Comparison

CalmusNotation vs World Controller

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CalmusNotation

Create and visualize musical compositions using AI-powered graphical notation. This app leverages advanced AI, inspired by NASA's Lisp programming, to generate original music based on user input and can display music from other compatible apps for live performance.

Highlights
  • AI-powered music composition
  • Graphical notation display
  • Real-time performance visualization
  • Lisp-based AI engine
  • User input-driven music creation
  • Integration with CalmusComposer and CalmusPlay
Read full description

Graphical Notation is an app for music creation and graphical notation using Artificial Intelligence. The coreof Graphical Notation is the CalmusAI brain where the modern composing methods are programmed into the brain using Lisp programming language. NASA has historically used Lisp for artificial intelligence and autonomous systems, most notably in the 1990s Remote Agent project, the first AI system to control a spacecraft. CalmusNotation does not collect or use any musical material from the internet but creates new music based on the input from the user. In addition - CalmusNotation can also receive composed music from CalmusComposer and CalmusPlay - and present the music as graphical notation for live performance - in real-time. CalmusComposer composes music with Artificial Intelligence and can send the musical result to GraphicalNotations to be presented for life performance. CalmusComposer is connected to GraphicalNotation through WiFi local network - by selecting CalmusNotation in Settings. GraphicalNotation is connected to CalmusComposer, through WiFi local network - by selecting the MacOS device in the settings of GraphicalNotation. CalmusNotation needs Internet connection.

About

World Controller

Features
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World Controller was written to solve a particular problem I encountered in live performance. I needed a way to choose a Digital Performer chunk simultaneously on multiple computers, AND select a corresponding MainStage patch to play live parts against a track. Specifically, World Controller uses a wireless network MIDI session to control Digital Performer and MainStage at the same time. Any Mac Laptop on the same wifi network that subscribes to the wireless MIDI session (set up in Audio MIDI Setup) can respond to commands sent from World Controller, perfect for simultaneous control of multiple computers in a redundant playback situation. You can create a set list that can be edited and re-ordered any way you like. Each set list item provides a button to select a particular Digital Performer chunk, and another button to select a MainStage patch. There are also transport controls for Digital Performer playback as well (sent as Patch change commands to the DP Remote Commands), allowing you to start, stop and rewind the current chunk to zero. This app is optimized for use with these two pieces of software, and it is the missing link for me that enables seamless playback in a complex live performance situation. More features will come in subsequent versions, but right now, all the commands sent wirelessly are patch change commands on channels 15 and 16 (MainStage and DP respectively). Any musician on stage can now run the app and be connected via peer to peer networking to get live updates of the set list. Everybody see the same list and sees what song is cued up to be played next. There's nothing else out there that does this one specific thing!

Screenshots

CalmusNotation4 screens
World Controller1 screens

Verdict

The call

The clearest difference is iOS requirement: World Controller at 12 against CalmusNotation's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CalmusNotation ships an update every 4 months, World Controller every 6 months. The most recent releases landed on June 5, 2026 and September 15, 2026 respectively.

Scorecard1 real difference · 9 level
CalmusNotation versus World Controller: the parameters behind the verdict, then further details
ParameterCalmusNotationWorld Controller
PriceFreeFree
Rating4.4 (5 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 4 months — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.612 — better
Further details — not scored
Size294 MB7 MB
Age rating4+4+
DeveloperErki-tonlist sfVandalay Industries

In-app purchases

None

CalmusNotation

No in-app purchases

None

World Controller

No in-app purchases

Questions

Is CalmusNotation free?
CalmusNotation is free to download, with no in-app purchases.
Is World Controller free?
World Controller is free to download, with no in-app purchases.
Do CalmusNotation or World Controller have ads?
Neither CalmusNotation nor World Controller shows ads.
Which is updated more often, CalmusNotation or World Controller?
CalmusNotation ships an update every 4 months, and World Controller every 6 months. Most recently, CalmusNotation was updated on June 5, 2026 and World Controller on September 15, 2026.

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