# In Theory vs ddtctmcc

The clearest difference is update cadence: ddtctmcc at daily against In Theory's weekly. ddtctmcc also leads on iOS requirement (9.0 vs 13.0). In Theory's advantage is price ($4.99 vs $5.99). On rating, ratings volume, ads and in-app purchases there is nothing between them.

In Theory costs $4.99 and ddtctmcc $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for In Theory against 5.0 for ddtctmcc. Both are backed by a comparable volume of ratings — 4 and 3 respectively.

In Theory ships an update weekly, ddtctmcc daily. Both last shipped on November 3, 2026.

## The numbers

| Metric | In Theory | ddtctmcc |
| --- | --- | --- |
| Price | **$4.99** | $5.99 |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/in-theory-interval-keyboard/id1667984658/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/ddtctmcc/id6453841257/reviews) |
| Number of ratings | **4** | 3 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Monetization | Paid | Paid |
| Size | 7 MB | 7 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cem Olcay](https://appshunter.io/developer/523633853) | [Alexey Nadzharov](https://appshunter.io/developer/729549192) |

## 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


### ddtctmcc

[App page](https://appshunter.io/ios/app/ddtctmcc/id6453841257)

This app translates touch gestures into MIDI Control Change messages. It offers two recording modes, scene management for storing settings, and extended timing controls for loops. It can run standalone or as an AUv3 plugin.

**Highlights:** 2D touch area for MIDI values, Loop and Once gesture recording, Scene support with transition times, Extended timing and host tempo sync, Multiple output settings per instance

**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 ddtctmcc free?

ddtctmcc costs $5.99, with no in-app purchases.

### Which has better reviews, In Theory or ddtctmcc?

In Theory and ddtctmcc are both rated 5.0 out of 5 on the App Store, from 4 and 3 ratings respectively.

### Do In Theory or ddtctmcc have ads?

Neither In Theory nor ddtctmcc shows ads.

### Which is updated more often, In Theory or ddtctmcc?

In Theory ships an update weekly, and ddtctmcc daily. Most recently, In Theory was updated on November 3, 2026 and ddtctmcc on November 3, 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.*