# Firo4 — Music Maker & Audio Sketchpad

> Mobile music creation tool with instrument, drum kit, looper, and recording features. (iPhone/iPad app by Makefast Workshop Ltd.)

- Source: https://appshunter.io/ios/app/firo4/id1499866757 (this page in markdown: same URL + `.md`)
- Developer: [Makefast Workshop Ltd](https://appshunter.io/developer/1499866756)
- Category: Music, Education
- Price: Free (on sale, was $0.99)
- Rating: 4.94/5 from 33 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 37 MB
- Languages: English
- Released: 2020-02-21
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/firo4/id1499866757/reviews.md

## What is Firo4?

Firo4 is a cutting-edge musical instrument, drum kit, chord builder, and multi-channel looper; all seamlessly designed for maximum playability. Create new music like never before with an instrument that's built to help you turn your song ideas into reality.

• Music first •
Designed from the ground up to help you focus on what you’re creating. Reinvented piano layout extends your expressive potential. Supports 10-finger multitouch and seamless use; keep playing even while adjusting parameters.

• Play your heart out •
Choose from 12 instruments, all optimized for high quality playback. Select from four drum modes with both analog and electronic samples. Add filter and reverb effects to shape your sound.

• Informed by theory •
Choose any key in 7 diatonic modes and 7 secondary scales (Pentatonic, Blues, Whole-tone, etc.) to facilitate stylistic riffs and melodies. Intuitively learn relationships between notes and chords as you play.

• Chords with context •
Quickly build complex harmonies with a single touch; push-button chords adjust to include triads, 6, 7, 9, sus2, sus4 and modulation chords while also informing the chorded zither/autoharp.

• Intuitive looping •
Five auto-expanding, synchronized loopers offer layering, contextual sizing, replay, and simple undo/redo via press-and-hold. Tempo control and beat quantization let you easily align looped sequences on the fly.

• See what you sing •
Visual pitch detection allows you to sing what's in your head and see which corresponding notes light up on the keyboard.

• Record your session •
Record up to 90 minutes of live session audio as you play — then output as both a stereo M4A file (clean output and vocal/mic input) and multi-channel MIDI file.

• Share with the world •
Share your audio recordings with other iOS apps and save files to your computer when you sync your device.

• Connect with other apps •
Send realtime audio directly to other iOS apps via Audiobus and Inter-App Audio. Output MIDI to control other iOS synthesizers or to desktop synths and workstations via WiFi / Bluetooth.

Firo4 is the latest version of Firo (short for Fiddlewax Pro, first released in 2014). Since its humble beginnings, Firo has been downloaded hundreds of thousands of times. We hope you'll give it a try and let us know what you think.

## Key features

- Multi-channel looper
- 12 high-quality instruments
- Four drum modes
- Diatonic and secondary scales
- One-touch chord building
- Visual pitch detection
- Audio and MIDI recording

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/firo4/id1499866757/reviews.md

### 5/5 — So happy it is back!

*2020-12-06, version 4.0.4*

Question though. Is there any way to use this app to replay old recordings from Fiddlewax?

Cheers!

### 5/5 — Wow

*2020-11-29, version 4.0.4*

Just found this app. As a songwriter, this has blown open my horizons. Thanks for making this!

### 5/5 — It’s Alive!

*2020-02-27, version 4.0.3*

Glad to eee the app back in the store; missed it when it was away. Really useful for getting down ideas. 

My wish list:
* save as AIFF
* load samples from Audioshare or Files
* iCloud Drive support between iPhone and iPad versions 
* Support for auv3 apps

Thanks for bringing it back!

### 5/5 — Golden

*2020-02-25, version 4.0.3*

This guy updates

### 4/5 — Great music app but doesn’t work with AIRPODS

*2020-02-22, version 4.0*

It’s sold with all the chords right there for you but I wish that I could use my AirPods Pros with this app.

**Developer response:** Firo4 is a realtime music creation app and the delay/latency from bluetooth means that beats will lag when inputing new rhythms/notes. The fastest AirPods (AirPods Pro) claim 144msec delay, which at a moderate 120bpm tempo is still more than a 1/4 beat out of sync. 

We'll keep looking for ways to get around the limitations of bluetooth, but for now, the lag from the bluetooth connection make them non-ideal for realtime instruments. Hopefully you can enjoy making music in Firo4 without AirPods until then (connected headphones work great)!

## Frequently asked questions about Firo4

### What is Firo4?

Firo4 is a mobile application designed for music creation. It functions as a musical instrument, drum kit, chord builder, and multi-channel looper, allowing users to compose and record music directly on their devices.

### What instruments are available in Firo4?

Firo4 offers a selection of 12 instruments, all optimized for high-quality playback. It also includes four drum modes with both analog and electronic samples.

### Can I use Firo4 offline?

The provided description does not specify offline functionality. However, features like sharing audio recordings and connecting with other apps via Audiobus and Inter-App Audio suggest an internet connection may be required for some functions.

### How does Firo4 handle chord creation?

Firo4 allows users to quickly build complex harmonies with a single touch. Its push-button chords adapt to include various triad, 6, 7, 9, sus2, sus4, and modulation chords.

### What are the recording capabilities of Firo4?

Users can record up to 90 minutes of live session audio. The app can output recordings as stereo M4A files (including vocal/mic input) and multi-channel MIDI files.

### How does Firo4 compare to other music creation apps?

Firo4 distinguishes itself with its music-first design, reinvented piano layout for expressive potential, and intuitive chord building. It also offers visual pitch detection to help users see notes corresponding to their singing.

### Is Firo4 suitable for beginners?

Firo4 is designed for maximum playability and aims to help users turn song ideas into reality. Its intuitive features like one-touch chord building and visual pitch detection can be beneficial for beginners learning music theory and composition.

### What devices does Firo4 support?

Firo4 is available for iPhone, iPad, and iPod touch devices, as indicated by its supported devices list.

## Version history (last 1 release)

### 4.0.4 — 2020-02-28

Improve beat alignment, audio quality, and user interface.

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## More apps by Makefast Workshop Ltd

- [Firo4 CE - Classroom Edition](https://appshunter.io/ios/app/firo4-ce-classroom-edition/id1509042974)

All apps by Makefast Workshop Ltd: https://appshunter.io/developer/1499866756

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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 2026-06-10.*