Comparison

Holon vs ddtctmcc

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

Head to head
About

Holon

This app transforms your movement through cities into a dynamic, real-time musical score. It uses your physical location and activity to generate interactive synth music, encouraging outdoor exploration and turning listeners into performers.

Highlights
  • Human-powered music generation
  • Encourages outdoor activity
  • Zero UI for minimal distraction
  • Environmentally responsive music
  • Real-time synth music creation
  • Optional AirPods and Apple Watch integration
Features
Read full description

Holon makes the city your instrument. It turns your movement in the environment into a synthetic, interactive score that reflects your context, supports your activities and alerts you to changes in the surrounding area. Holon uses physical computing and a geospatial dataset to synthesize music on the iPhone in real time from your data - no streaming or AI involved, just pure DSP and logic. What Holon Does: * Human powered music. Every action generates dynamic, improvised synth music in real time. * Encourages outdoor activities. Holon doesn’t work in your apartment or by shaking your phone around. Move through streets, parks, and transit systems to make the music happen. * Stays out of your way. Zero UI means less screen time, no distractions. * Uses places and spaces to modify the music you make. The environment isn’t background - it’s the score. * The more and further you move, the more things happen in the music. Use your musical agency instead of skipping and swiping. Why Holon Exists:
 Music has been reduced to a commodity and a background activity for consumerism. Holon isn’t here to help you chill when you swipe, scroll and buy more stuff, or improve your focus when working for the Man. Holon is here to break away from the static, one-way relationship of streaming services and to put the human in the loop - yourself. Forget emoting celebrities with their false sincerity, throw overproduced passive soundscapes and statistical algorithms on the dung heap of history. Holon turns listeners into performers and unlocks the musical potential of places. How to Use: * Go outside - Holon needs space to function, just like you. Different districts, parks, bridges, shops, street furniture - all contribute to the musical output. Strolling around your apartment or shaking your phone won’t do. * Put the phone in your pocket or on your dashboard. * Walk, run, drive - the world is now the interface, space is the machine. * Use the big button in the middle to power Holon off when not in use - Auditory AR can be a battery-intensive process! * Optional Apple AirPods support for head-controlled musical interactions! * Optional Apple Watch support for heart rate-synced music (biofeedback) *the Watch app may take a moment to install* Requirements:
 * Available in over 1000 regions in more than 100 countries. * Check coverage or request a new area at holonic.systems/holon. * Best experienced with headphones. Ensure adequate battery level for extended use. * A data plan is required to access our geospatial engine but use of data is low. Holon: Become part of the circuit and… Become Sound™

About

ddtctmcc

This free music app translates touch gestures into MIDI Control Change messages. It offers a 2D touch area to control three MIDI values and two gesture recording modes: infinite looping or one-time playback triggered by buttons.

Highlights
  • 2D touch area for MIDI control
  • X, Y, and Touch On/Off MIDI values
  • Looping gesture recording
  • One-time gesture playback
  • Background operation
  • AUv3 support
Features
Read full description

ddtctmcc-ff "2D Touch Control To MIDI Control Change - For Free" This is a free compact version of "ddtctmcc" touch control app that is designed to work with touch gestures and output MIDI Control Change messages. This app is available as standalone version that can run in background and as an AUv3. It features: - 2D Touch Area where you can set 3 MIDI values (X, Y and Touch On / Off) that will be sent as MIDI CC messages - Two gesture recording modes: "Loop" and "Once": -- In "Loop" mode the gesture is immediately repeated infinitely. You can restart it and change the direction of gesture loop -- In "Once" mode the gesture is recorded silently and only played back later when "trigger" or "+pause" buttons are pressed.

Screenshots

Holon4 screens
ddtctmcc3 screens

Verdict

The call

The clearest difference is rating: ddtctmcc at 5.0 against Holon's 4.5. ddtctmcc also leads on in-app purchases (none vs 2) and update cadence (daily vs every 3 months). On price, review sentiment, ratings volume and ads 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. Holon sells 2 one-off in-app purchases. ddtctmcc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ddtctmcc holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 14 and 7 respectively. Written reviews point the same way: 75% of Holon's written reviews are positive against 80% of ddtctmcc's.

UpkeepUpdate frequency

Holon ships an update every 3 months, ddtctmcc daily. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively.

Scorecard5 real differences · 5 level
Holon versus ddtctmcc: the parameters behind the verdict, then further details
ParameterHolonddtctmcc
PriceFreeFree
Rating4.5 (14 ratings)5.0 (7 ratings) — better
Positive reviews75.0% of reviews80.0% of reviews — better
Number of ratings14 — better7
Update frequencyEvery 3 monthsDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS12.09.0 — better
Further details — not scored
Size144 MB6 MB
Age rating4+4+
DeveloperHolonic Systems OyAlexey Nadzharov

Customer experience

Holon

All ratings14 ratings
Positive85.7%
Neutral7.1%
Negative7.1%
Written reviews12 reviews
Positive75.0%
Neutral8.3%
Negative16.7%

ddtctmcc

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

2 purchases

Holon

One-time2
  • Apple Watch supportFree
  • Movesense SupportFree
None

ddtctmcc

No in-app purchases

Questions

Is Holon free?
Holon is free to download, with in-app purchases available.
Is ddtctmcc free?
ddtctmcc is free to download, with no in-app purchases.
Which has better reviews, Holon or ddtctmcc?
ddtctmcc is rated higher. Holon averages 4.5 out of 5 from 14 ratings, while ddtctmcc averages 5.0 from 7 ratings.
Do Holon or ddtctmcc have ads?
Neither Holon nor ddtctmcc shows ads.
Which is updated more often, Holon or ddtctmcc?
Holon ships an update every 3 months, and ddtctmcc daily. Most recently, Holon was updated on October 3, 2026 and ddtctmcc on October 2, 2026.

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