Report updated Apr 28, 2026
![SOLO [Nr.19] icon](/_next/image?url=https%3A%2F%2Fis1-ssl.mzstatic.com%2Fimage%2Fthumb%2FPurple125%2Fv4%2F73%2F9d%2F03%2F739d03fc-2db6-4da9-d99d-c7da4c99aa81%2FAppIcon-0-0-1x_U007emarketing-0-0-0-7-0-0-sRGB-0-0-0-GLES2_U002c0-512MB-85-220-0-0.png%2F512x512bb.jpg&w=3840&q=75)
SOLO [Nr.19]
For professional musicians and students performing Stockhausen’s Solo für melodieninstrument mit rückkopplung.
![SOLO [Nr.19] screenshot](/_next/image?url=https%3A%2F%2Fis1-ssl.mzstatic.com%2Fimage%2Fthumb%2FPurple123%2Fv4%2F87%2Fd2%2Fea%2F87d2ea1f-2cde-7498-1f1f-758d9233f5ba%2Fmzl.lcfxajce.png%2F406x228bb.png&w=3840&q=75)
![SOLO [Nr.19] screenshot](/_next/image?url=https%3A%2F%2Fis1-ssl.mzstatic.com%2Fimage%2Fthumb%2FPurple123%2Fv4%2Fc3%2F19%2F2b%2Fc3192b09-78a8-9688-dda0-6ea3594c626d%2Fmzl.utykvfwj.png%2F406x228bb.png&w=3840&q=75)
![SOLO [Nr.19] screenshot](/_next/image?url=https%3A%2F%2Fis1-ssl.mzstatic.com%2Fimage%2Fthumb%2FPurple113%2Fv4%2Fb7%2Faf%2F0c%2Fb7af0cb9-c0d2-bd8c-70b2-a11931f7fdf8%2Fmzl.vffgbgwh.png%2F406x228bb.png&w=3840&q=75)
Overview · Full Intel report in progress
SOLO [Nr.19] is an established music app that is completely free. With a 4.4/5 rating from 7 reviews, it shows polarized user reception.
What is SOLO [Nr.19]?
Current Momentum
v2.2 · 55mo ago
ZombieLast updated 1667d ago. 5 versions tracked.
Competition
Rivals identification in progress
7-Day Rank Pulse 🇺🇸
MusicNo ranking data
Rating Pulse 🇺🇸
What makes this app unique?
What Does It Look Like?
What Are The Key Features?
Replicates the original analog feedback setup required to create polyphonic music from a single melodic instrument.
Digitally performs the work of four technicians across all six versions of the composition.
Provides high-quality performance examples by Enrico Francioni on contrabass and Simonetta Sargenti on violin.
How much does it cost?
Who Built It?
apeSoft
Providing professional-grade sound design and modular synthesis tools for mobile musicians. Enabling complex audio routing and vintage hardware emulation on iOS.
Portfolio
12
Apps
What other apps does apeSoft make?
Explore the full apeSoft report
Portfolio breakdown, audience, momentum, and every app published by apeSoft.
Analysis in progress, available soon
What do users think recently?
Analysis in progress, available soon
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
Analysis in progress, available soon
What is the competitive landscape for SOLO [Nr.19]?
How's The Music Market?
Market outlook for this category
Available very soon
Strategic analysis coming soon
SWOT, key takeaways & outlook
The outtake for SOLO [Nr.19]
Key Takeaways
This is a specialized utility designed exclusively for musicians performing Stockhausen’s Nr.19, replacing the need for a traditional four-person technical crew.
Where Is It Heading?
Trend analysis
Available very soon