# SIGNALERT App vs Terrain Elevation Profile

The clearest difference is in-app purchases: SIGNALERT App at none against Terrain Elevation Profile's 1. SIGNALERT App also leads on iOS requirement (11.0 vs 17.0). Terrain Elevation Profile's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Terrain Elevation Profile sells 1 one-off in-app purchase. SIGNALERT App asks for nothing beyond the download.

SIGNALERT App ships an update every 2 months, Terrain Elevation Profile every 3 weeks. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | SIGNALERT App | Terrain Elevation Profile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/signalert-app/id811283419/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 30 MB | 56 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Signalert SARL](https://appshunter.io/developer/811283422) | [Ivan Blajic](https://appshunter.io/developer/1457447712) |

## 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

**In-app purchases:** none


### Terrain Elevation Profile

[App page](https://appshunter.io/ios/app/terrain-elevation-profile/id6777229683)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Version | $4.99 | one-time |


## Frequently asked questions

### Is SIGNALERT App free?

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

### Is Terrain Elevation Profile free?

Terrain Elevation Profile is free to download, with in-app purchases available.

### Do SIGNALERT App or Terrain Elevation Profile have ads?

Neither SIGNALERT App nor Terrain Elevation Profile shows ads.

### Which is updated more often, SIGNALERT App or Terrain Elevation Profile?

SIGNALERT App ships an update every 2 months, and Terrain Elevation Profile every 3 weeks. Most recently, SIGNALERT App was updated on October 5, 2026 and Terrain Elevation Profile on October 12, 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.*