# Chord Invaders vs Hark

The clearest difference is device support: Chord Invaders at 3 against Hark's 1. Chord Invaders also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Chord Invaders sells 1 one-off in-app purchase and Hark sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Chord Invaders | Hark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hark-ear-training/id6809023239/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | — | Freemium |
| Size | 2 MB | 11 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Neerav Mehta](https://appshunter.io/developer/1896774458) | [Ilia Usatov](https://appshunter.io/developer/1868442271) |

## What reviewers say

### Chord Invaders

[App page](https://appshunter.io/ios/app/chord-invaders/id6771198820)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Levels | $1.99 | one-time |


### Hark

[App page](https://appshunter.io/ios/app/hark-ear-training/id6809023239)

This app trains musicians to identify notes within a musical key, focusing on their relationship to the tonic. It offers various training modes, including single notes, melodies, and chord progressions, with hands-free operation for convenient practice.

**Highlights:** Identify notes as scale degrees, Hands-free training mode, Multiple training modes (degrees, melodies, chords, progressions), Visual staff with colored notes, Explore any note in any key, Multiple instrument sounds

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hark Pro | $19.99 | one-time |


## Frequently asked questions

### Is Chord Invaders free?

Chord Invaders is free to download, with in-app purchases available.

### Is Hark free?

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

### Do Chord Invaders or Hark have ads?

Neither Chord Invaders nor Hark shows ads.

### Which is updated more often, Chord Invaders or Hark?

Chord Invaders ships an update every 4 days, and Hark every 4 days. Most recently, Chord Invaders was updated on October 8, 2026 and Hark on October 11, 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.*