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C.ARP

by Paolo Giorgi

  • Music
  • Paid
View on the App Store
Rating
4.3
115 ratings · US storefront
Top 91%among 137 Music apps
Last update
Oct 16, 2026
Version 4.74
Size
48 MB
Category
Music
Tracked since
Oct 9, 2026

Estimated revenue

A model estimate with a likely range, not a reported figure.

No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.

How this estimate is made

Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.

Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.

Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.

Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.

Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.

Full method

Screenshots

As shown on the App Store listing.

About this app

Text from the App Store listing.

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

What’s new

Release notes for the latest version, as written by the developer.

v4.74
Original · root

bug fixes + improved volume of WALTZ section

Rank history

Daily position in the Luxembourg charts. #1 is at the top.

Best rank
#6
Current rank
#9
Days charting
3 of 7

On the charts today

Small & simple score

How realistic it is for a small team to build something like this.

75/100

Not flagged as small & simple

  • Developer size10% · 25

    Developer: 4 apps on the charts

  • Audience size100% · 20

    Ratings: 115

  • App size100% · 10

    Size: 48 MB

  • Price model100% · 15

    Price model: paid

  • Demand proof90% · 30

    Best rank #5, 9 countries

An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2

How the score works

Version history

  • 4.74LatestReleased Oct 16, 2026
  • 4.72Released Jul 28, 2026