# UNDERCARD vs Catalyst Training Co

The clearest difference is device support: Catalyst Training Co at 4 against UNDERCARD's 2. On price, update cadence, 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.

UNDERCARD ships an update fortnightly, Catalyst Training Co every 3 weeks. The most recent releases landed on October 1, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | UNDERCARD | Catalyst Training Co |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 194 MB | 153 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [UNDERCARD BOXING](https://appshunter.io/developer/1545529235) | [Outer Strength Fitness Pty Ltd](https://appshunter.io/developer/1790202247) |

## What reviewers say

### UNDERCARD

[App page](https://appshunter.io/ios/app/undercard/id1604596271)

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

**In-app purchases:** none


### Catalyst Training Co

[App page](https://appshunter.io/ios/app/catalyst-training-co/id6755543686)

**Features:** Apple Wallet, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is UNDERCARD free?

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

### Is Catalyst Training Co free?

Catalyst Training Co is free to download, with no in-app purchases.

### Do UNDERCARD or Catalyst Training Co have ads?

Neither UNDERCARD nor Catalyst Training Co shows ads.

### Which is updated more often, UNDERCARD or Catalyst Training Co?

UNDERCARD ships an update fortnightly, and Catalyst Training Co every 3 weeks. Most recently, UNDERCARD was updated on October 1, 2026 and Catalyst Training Co on September 13, 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.*