# Guitar Intervals Pro vs Harmonica Trainer

The clearest difference is update cadence: Harmonica Trainer at every 8 days against Guitar Intervals Pro's every 40 months. Harmonica Trainer also leads on price ($0.99 vs $1.99). Guitar Intervals Pro's advantage is iOS requirement (12.0 vs 14.5). On ads, in-app purchases and device support there is nothing between them.

Guitar Intervals Pro costs $1.99 and Harmonica Trainer $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Guitar Intervals Pro ships an update every 40 months, Harmonica Trainer every 8 days. The most recent releases landed on September 28, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Guitar Intervals Pro | Harmonica Trainer |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 8 days** |
| Size | 6 MB | 19 MB |
| Requires iOS | **12.0** | 14.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrii Pirumov](https://appshunter.io/developer/1301462412) | [Kemper Consulting, LLC](https://appshunter.io/developer/1694185194) |

## What reviewers say

### Guitar Intervals Pro

[App page](https://appshunter.io/ios/app/guitar-intervals-pro/id1335328670)

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

**In-app purchases:** none


### Harmonica Trainer

[App page](https://appshunter.io/ios/app/harmonica-trainer/id6450636516)

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

**In-app purchases:** none


## Frequently asked questions

### Is Guitar Intervals Pro free?

Guitar Intervals Pro costs $1.99, with no in-app purchases.

### Is Harmonica Trainer free?

Harmonica Trainer costs $0.99, with no in-app purchases.

### Do Guitar Intervals Pro or Harmonica Trainer have ads?

Neither Guitar Intervals Pro nor Harmonica Trainer shows ads.

### Which is updated more often, Guitar Intervals Pro or Harmonica Trainer?

Guitar Intervals Pro ships an update every 40 months, and Harmonica Trainer every 8 days. Most recently, Guitar Intervals Pro was updated on September 28, 2026 and Harmonica Trainer on October 4, 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.*