# SIGNALERT App vs GRR Map

The clearest difference is rating: GRR Map at 5.0 against SIGNALERT App's 1.0. GRR Map also leads on ratings volume (3 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GRR Map holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

SIGNALERT App ships an update every 2 months, GRR Map monthly. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SIGNALERT App | GRR Map |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/signalert-app/id811283419/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/grr-map/id1587759951/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 23 MB | 85 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Signalert SARL](https://appshunter.io/developer/811283422) | [CultivateAI](https://appshunter.io/developer/1547278115) |

## What reviewers say

### SIGNALERT App

[App page](https://appshunter.io/ios/app/signalert-app/id811283419)

Report and monitor natural or man-made disasters, climate change effects, and extreme events. Share observations, receive real-time alerts from other users, and access safety tips and institutional resources.

**Highlights:** Report natural and man-made disasters, Crowdmap observations with photos, Receive real-time alerts from users, Access safety behavior tips, Monitor worldwide places of interest, Share alerts on social networks, Create community monitoring networks

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

**In-app purchases:** none


### GRR Map

[App page](https://appshunter.io/ios/app/grr-map/id1587759951)

Navigate a large ranch with an interactive map. View locations and roads, even without an internet connection. Ideal for visitors to explore the grounds.

**Highlights:** Interactive ranch map, View locations and roads, Offline capability, Visitor-friendly navigation

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SIGNALERT App free?

SIGNALERT App is free to download, with no in-app purchases.

### Is GRR Map free?

GRR Map is free to download, with no in-app purchases.

### Which has better reviews, SIGNALERT App or GRR Map?

GRR Map is rated higher. SIGNALERT App averages 1.0 out of 5 from 1 ratings, while GRR Map averages 5.0 from 3 ratings.

### Do SIGNALERT App or GRR Map have ads?

Neither SIGNALERT App nor GRR Map shows ads.

### Which is updated more often, SIGNALERT App or GRR Map?

SIGNALERT App ships an update every 2 months, and GRR Map monthly. Most recently, SIGNALERT App was updated on October 22, 2026 and GRR Map on October 24, 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.*