FaceSensor vs EchoVision
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FaceSensor
This app uses your iPhone camera and haptic feedback to alert you to the presence of people nearby. It provides tactile sensations that vary in intensity and pattern based on distance and direction, offering a discreet awareness of your surroundings.
- Detects people using iPhone camera
- Varying haptic feedback for distance
- Directional haptic patterns
- Discrete awareness of surroundings
- Apple Watch integration for reinforced feedback
- Stationary use only
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FaceSensor is an entertaining way to use haptics to provide information to a blind user of the presence of another person as viewed by the iPhone camera. It does this gently and quietly by way of tactile sensations. These sensations will vary depending on the distance to the observed individual. Farther distances result in fainter signals and closer distances result in stronger signals. Left, center, and right sectors are also differentiated by varying haptic patterns. It is the discrete way to be aware of someone nearby. The Apple Watch can also be used with FaceSensor for reinforced sector information. FaceSensor is for stationary use only.
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.
Screenshots
Verdict
The clearest difference is rating: EchoVision at 5.0 against FaceSensor's 4.8. FaceSensor's advantage is iOS requirement (11.4 vs 17.0). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
EchoVision holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively.
| Parameter | FaceSensor | EchoVision |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | — | 80.0% of reviews |
| Number of ratings | 4 — better | 2 |
| Update frequency | — | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Vision Pro |
| Requires iOS | 11.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 21 MB | 85 MB |
| Age rating | 4+ | 4+ |
| Developer | DeutschTechnology Corp. | Holo Interactive US, Inc. |
Customer experience
FaceSensor
EchoVision
In-app purchases
FaceSensor
No in-app purchases
EchoVision
No in-app purchases









