# KapTrack vs Phx Underground

The clearest difference is update cadence: KapTrack at every 2 weeks against Phx Underground's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

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

KapTrack ships an update every 2 weeks, Phx Underground every 5 months. The most recent releases landed on June 21, 2026 and May 19, 2026 respectively.

## The numbers

| Metric | KapTrack | Phx Underground |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Size | 23 MB | 47 MB |
| Requires iOS | 13.4 | 13.4 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple TV** |
| Age rating | 17+ | 4+ |
| Developer | [CS3 Consultancy Corp](https://appshunter.io/developer/1646001897) | [The Phoenix Underground Church Corporation](https://appshunter.io/developer/1720847268) |

## What reviewers say

### KapTrack

[App page](https://appshunter.io/ios/app/kaptrack/id6468761838)

**Features:** macOS Compatibility

**In-app purchases:** none


### Phx Underground

[App page](https://appshunter.io/ios/app/phx-underground/id6474156612)

**In-app purchases:** none


## Frequently asked questions

### Is KapTrack free?

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

### Is Phx Underground free?

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

### Do KapTrack or Phx Underground have ads?

Neither KapTrack nor Phx Underground shows ads.

### Which is updated more often, KapTrack or Phx Underground?

KapTrack ships an update every 2 weeks, and Phx Underground every 5 months. Most recently, KapTrack was updated on June 21, 2026 and Phx Underground on May 19, 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.*