# Autony vs In Theory

The clearest difference is review sentiment: In Theory at 100% against Autony's 61%. In Theory also leads on rating (5.0 vs 4.5) and iOS requirement (13.0 vs 15.6). Autony's advantage is ratings volume (39 vs 4) and price ($3.99 vs $4.99). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Autony costs $3.99 and In Theory $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

In Theory holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Autony has 39 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 61% of Autony's written reviews are positive against 100% of In Theory's.

Autony ships an update every 5 days, In Theory weekly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Autony | In Theory |
| --- | --- | --- |
| Price | **$3.99** | $4.99 |
| Rating | [4.5 (39 ratings)](https://appshunter.io/ios/app/autony/id1440149545/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/in-theory-interval-keyboard/id1667984658/reviews)** |
| Number of ratings | **39** | 4 |
| Positive reviews | 60.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Paid | Paid |
| Size | 1 MB | 7 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pagefall limited](https://appshunter.io/developer/1440149544) | [Cem Olcay](https://appshunter.io/developer/523633853) |

## What reviewers say

### Autony

[App page](https://appshunter.io/ios/app/autony/id1440149545)

This app generates evolving musical sequences using a MIDI signal. It can be constrained to scales and chords, transposed, and mutated for dynamic musical output. All controls are MIDI-automatable and it requires a host app to function.

**Highlights:** Generates evolving musical sequences, MIDI output for synths and hardware, Constrain sequences to scales and chords, On-the-fly transposition, Sequence mutation for dynamic evolution, MIDI automation of all controls

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Autony free?

Autony costs $3.99, with no in-app purchases.

### Is In Theory free?

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

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

In Theory is rated higher. Autony averages 4.5 out of 5 from 39 ratings, while In Theory averages 5.0 from 4 ratings.

### Do Autony or In Theory have ads?

Neither Autony nor In Theory shows ads.

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

Autony ships an update every 5 days, and In Theory weekly. Most recently, Autony was updated on November 2, 2026 and In Theory 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.*