NotifyEM vs VSensors
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NotifyEM
This app displays emergency maps and communications, allowing users to subscribe to alerts from organizations. It provides offline map access and detailed incident information, including voice messages and visuals, to help users understand and navigate emergencies.
- Offline emergency maps
- Subscribe to organization alerts
- Customized voice alerts
- Incident navigation on map
- Detailed incident information
- Distance to incident display
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NotifyEM is an iPhone app to display informative emergency-related maps and related voice and visual communications. The maps need to be downloaded only once. After that, they are available on your iPhone offline. The app makes it easy to communicate things that otherwise would be very difficult to explain in a text or voice message. For example, users can instantly understand an irregularly shaped evacuation zone when they see it on a map and can easily decide whether they are in the affected zone or not. Features: - Users can subscribe to a channel created by an organization, such as an Office of Emergency Management or a University Police Department. Should the organization issue an emergency alert or warning, the app will sound a customized voice message, such as “This is an important alert from University Police. Please do not ignore!” - Users can then easily navigate to the incident, which can be viewed on a map. Users can switch to the “details view” that may display instructions, voice messages, photos, and infographics related to the alert and sent by the issuing organization. - The user’s distance from the incident is prominently displayed on the screen in feet and/or miles. Location services need to be active to use this feature. - In Settings, it is possible to subscribe to or unsubscribe from Notification Channels. Those serve the purpose of transmitting notifications only to those who subscribe to a channel. For example, if a Police Department creates its channel, subscribers can opt in to receive communication issued through that channel.
VSensors
This application connects to multiple Bluetooth sensors to monitor environmental conditions like illumination, temperature, humidity, and noise. It displays data in maximum/minimum modes, line charts, and tables, with export options available. Requires Vevor Bluetooth Sensor Series and iOS 9.0 or later.
- Connects multiple Bluetooth sensors simultaneously
- Monitors illumination, temperature, humidity, and noise
- Maximum and minimum display modes
- Line chart and data table views
- Data export in various formats
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Application features: - Multiple Bluetooth sensors, such as illumination, temperature and humidity, noise, etc., can be automatically connected at the same time - Includes maximum minimum display mode - Includes line chart view - Includes view of the data table - Data can be exported in a variety of formats Preconditions for using: - Use the Vevor Bluetooth Sensor Series - IOS 9.0 or an updated version is required to support Bluetooth 4.0 and above devices
Screenshots
Verdict
The clearest difference is rating: NotifyEM at 5.0 against VSensors's 2.1. VSensors's advantage is ratings volume (7 vs 1). On price, update cadence, 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.
NotifyEM holds the better App Store score, 5.0 against 2.1. That said, the two scores are not equally well evidenced: VSensors has 7 ratings behind it against 1, so its average is the more settled of the two.
NotifyEM ships an update every 5 months, VSensors every 7 months. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.
| Parameter | NotifyEM | VSensors |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 2.1 (7 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 1 | 7 — better |
| Update frequency | Every 5 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 43 MB |
| Age rating | 4+ | 17+ |
| Developer | MapText, Inc. | ZHANGZHOU EASTERN INTELLIGENT METER CO., LTD. |
Customer experience
NotifyEM
VSensors
In-app purchases
NotifyEM
No in-app purchases
VSensors
No in-app purchases
