# Composia

> Music

Canonical page: [https://chrome-stats.com/d/id1489779313](https://chrome-stats.com/d/id1489779313)

## Overview

- **ID:** `id1489779313`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** PDJ Apps
- **Category:** Music
- **Version:** 2.1
- **Last updated:** 2024-01-14
- **First published:** 2019-12-26
- **Size:** 14 MB
- **Data as of:** 2026-09-03
- **Store listing:** [Apple App Store](https://apps.apple.com/au/app/composia/id1489779313)
- **Privacy policy:** [http://pdjapps.com](http://pdjapps.com/)

## Description

Create compositions and practice music theory with Composia. Export your creations to MIDI or PDF.

Composia is a project I started in order to apply music theory concepts - and help me learn them. 

There are a number components that I've had to build: theory, database, sheet music generation, menu system, and synth.

- Theory
So far I have programmed in Keys, Solfege, Scales, Chords, Phrases, Figures, Compositions and Part Writing. Getting the part-writing to work was very challenging. It doesn't follow the rules 100% in order to allow the user some more freedom to create.

- Database
I had to create a way to store compositions in such a way to retain context and allow AI to use for generation in future versions.

- Sheet Music Generation
The most difficult part so far has been the sheet music generation & exporting with realtime pinch zoom. At first I thought it wouldn't be SO complicated but turns out allowing for 4 voices and all the variations of notes and rests is very tricky. There is still a lot to do but it's at least stable now. 

- Menu System
Since I had to keep creating different menus to test various aspects I decided to go with a "neuron" menu system. This was also a giant pain to build but has made things easy once it was put into place.

- Synth
This is currently the weakest part of the project, but it produces a basic sound for the notes. I decided to use overtones to make a note sound louder. The louder the note the more overtones are attached.

## Rankings

- #1,167,673 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1489779313)