MINI-COMPOSER by Karl Bartos Downloads & RevenueMINI-COMPOSER by Karl Bartos · App Store
Not in any tracked top chart right now.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperMasayuki Akamatsu
CategoryMusic
PriceFree
Released
Rating★ 4.0 (12)
Version1.2.4
Age rating4+
First seen by us
23 Oct 2026
23 Oct 2026MINI-COMPOSER by Karl Bartos update history & changes
Last change · 3 events since 26 Mar 2011Full timeline ↓Full timeline · 3 events
- 🆕MINI-COMPOSER by Karl Bartos first spotted by AppInsiderJapan (found via developer)
- 📦MINI-COMPOSER by Karl Bartos version 1.2.4Minor improvements.
- 🆕MINI-COMPOSER by Karl Bartos released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.0 ★
12 ratings
Measured
MINI-COMPOSER by Karl Bartos on the App Store
App details
App ID
427541594
Publisher
正行 Akamatsu
On the store since
Mar 2011
15 years on the store
Minimum OS
iOS 12.0+
iPhone 5s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
17 MB
Also listed in
Entertainment
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.0 ★
12 ratings
Measured
Ratings
12
Measured
About MINI-COMPOSER by Karl Bartos
Karl Bartos (electronic musician, ex-KW, co-composer of songs like The Robots, The Model, Computer World,...) and Masayuki Akamatsu (media artist and author of various iPhone apps such as Banner, Oscillator, Echochops,...) create a 16 step music sequencer which is free, simple and fun. The executive producer is Jean-Marc Lederman.
We have created this simple music app for fun: it implements the basic waves of a synthesizer with a 16 step sequencer. This app is completely free, but we would be glad if you would consider a donation to the Red Cross. In 2011, the year we were making this app, the Great East Japan Earthquake struck, and we released it as donationware to support the people affected. The damage from that disaster has still not fully healed, and disasters have continued to occur around the world since then. We continue to ask for your support.
This application has the functions listed below.
- 16 steps sequencer
- Start/stop sequence
- Multi-touch note input
- 32 polyphonic tones + 1 drum track
- 4 waves (saw, triangular, square, sine)
- 4 drumbeat loops
- Drums on/off
- Random notes
- Clear notes
- Additional information
Please enjoy our music and think World.
We have created this simple music app for fun: it implements the basic waves of a synthesizer with a 16 step sequencer. This app is completely free, but we would be glad if you would consider a donation to the Red Cross. In 2011, the year we were making this app, the Great East Japan Earthquake struck, and we released it as donationware to support the people affected. The damage from that disaster has still not fully healed, and disasters have continued to occur around the world since then. We continue to ask for your support.
This application has the functions listed below.
- 16 steps sequencer
- Start/stop sequence
- Multi-touch note input
- 32 polyphonic tones + 1 drum track
- 4 waves (saw, triangular, square, sine)
- 4 drumbeat loops
- Drums on/off
- Random notes
- Clear notes
- Additional information
Please enjoy our music and think World.
Latest updates
1.2.4
Minor improvements.
