# Bytebeat: Make Music with Code — Write a formula, hear music

> Write a formula, hear music (iPhone/iPad app by Ryo Tsudukihashi.)

- Source: https://appshunter.io/ios/app/bytebeat-make-music-with-code/id6811730170 (this page in markdown: same URL + `.md`)
- Developer: [Ryo Tsudukihashi](https://appshunter.io/developer/1320583602)
- Category: Music, Developer Tools
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: American English
- Released: 2026-09-29
- Data updated: 2026-10-06
- User reviews in markdown: https://appshunter.io/ios/app/bytebeat-make-music-with-code/id6811730170/reviews.md

## What is Bytebeat?

t*(42&t>>10)

That one line is the whole song.

Bytebeat turns a formula straight into sound. It evaluates your expression while t counts up from zero, one step at a time, and writes the result out as the waveform. No synthesizer, no audio files, no samples. The formula is the music.

■ Edit while it plays
- Rewrite the formula without stopping playback. t keeps running
- Change a single character and the song becomes something else
- A keypad holding only the characters that appear in bytebeat formulas, so one tap is one character

■ See the waveform
- An oscilloscope draws the samples that are actually playing
- Traces are aligned to the rising edge, so the wave stays still instead of scrolling
- Instruction count and stack depth are shown too

■ 29 famous formulas
- Includes the one-liners from the experiments viznut published in 2011
- Save the ones you like to favorites with your own names

■ Three modes
- Bytebeat: result & 255 mapped to 0...255, the way the original sounded
- Signed: treated as signed 8-bit
- Floatbeat: the result used directly as a -1...1 waveform, where sin and cos come alive

■ Change the speed of t
- 500 to 48000 Hz. The original bytebeat ran at 8000 Hz
- Slower runs lower, faster runs higher

■ Export to WAV
- 8-bit, 8000 Hz, mono, which is exactly what bytebeat is
- 10 seconds, 30 seconds, 1 minute or 3 minutes

■ What you can write
- The variable t, and the constants PI and E
- Arithmetic, bitwise operators, shifts, comparison, logic, the ternary operator
- sin cos tan asin acos atan abs floor ceil round sqrt exp log sign int pow min max atan2 mod
- Everything is computed in Double and rounded to 32-bit integers only for bitwise operations and shifts. This matches JavaScript's ToInt32, so formulas you find on the web play as they are

■ No connection
- No account to create
- No ads, no tracking
- The app never connects to the internet. It works on a plane

Many of the presets come from the experiments Ville-Matias Heikkila (viznut) published in 2011.


## Version history (last 1 release)

### 1.0 — 2026-09-29

No release notes.

## More apps by Ryo Tsudukihashi

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- [WidgetQiita](https://appshunter.io/ios/app/widgetqiita/id1585253685)
- [WidgetZenn](https://appshunter.io/ios/app/widgetzenn/id1597103122)
- [Floating Notepad　-Overlay-](https://appshunter.io/ios/app/floating-notepad-overlay/id1598380826)
- [PIPMP](https://appshunter.io/ios/app/pipmp/id1612260255)

All apps by Ryo Tsudukihashi: https://appshunter.io/developer/1320583602

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-06.*