# C.ARP — super music maker

> Intuitive mobile music creation tool with vintage keyboard inspiration and real-time effects. (iPhone/iPad app by Paolo Giorgi.)

- Source: https://appshunter.io/ios/app/carp/id1481916004 (this page in markdown: same URL + `.md`)
- Developer: [Paolo Giorgi](https://appshunter.io/developer/1481916003)
- Category: Music, Entertainment
- Price: $9.99
- Rating: 4.30/5 from 110 App Store ratings · 111 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 45 MB
- Languages: American English
- Released: 2019-10-20
- Data updated: 2026-09-02
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/carp/id1481916004/reviews.md

## What is C.ARP?

C.ARP is a totally different keyboard. Inspired by old keyboards, omnichords and tape effects, it lets you play chords and melodies as well. Its design makes everything easier for a musician who just wants to play on mobile. Just hold on a button and then swipe or tap on the right section. But if you prefer, you can access chords and notes directly on the notes grid. Pitch them, harmonize, use mod wheel and apply real-time audio effects too. Rhythm section follows you every chord you choose: pick up the style you prefer, adjust BPMs, mute other instrument, change different midi settings, change drums and play them with drum pads. Do arpeggios with different sounds and rhythmic fractions, create different sound environments with delay, reverb and rotation. The design has also been updated for iPads, so you can enjoy the buttons and sections rearranged for the screen size. Record your voice or everything else as a sample, adjust its length, reverse or loop it, make chords and melodies with it and explore other cool features on this 4th version. There's also a tutorial inside!

And finally: we added bluetooth out. It means you can connect your iPhone to your Mac and send midi notes right in your preferred DAW. Just follow the guide inside.

Thanks to everyone who helped me: Giacomo, Virginia, Mattia, Andrea, Giulia, Cristiano, and the others.
Thanks to the masters Suriani, Frankie and Calcutta.

For every question or suggestion don't hesitate to write to me

## Key features

- Chord and melody playing
- Real-time audio effects
- Dynamic rhythm section
- Sampling and looping
- MIDI output via Bluetooth
- iPad optimized interface
- In-app tutorial

## Chart rankings

- #177 in Top Paid · Music (US App Store)

## What do users think of C.ARP?

Overall sentiment: mixed

**Pros**

- 🎶 Authentic omnichord sound
- 💡 Great for learning music theory
- 🤩 Fun and enjoyable to use
- 📱 Accessible on mobile devices
- 💰 Affordable alternative to real omnichord
- 🎨 Visually appealing design
- 👍 Intuitive interface
- 🎁 Good for gifting

**Cons**

- 🔊 No sound issue
- 💥 Frequent crashes
- 🤔 Confusing interface/menus
- 🐌 Slow UI responsiveness
- 🎚️ Limited sound design options
- 🎚️ Stale internal sounds
- 🎚️ MIDI Send broken
- 🎚️ Can't close menus
- 🎚️ Chord not triggering consistently
- 🎚️ Latency issues
- 🎚️ Strumming area feels small
- 🎚️ Sound can be tinny/harsh

**Commonly reported bugs**

- Sound doesn't work
- No sound
- App crashes when opening
- App crashes when trying to open
- App auto-quits on start
- Chord panel smaller after update
- System setting always out
- App crashes after using only once
- App crashes when pressing a button
- MIDI Send is broken
- Can't open the app on Mac
- Can't close the menu
- App crashes if sample button is pressed
- Sample button crashes the app
- Strumming doesn't work
- App crashes when sample or reverse is pressed
- App is not stable / crashy
- Sampling function is DOA
- Sampler doesn't work / crashes
- Crash problem
- Send midi function greyed out
- App crashes when pressing the red sample button
- Sampler crashes the app 100%
- App crashes when attempting to use record feature
- Sample button keeps crashing the app
- Record, loop, or reverse buttons cause crash
- Bugs related to recording/sampling
- Sampler may crash
- Audio panel covers gear button
- E chord is extremely low octave and sounds muddled
- App crashes when trying to start an audio recording
- Certain audio glitches with recording and looping
- Buttons crash the app
- App crashes when pressing the sample button
- Sample and reverse buttons crash the app
- MIDI out doesn't seem to work
- Latency is a killer
- Chord doesn't trigger if not hit perfectly
- Sliding finger doesn't sound chord
- Sound can be tinny/harsh

**Most requested features**

- Rearrange layout to be chromatic
- AUV3 support
- Inter-app-audio / GarageBand integration
- MIDI out functionality
- Save last state
- Contextual help menus
- More sound design options
- Make it an Auv3 midi controller
- Support iPad
- Add "midi out" option
- Make it an audio app extension for GarageBand
- Add a way to use this app as a Bluetooth midi controller
- Add a visual distinction for individual buttons
- Add velocity on the strum bar
- Allow autoplay chord to hold like a drone
- Transpose reverb of strummed notes
- Add midi connectivity with external devices and other apps
- Add custom colors for themes

## Recent user reviews (10 of 111)

All indexed reviews: https://appshunter.io/ios/app/carp/id1481916004/reviews.md

### 5/5 — It was good!

*2026-07-30, version 4.72*

Yall should make the keyboard longer

### 4/5 — Love the app

*2026-06-15, version 4.64*

Congratulations on version 4 of this amazing app. One of a kind. Is there any foreseen update for the addition of AUV3?

### 5/5 — Rad and awesome

*2026-06-04, version 4.62*

^

### 5/5 — Amazing

*2026-06-03, version 4.62*

11/10

### 5/5 — Amazing Omnichord clone

*2026-05-22, version 4.62*

Works great!

### 5/5 — Wonderful

*2026-05-15, version 4.62*

This app is going to be the closeted thing I get to owning a omnichord. All of the sounds on it sound just like the real thing

### 5/5 — I really enjoy this app

*2026-05-08, version 4.62*

I really enjoy this app! It works great and it’s a lot of fun :)

### 5/5 — Great for audio professionals, omnichord enthusiasts, tinkerers, and everyone in between.

*2026-05-05, version 4.62*

I love that classic omnichord sound, and I love how fun it is to noodle around with this app. As a music hobbyist, this has been extremely helpful in dissecting and learnjng chord progressions, following along easily with guitar/piano tabs, and writing my own music. All on the go during my daily commute. Can’t recommend enough, have also bought as a gift!

### 5/5 — Great

*2026-04-25, version 4.62*

Im only writing this review so it leaves me alone while i play. Needless to say, i am enjoying myself. The tutorial is really helpful, just a protip

### 1/5 — Soundwise

*2026-04-09, version 4.62*

The sound doesn't work

## Frequently asked questions about C.ARP

### What is C.ARP?

C.ARP is a mobile music creation application inspired by vintage keyboards and omnichords. It provides an intuitive interface for playing chords and melodies, applying real-time audio effects, and utilizing a dynamic rhythm section. The app also includes sampling capabilities and MIDI output.

### What are the key features of C.ARP?

Key features include an easy-to-use chord and melody playing system, real-time audio effects like delay and reverb, a customizable rhythm section with drum pads, the ability to record and manipulate samples, and Bluetooth MIDI output for connecting to DAWs. It also offers an in-app tutorial.

### How much does C.ARP cost?

Based on the provided information, C.ARP is available for free and does not feature in-app purchases or advertisements. This allows users to access all its functionalities without any cost.

### What devices is C.ARP compatible with?

The app is designed for mobile use and has an interface updated for iPads, meaning it can be enjoyed on both iPhones and iPads. It also supports Bluetooth MIDI output, allowing connection to Macs for use with Digital Audio Workstations (DAWs).

### What are common use cases for C.ARP?

Common use cases include composing music on the go, experimenting with chord progressions and melodies, creating unique soundscapes with real-time effects, and using it as a portable MIDI controller for more advanced music production setups. It's suitable for both beginners and experienced musicians.

## Version history (last 5 releases)

### 4.72 — 2026-07-28

rerouted the audio effects chain for better performances and audio quality overall.
added in-app audio sampleRate change: 48, 44.1, 22.05 kHz.
some other minor bug fixes.

### 4.65 — 2026-06-24

some users experienced some crashes on iOS 17.x 
we patched that. however, for those devices running 
that version, we do not guarantee the correct working of 
the midi-over-bluetooth feature, based on some os' restrictions.
we also patched a bug we found on the sequencer.
thanks.

### 4.64 — 2026-06-14

patch and ui fix

### 4.63 — 2026-06-14

BUG FIXES, UI IMPROVEMENTS :)

### 4.62 — 2026-01-05

!! HUUUGE UPDATES in this version !!

- BLUETOOTH MIDI OUT. YES you heard that right. 
(for now it has been tested on iPhones not iPads - we're working on that too)
- iPad has now ITS OWN layout, finally
- you can now arpeggiate your own note sequences, using single note arpeggios.
- pitch bend fixes
- now you can trim sampled audio from both sides
- change chords order (as someone asked for :)  )
- other general bug fixes.

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## More apps by Paolo Giorgi

- [M.ETRO](https://appshunter.io/ios/app/metro/id1543955749)
- [C.HOP](https://appshunter.io/ios/app/chop/id1545248253)
- [Cromalog](https://appshunter.io/ios/app/cromalog/id6742232999)
- [T.APE](https://appshunter.io/ios/app/tape/id6747094646)
- [G.UITAR](https://appshunter.io/ios/app/guitar/id6747679212)

All apps by Paolo Giorgi: https://appshunter.io/developer/1481916003

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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 2026-09-02.*