urobi vs Ear Sonar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
urobi
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This app is designed for people who are blind or visually impaired. Built to be simple, only three buttons and reliable from the very first moment. Forget all overcomplicated apps. Only focus on key functionality. Core Features (Large Buttons) Make a Picture Take a photo instantly using your phone’s back camera. The app analyzes the image and describes what’s in front of you—clearly and naturally, like a human assistant. Scan Text Point your camera at any text—documents, signs, menus—and hear it read aloud with high accuracy. Ask Questions Want more details? Ask follow-up questions about what you just captured or anything else. The app responds intelligently and conversationally. Designed for Accessibility Only three large, easy-to-find buttons Works without needing to see the screen, haptic feedback Immediate start via SIRI, no extra taps required Fully voice-based responses Adjustable speaking speed Multiple voice options Credit base system to pay what you use
Ear Sonar
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Ear Sonar is an accessibility app that helps people who are blind or have low vision sense nearby space. It uses the iPhone’s rear LiDAR to scan what’s ahead, then turns that depth into spatial audio—or haptics—so you can “hear” the environment. What you can hear • Distance: nearer sounds arrive sooner, denser, or higher in pitch; farther sounds are sparser and lower • Direction: binaural spatial audio places objects to your left or right • Shape cues: flat walls, slopes, and gaps create distinct sonic rhythms Four sensing modes • Echolocation: row-by-row pings outline space like sonar returns • Pitch sonar: a rising scan line encodes distance as pitch in real time • Continuous sonar: a fixed center line for a live depth profile while you walk • Haptic sonar: vibration timing encodes distance—no headphones required Semantic markers Optionally detect people, vehicles, dogs, chairs, tables, doors, and more, then announce them in stereo from their real-world direction. All processing stays on device; nothing is uploaded. Tips • Stereo headphones are recommended (Apple headphones with head tracking and spatial audio work best); haptic mode can be used without headphones • Full VoiceOver support, including gestures and the rotor • Requires an iPhone with LiDAR (iPhone 12 Pro and later Pro models) • This is an assistive tool—not a replacement for a cane, guide dog, or your own judgment when traveling Open the app and start hearing space. Camera preview is on by default so sighted helpers can see what’s being scanned. To keep the experience focused, the app intentionally avoids UI that isn’t essential to core sensing. Questions or suggestions: ninerwong@outlook.com
Screenshots
Verdict
The clearest difference is in-app purchases: Ear Sonar at none against urobi's 4. On price, ads, device support and iOS requirement 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. urobi sells 4 one-off in-app purchases. Ear Sonar asks for nothing beyond the download.
| Parameter | urobi | Ear Sonar |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Robert Berthold Schirmer | 乃君 黄 |
In-app purchases
urobi
- 500 Credits$1.99
- 2000 Credits$3.99
- 5000 Credits$17.99
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- 14000 Credits$44.99
Ear Sonar
No in-app purchases









