SonarVision vs Compagnon Train
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SonarVision
This app provides highly accurate pedestrian navigation for visually impaired individuals. Users can create custom routes and have loved ones verify them for precise, independent travel. It leverages advanced visual positioning technology for sub-meter accuracy.
- Sub-meter precision pedestrian guidance
- Custom route creation and verification
- Independent navigation for visually impaired
- VoiceOver accessibility
- Visual Positioning System (VPS) technology
- Web platform for route management
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SonarVision guides you with sub-meter precision on pedestrian routes prepared and verified by your loved ones. Step 1: Create a route between two locations. Step 2: Ask a friend or a loved one to verify and customize the route. Step 3: Follow the route independently with SonarVision’s ultra-precise guidance. The app is 100% accessible with VoiceOver and was designed from the ground up with the help of many visually impaired individuals. SonarVision uses a VPS (Visual Positioning System) developed by Apple. It compares the video captured by your phone with Apple or Google Maps’ panoramic images to refine your position to within one meter. Routes prepared by your loved ones is done through our web platform. Visit our website to explore all of SonarVision’s features!
Compagnon Train
This app provides audio announcements and displays station names for specific Paris Metro lines before each stop. It covers lines 3 bis, 7, 7 bis, 8, 10, and 12.
- Audio station announcements
- Displays station names
- Supports Metro lines 3 bis, 7, 7 bis, 8, 10, 12
- Real-time information
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L’application Compagnon Train diffuse le son et affiche le nom de la station de métro avant l’arrêt du train sur les lignes 3 bis, 7, 7 bis, 8, 10 et 12 du métro parisien.
Screenshots
Verdict
The clearest difference is rating: SonarVision at 5.0 against Compagnon Train's 1.0. Compagnon Train's advantage is monetization model (free vs ad-supported) and iOS requirement (15.0 vs 17.0). On price, ratings volume 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.
SonarVision holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
| Parameter | SonarVision | Compagnon Train |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 1.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Fortnightly | — |
| Ads | No | — |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone — better | — |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 39 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | SonarVision | OnYourMap SA |
In-app purchases
SonarVision
No in-app purchases
Compagnon Train
No in-app purchases
