Hearing Space vs MIDI World
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hearing Space
This experimental art application uses AI and machine vision to analyze images, inferring spatial depth and structure. It then transforms these spatial relationships into interactive soundscapes, allowing users to explore a non-human model of space through touch. The app treats your device as a perceptual instrument to reveal AI's internal logic.
- AI-based image analysis
- Machine vision for spatial inference
- Interactive sound generation
- Touch-based sonic exploration
- Perceptual instrument interface
- Artistic and exploratory experience
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Hearing Space-Time is an experimental art application that explores how artificial intelligence perceives space and transforms it into sound. Using machine vision, the app analyzes images to infer spatial depth and structure. These inferred spatial relationships are translated into sound, allowing users to interact with and listen to a non-human model of space. By touching different areas of an image, users activate sonic responses shaped by the machine’s interpretation rather than by visual representation alone. The app treats the mobile device as a perceptual instrument rather than a passive screen. Sound becomes a medium through which machine vision’s internal logic is revealed, inviting reflection on the relationship between human perception, algorithmic interpretation, and spatial understanding. Hearing Space-Time is designed as an artistic and exploratory experience. It does not aim to simulate reality, but to expose how artificial intelligence reconstructs and reorganizes the world through inference. AI-based image analysis using machine vision Interactive sound generation based on inferred spatial depth Touch-based exploration of image-derived sonic space A minimal, contemplative interface designed for artistic engagement
MIDI World
Transform device sensors and real-world data into MIDI control and musical notes. Create multitrack recordings, adjust performances with per-track controls, and export to any DAW. Connect environmental data to your music.
- Sensor-to-MIDI mapping
- Real-world data integration
- Multitrack recording
- Per-track performance controls
- Standard MIDI File export
- Optional audio export
- Preset and theme customization
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MIDIWorld turns sensors and live data into MIDI control and notes. Map accelerometer, gyroscope, compass, GPS, barometer, microphone level, touch, light, proximity, and device motion into your performances. Layer weather, air quality, tides, visibility, seismic activity, place density, and market or FX-style feeds where available. Record multitrack sessions, adjust each source with per-track controls, and preview what you captured. Export Standard MIDI Files to use in any DAW or hardware that accepts MIDI. Optional audio export is available where the app supports it. Presets help you start quickly — from motion and tilt to weather, urban, health-driven, and experimental setups. Themes keep the interface comfortable for studio or stage. Permissions (Motion, Microphone, Location — including background when your session needs it — Health, Bluetooth) are used only to drive MIDI and related features on your device, as described in the system prompts and in our Privacy Policy. Whether you are sonifying a ride, the forecast, or generative patches from your environment, MIDIWorld connects world data to music.
Screenshots
Verdict
The clearest difference is price: Hearing Space at Free against MIDI World's $0.99. Hearing Space also leads on rating (4.7 vs 2.0) and update cadence (every 4 days vs every 7 months). On ads, in-app purchases and device support 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
Hearing Space is free to download; MIDI World costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Hearing Space holds the better App Store score, 4.7 against 2.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
Hearing Space ships an update every 4 days, MIDI World every 7 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Hearing Space | MIDI World |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.7 (3 ratings) — better | 2.0 (1 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 4 days — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 261 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Jing Dong | Los Palmos |
Customer experience
Hearing Space
MIDI World
In-app purchases
Hearing Space
No in-app purchases
MIDI World
No in-app purchases









