# IRIS Alert vs NTN

The clearest difference is iOS requirement: NTN at 15.0 against IRIS Alert's 17.6. 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.

IRIS Alert ships an update every 3 months, NTN every 5 months. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | IRIS Alert | NTN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/iris-alert/id993930650/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | Free | — |
| Size | 18 MB | 72 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Rapid Response Emergency Systems](https://appshunter.io/developer/975085793) | [NTN - Catálogo](https://appshunter.io/developer/1643145943) |

## What reviewers say

### IRIS Alert

[App page](https://appshunter.io/ios/app/iris-alert/id993930650)

This app enables organization members to send and receive critical security alerts, access safety documents, and request assistance. It provides quick access to emergency features like a flashlight and siren, facilitating rapid communication for safety concerns.

**Highlights:** Send and receive security alerts, View safety documents and maps, Request medical or security assistance, Report safety hazards, Flashlight and siren functions

**Features:** macOS Compatibility

**In-app purchases:** none


### NTN

[App page](https://appshunter.io/ios/app/ntn-catalogo/id1643145940)

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

**In-app purchases:** none


## Frequently asked questions

### Is IRIS Alert free?

IRIS Alert is free to download, with no in-app purchases.

### Is NTN free?

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

### Do IRIS Alert or NTN have ads?

Neither IRIS Alert nor NTN shows ads.

### Which is updated more often, IRIS Alert or NTN?

IRIS Alert ships an update every 3 months, and NTN every 5 months. Most recently, IRIS Alert was updated on October 9, 2026 and NTN on October 6, 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.*