Comparison

Holon vs Calmus Remote

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

Calmus Remote

Create original, royalty-free music using AI and your input. Ideal for film, TV, games, or personal projects. Record audio output directly through the control center.

Highlights
  • AI-powered music composition
  • Royalty-free music generation
  • Input-based music creation
  • Music for media and personal use
  • Direct audio recording
Read full description

Calmus Remote composes original and Royalty-free music based on human input and the use of Artificial Intelligence - Music for movies, TV shows or Games .... and for personal use. The core of Calmus Remote 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. CalmusRemote does not collect or use any musical material from the internet but creates new music based on the input from the user. To record audio output - go to Control Center and press RECORD

Screenshots

Holon4 screens
Calmus Remote1 screens

Verdict

The call

The clearest difference is review sentiment: Holon at 75% against Calmus Remote's 30%. Holon also leads on price (Free vs $1.99) and rating (4.5 vs 4.0). Calmus Remote's advantage is in-app purchases (none vs 2). On ratings volume, update cadence, ads and monetization model 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

Holon is free to download; Calmus Remote costs $1.99 up front. Holon sells 2 one-off in-app purchases. Calmus Remote asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Holon holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 14 and 6 respectively. Written reviews point the same way: 75% of Holon's written reviews are positive against 30% of Calmus Remote's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

Scorecard5 real differences · 5 level
Holon versus Calmus Remote: the parameters behind the verdict, then further details
ParameterHolonCalmus Remote
PriceFree — better$1.99
Rating4.5 (14 ratings) — better4.0 (6 ratings)
Positive reviews75.0% of reviews — better30.0% of reviews
Number of ratings14 — better6
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
DevicesiPhone, iPad, iPod, Apple WatchiPhone, iPad, iPod, Mac
Requires iOS12.0 — better15.6
Further details — not scored
Size144 MB287 MB
Age rating4+4+
DeveloperHolonic Systems OyErki-tonlist sf

Customer experience

Holon

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

Calmus Remote

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews10 reviews
Positive30.0%
Neutral0.0%
Negative70.0%

In-app purchases

2 purchases

Holon

One-time2
  • Apple Watch supportFree
  • Movesense SupportFree
None

Calmus Remote

No in-app purchases

Questions

Is Holon free?
Holon is free to download, with in-app purchases available.
Is Calmus Remote free?
Calmus Remote costs $1.99, with no in-app purchases.
Which has better reviews, Holon or Calmus Remote?
Holon is rated higher. Holon averages 4.5 out of 5 from 14 ratings, while Calmus Remote averages 4.0 from 6 ratings.
Do Holon or Calmus Remote have ads?
Neither Holon nor Calmus Remote shows ads.
Which is updated more often, Holon or Calmus Remote?
Holon ships an update every 3 months, and Calmus Remote every 3 months. Most recently, Holon was updated on November 2, 2026 and Calmus Remote on November 6, 2026.

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