# The Underground PHX vs BURN A Lagree Studio

The clearest difference is ratings volume: The Underground PHX at 79 against BURN A Lagree Studio's 1. BURN A Lagree Studio's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 16.0). On price, rating, update cadence and ads 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 The Underground PHX against 5.0 for BURN A Lagree Studio. That said, the two scores are not equally well evidenced: The Underground PHX has 79 ratings behind it against 1, so its average is the more settled of the two.

The Underground PHX ships an update every 3 weeks, BURN A Lagree Studio every 2 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | The Underground PHX | BURN A Lagree Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (79 ratings)](https://appshunter.io/ios/app/the-underground-phx/id6461867568/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/burn-a-lagree-studio/id6747384157/reviews) |
| Number of ratings | **79** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Ad-supported | Ad-supported |
| Size | 37 MB | 128 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Modern Yoga LLC](https://appshunter.io/developer/1702757443) | [Highway 101 LLC](https://appshunter.io/developer/1821170007) |

## What reviewers say

### The Underground PHX

[App page](https://appshunter.io/ios/app/the-underground-phx/id6461867568)

Book fitness classes, discover instructors, and explore playlists. This app allows you to reserve your spot, check in, and even pre-order studio add-ons directly from your phone.

**Highlights:** Book classes, Check-in for class, Pre-order add-ons, Find classes by day, time, instructor, Explore instructors and playlists, Get promotion alerts

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### BURN A Lagree Studio

[App page](https://appshunter.io/ios/app/burn-a-lagree-studio/id6747384157)

Plan and schedule Megaformer classes powered by the Lagree Fitness Method. Strengthen, lengthen, and sculpt your body with this spring-based resistance training. Book classes, join waitlists, and purchase packages conveniently from your phone.

**Highlights:** Schedule Megaformer classes, Lagree Fitness Method workouts, View class schedules, Make reservations, Join waitlists, Purchase class packages

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

**In-app purchases:** none


## Frequently asked questions

### Is The Underground PHX free?

The Underground PHX is free to download, with no in-app purchases.

### Is BURN A Lagree Studio free?

BURN A Lagree Studio is free to download, with no in-app purchases.

### Which has better reviews, The Underground PHX or BURN A Lagree Studio?

The Underground PHX and BURN A Lagree Studio are both rated 5.0 out of 5 on the App Store, from 79 and 1 ratings respectively.

### Do The Underground PHX or BURN A Lagree Studio have ads?

Both The Underground PHX and BURN A Lagree Studio show ads.

### Which is updated more often, The Underground PHX or BURN A Lagree Studio?

The Underground PHX ships an update every 3 weeks, and BURN A Lagree Studio every 2 weeks. Most recently, The Underground PHX was updated on November 3, 2026 and BURN A Lagree Studio on October 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.*