, and holistic well-being. Practice anytime, anywhere in a welcoming environment.

**Highlights:** 200+ inclusive yoga classes, Queer-friendly environment, Guided sessions for all levels, Meditation and breathwork playlists, Monthly livestream classes, Ad-free streaming videos

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Underbelly Monthly | $19.99 | per month |
| The Underbelly Yearly | $179.99 | per year |


## Frequently asked questions

### Is Evolve21 free?

Evolve21 is free to download, with no in-app purchases.

### Is The Underbelly free?

The Underbelly is free to download, with in-app purchases available.

### Which has better reviews, Evolve21 or The Underbelly?

The Underbelly is rated higher. Evolve21 averages 3.8 out of 5 from 6 ratings, while The Underbelly averages 4.9 from 792 ratings.

### Do Evolve21 or The Underbelly have ads?

Neither Evolve21 nor The Underbelly shows ads.

### Which is updated more often, Evolve21 or The Underbelly?

Evolve21 ships an update every 3 days, and The Underbelly every 2 months. Most recently, Evolve21 was updated on October 12, 2026 and The Underbelly on October 12, 2026.

---

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