Comparison

Hearing Space vs EvilTwin

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

Head to head
About

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.

Highlights
  • AI-based image analysis
  • Machine vision for spatial inference
  • Interactive sound generation
  • Touch-based sonic exploration
  • Perceptual instrument interface
  • Artistic and exploratory experience
Features
Read full description

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

About

EvilTwin

This audio effect plugin adds width, motion, and unique character to your sound. It offers creative stereo enhancement and dynamic spatial animation, suitable for subtle polish or dramatic transformations. Designed for musicians and sound designers, it encourages sonic exploration with a focused interface.

Highlights
  • Creative stereo enhancement and widening
  • Dynamic movement and spatial animation
  • Subtle-to-extreme sound shaping
  • Performance-focused interface
  • AUv3 support for iPad and Mac
  • Works with popular music hosts
Features
Read full description

Evil Twin is a creative stereo processing effect designed to add width, motion, depth, and unexpected character to your sound. Built for musicians, producers, sound designers, and experimental artists, Evil Twin combines stereo enhancement with controlled instability, allowing you to move from subtle spatial polish to dramatic transformations with a simple and focused interface. Whether you're widening a synth, adding movement to a pad, creating animated textures, or pushing sounds into unfamiliar territory, Evil Twin encourages exploration while remaining fast and musical to use. Features: • Creative stereo enhancement and widening • Dynamic movement and spatial animation • Subtle-to-extreme sound shaping possibilities • Simple, performance-focused interface • AUv3 support for iPad and Mac • Works in compatible hosts including GarageBand, Logic Pro, AUM, Cubasis, and Audiobus Evil Twin is designed for creators who enjoy discovering new sounds rather than following predictable presets. Sometimes the best results happen when things drift a little off course. Basic usage guide at folinaaudio.com.

Screenshots

Hearing Space4 screens
EvilTwin1 screens

Verdict

The call

The clearest difference is price: Hearing Space at Free against EvilTwin's $2.99. EvilTwin's advantage is rating (5.0 vs 4.7) and iOS requirement (12.0 vs 15.0). On ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

Hearing Space is free to download; EvilTwin costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

EvilTwin holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

Scorecard4 real differences · 6 level
Hearing Space versus EvilTwin: the parameters behind the verdict, then further details
ParameterHearing SpaceEvilTwin
PriceFree — better$2.99
Rating4.7 (3 ratings)5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings3 — better2
Update frequencyEvery 4 days—
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.012.0 — better
Further details — not scored
Size261 MB17 MB
Age rating4+4+
DeveloperJing DongJeremy Phillips

Customer experience

Hearing Space

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

EvilTwin

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Hearing Space

No in-app purchases

None

EvilTwin

No in-app purchases

Questions

Is Hearing Space free?
Hearing Space is free to download, with no in-app purchases.
Is EvilTwin free?
EvilTwin costs $2.99, with no in-app purchases.
Which has better reviews, Hearing Space or EvilTwin?
EvilTwin is rated higher. Hearing Space averages 4.7 out of 5 from 3 ratings, while EvilTwin averages 5.0 from 2 ratings.
Do Hearing Space or EvilTwin have ads?
Neither Hearing Space nor EvilTwin shows ads.

Other comparisons