EchoVision vs SMS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EchoVision
Experience the world through the eyes of a bat with this mixed reality art installation. Using a bat-shaped mask and your smartphone's LiDAR, visualize echoes and understand echolocation. It offers a unique perspective on non-human sensory perception and promotes ecological appreciation.
- Simulates bat echolocation
- Mixed reality art experience
- Handheld bat-shaped masks
- Smartphone LiDAR integration
- Visualizes propagating echoes
- Promotes ecocentric design perspective
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EchoVision is an interactive mixed reality art experience that simulates bat echolocation using custom-designed, handheld, bat-shaped masks based on the open-source HoloKit headset. As users initiate sounds, they experience echolocation—the remarkable navigation method bats employ in darkness—through visual representations of propagating echoes mapped onto the real-world 3D shape of the surrounding environment, scanned in real-time by the LiDAR sensor of a smartphone mounted on the masks. By providing a unique glimpse into how non-human creatures perceive their sensory world, EchoVision promotes an ecocentric design perspective, fostering interspecies understanding and appreciation.
SMS
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SMS: Gesture-Based Electronic Sound Instrument Discover the power of gesture-based music creation with SMS - Lite, an interactive mobile app designed for musicians, performers, and creators. Developed by Smart Motion System (SMS), this lite version of the app transforms your mobile device into an intuitive sound instrument, capturing your gestures and movements through touch screens, sensors, and cameras to produce dynamic electronic soundscapes. SMS leverages your phone’s accelerometer, gyroscope, and rotation matrix data to provide nearly 30 customizable parameters for real-time sound manipulation. Whether you’re crafting experimental music or enhancing a live performance, SMS - Lite gives you the freedom to explore new sonic possibilities through movement and touch. Features: • Gesture-based sound manipulation through touch, sensors, and camera input. • Real-time sound control with nearly 30 interactive parameters. • Ideal for musicians, performers, dancers, and creators. • A streamlined, easy-to-use interface for quick setup and performance. • Lite version for mobile performance on the go. Let your movements shape the music. SMS - Lite makes it easy to turn gestures into sound and bring your performances to life in a whole new way.
Screenshots
Verdict
The clearest difference is price: EchoVision at Free against SMS's $1.99. EchoVision also leads on update cadence (every 2 months vs every 20 months). SMS's advantage is chart position (#197 vs unranked) and iOS requirement (15.6 vs 17.0). 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
EchoVision is free to download; SMS costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
EchoVision ships an update every 2 months, SMS every 20 months. The most recent releases landed on June 5, 2026 and September 10, 2026 respectively.
| Parameter | EchoVision | SMS |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months — better | Every 20 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Best chart rank | — | #197 — better |
| Devices | iPhone, iPad, Vision Pro — better | iPhone, iPod |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 85 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Holo Interactive US, Inc. | 若伦 翁 |
In-app purchases
EchoVision
No in-app purchases
SMS
No in-app purchases









