# Hazard Notifier vs Skywatch BL

The clearest difference is review sentiment: Hazard Notifier at 50% against Skywatch BL's 0%. Skywatch BL's advantage is in-app purchases (none vs 1) and iOS requirement (14.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Hazard Notifier sells 1 one-off in-app purchase. Skywatch BL asks for nothing beyond the download.

Hazard Notifier ships an update every 2 months, Skywatch BL every 3 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Hazard Notifier | Skywatch BL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (8 ratings)](https://appshunter.io/ios/app/hazard-notifier/id703558388/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 48 MB | 18 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ITDT LLC](https://appshunter.io/developer/703558391) | [JDC Electronic SA](https://appshunter.io/developer/855129249) |

## What reviewers say

### Hazard Notifier

[App page](https://appshunter.io/ios/app/hazard-notifier/id703558388)

Receive timely alerts for a wide range of potential hazards, including severe weather, natural disasters, and even space events. Customize notification ranges and types, and contribute to community safety by reporting emerging incidents.

**Highlights:** Customizable notification range and hazard types, Real-time hazard tracking on a map, User reporting of emerging events, Push notifications for critical alerts, Wide range of hazard categories including weather and natural disasters, Reporting statistics for users

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free Version | $0.99 | one-time |


### Skywatch BL

[App page](https://appshunter.io/ios/app/skywatch-bl/id1033103915)

This app connects to compatible weather stations via Bluetooth to display real-time environmental data. View measurements, history, and map displays with customizable units and modes. Supports multiple device models and offers online firmware updates.

**Highlights:** Real-time measurements, Graphical display, Measurement history, Map display, Customizable units, Multiple device support

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Hazard Notifier free?

Hazard Notifier is free to download, with in-app purchases available.

### Is Skywatch BL free?

Skywatch BL is free to download, with no in-app purchases.

### Do Hazard Notifier or Skywatch BL have ads?

Neither Hazard Notifier nor Skywatch BL shows ads.

### Which is updated more often, Hazard Notifier or Skywatch BL?

Hazard Notifier ships an update every 2 months, and Skywatch BL every 3 months. Most recently, Hazard Notifier was updated on November 1, 2026 and Skywatch BL on November 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*