Decibel ScorePlayer vs Holon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Decibel ScorePlayer
This app synchronizes music scores across multiple iPads for network-based scrolling. It's ideal for reading graphic notation during rehearsals and performances, offering features like adjustable scroll speed and section navigation.
- Network-synchronized scrolling scores
- Proportional color music notation
- Adjustable scroll speed
- Section navigation slider
- Full score or individual part view
- Wi-Fi network compatibility
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ScorePlayer allows for network-synchronised scrolling of proportional colour music scores on multiple iPads. This is designed to facilitate the reading of scores featuring predominantly graphic notation in rehearsal and performance. Key Features: Comes with four built in scores, created by composers in Decibel new music ensemble, Cat Hope and Lindsay Vickery. Ability to change scroll speed of the piece. Easy to use slider to navigate to different sections of the piece for rehearsal purposes. View full score or individual parts. Works across any wi-fi connection. Easy network check to verify which devices are on the network. Modular structure enables easy updates, with more scores to come. Upload facilities are planned in future releases.
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.
- 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
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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™
Screenshots
Verdict
The clearest difference is review sentiment: Holon at 75% against Decibel ScorePlayer's 0%. Holon also leads on price (Free vs $2.99) and rating (4.5 vs 4.0). Decibel ScorePlayer's advantage is in-app purchases (none vs 2) and update cadence (every 6 weeks vs every 3 months). On 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
Holon is free to download; Decibel ScorePlayer costs $2.99 up front. Holon sells 2 one-off in-app purchases. Decibel ScorePlayer asks for nothing beyond the download.
Holon holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Holon has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Decibel ScorePlayer's written reviews are positive against 75% of Holon's.
Decibel ScorePlayer ships an update every 6 weeks, Holon every 3 months. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.
| Parameter | Decibel ScorePlayer | Holon |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.0 (2 ratings) | 4.5 (14 ratings) — better |
| Positive reviews | 0.0% of reviews | 75.0% of reviews — better |
| Number of ratings | 2 | 14 — better |
| Update frequency | Every 6 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Paid |
| Devices | iPad | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 114 MB | 144 MB |
| Age rating | 4+ | 4+ |
| Developer | Monash University | Holonic Systems Oy |
Customer experience
Decibel ScorePlayer
Holon
In-app purchases
Decibel ScorePlayer
No in-app purchases
Holon
- Apple Watch supportFree
- Movesense SupportFree









