# ChordProg Ear Trainer vs Grindstone

The clearest difference is in-app purchases: Grindstone at none against ChordProg Ear Trainer's 3. ChordProg Ear Trainer's advantage is iOS requirement (14.0 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. ChordProg Ear Trainer sells 3 in-app purchases, starting at $2.99 per month. Grindstone asks for nothing beyond the download.

## The numbers

| Metric | ChordProg Ear Trainer | Grindstone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (16 ratings)](https://appshunter.io/ios/app/chordprog-ear-trainer/id1454739512/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 116 MB | 1 MB |
| Requires iOS | **14.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DevDa AS](https://appshunter.io/developer/1708225323) | [MARGAUX SJAAN HAYES](https://appshunter.io/developer/6809380462) |

## What reviewers say

### ChordProg Ear Trainer

[App page](https://appshunter.io/ios/app/chordprog-ear-trainer/id1454739512)

This app offers a realistic music training experience by using real audio clips to teach chord progressions, intervals, chords, and scales. It provides over 500 audio clips for practice and is designed to help prepare users for ear training tests.

**Highlights:** Chord progression recognition, Interval recognition exercises, Chord recognition exercises, Scale recognition exercises, 500+ real audio clips, Music theory exploration, Regular updates with new features

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly premium subscription! | $2.99 | per month |
| Yearly Premium Subscription! | $24.99 | per year |
| Premium Access | $9.99 | one-time |


### Grindstone

[App page](https://appshunter.io/ios/app/grindstone/id6809380460)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ChordProg Ear Trainer free?

ChordProg Ear Trainer is free to download, with in-app purchases available.

### Is Grindstone free?

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

### Do ChordProg Ear Trainer or Grindstone have ads?

Neither ChordProg Ear Trainer nor Grindstone shows ads.

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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.*