# The Underground Dance Centre vs Run The Flex

The clearest difference is review sentiment: Run The Flex at 100% against The Underground Dance Centre's 33%. Run The Flex also leads on iOS requirement (14.0 vs 16.0). The Underground Dance Centre's advantage is ads (none vs shown). On price, update cadence, in-app purchases and monetization model there is nothing between them.

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

The Underground Dance Centre ships an update every 3 weeks, Run The Flex every 2 weeks. The most recent releases landed on October 7, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | The Underground Dance Centre | Run The Flex |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Ad-supported | Ad-supported |
| Size | 192 MB | 47 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [8816255 Canada Corporation](https://appshunter.io/developer/1491630518) | [2842909 Ontario Limited](https://appshunter.io/developer/1658178530) |

## What reviewers say

### The Underground Dance Centre

[App page](https://appshunter.io/ios/app/the-underground-dance-centre/id982923580)

Plan and schedule your dance classes with this app. View schedules, sign up for sessions, and access studio location information. Optimize your time and convenience by managing your dance training from your mobile device.

**Highlights:** View class schedules, Sign up for classes, Access studio location, Link to social media, Mobile class management

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

**In-app purchases:** none


### Run The Flex

[App page](https://appshunter.io/ios/app/run-the-flex/id1658178528)

Join a vibrant dance community with drop-in classes and programs for all skill levels. This app allows you to easily sign up for sessions, monitor your progress, and manage your account within the studio's offerings.

**Highlights:** Sign up for dance classes, Track progress, Manage account, Drop-in classes, Hip Hop and street dance

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is The Underground Dance Centre free?

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

### Is Run The Flex free?

Run The Flex is free to download, with no in-app purchases.

### Do The Underground Dance Centre or Run The Flex have ads?

Run The Flex shows ads; The Underground Dance Centre does not.

### Which is updated more often, The Underground Dance Centre or Run The Flex?

The Underground Dance Centre ships an update every 3 weeks, and Run The Flex every 2 weeks. Most recently, The Underground Dance Centre was updated on October 7, 2026 and Run The Flex on October 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.*