# In Theory vs Lyric Hack

The clearest difference is price: Lyric Hack at $0.99 against In Theory's $4.99. Lyric Hack also leads on iOS requirement (11.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

In Theory costs $4.99 and Lyric Hack $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | In Theory | Lyric Hack |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/in-theory-interval-keyboard/id1667984658/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Paid | — |
| Size | 7 MB | 65 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cem Olcay](https://appshunter.io/developer/523633853) | [Jonathan Pivar](https://appshunter.io/developer/883754214) |

## What reviewers say

### In Theory

[App page](https://appshunter.io/ios/app/in-theory-interval-keyboard/id1667984658)

This app provides a unique interval-based MIDI keyboard with over 110 scales. It allows for flexible chord creation by toggling additional intervals and notes from different octaves. It integrates with external MIDI keyboards and sequencers for advanced music production.

**Highlights:** Interval-based MIDI keyboard, Over 110 built-in scales, Customizable chord voicing, MIDI keyboard input support, MIDI CC message control, AUv3 plugin compatibility, Visual scale and note display

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

**In-app purchases:** none


### Lyric Hack

[App page](https://appshunter.io/ios/app/lyric-hack/id6599861234)

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

**In-app purchases:** none


## Frequently asked questions

### Is In Theory free?

In Theory costs $4.99, with no in-app purchases.

### Is Lyric Hack free?

Lyric Hack costs $0.99, with no in-app purchases.

### Do In Theory or Lyric Hack have ads?

Neither In Theory nor Lyric Hack 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.*