# PolyAlerte vs UdeM Alerte

The clearest difference is update cadence: UdeM Alerte at monthly against PolyAlerte's every 39 months. On price, ads, in-app purchases and device support there is nothing between them.

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

PolyAlerte ships an update every 39 months, UdeM Alerte monthly. The most recent releases landed on June 25, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | PolyAlerte | UdeM Alerte |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Monthly** |
| Monetization | Free | — |
| Size | 29 MB | 29 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Corporation de l'Ecole Polytechnique de Montreal](https://appshunter.io/developer/1488647545) | [Université de Montréal](https://appshunter.io/developer/495788472) |

## What reviewers say

### PolyAlerte

[App page](https://appshunter.io/ios/app/polyalerte/id1488647546)

This official campus safety app provides students, faculty, and staff with essential safety alerts and direct access to security resources. Features include emergency contacts, location sharing for friends, reporting suspicious activity, and offline access to emergency procedures and campus maps.

**Highlights:** Emergency Contacts, Friend Walk location sharing, Report suspicious activity, Campus and building maps, Offline emergency procedures, Safety notifications

**Features:** macOS Compatibility

**In-app purchases:** none


### UdeM Alerte

[App page](https://appshunter.io/ios/app/udem-alerte/id6466105934)

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

**In-app purchases:** none


## Frequently asked questions

### Is PolyAlerte free?

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

### Is UdeM Alerte free?

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

### Do PolyAlerte or UdeM Alerte have ads?

Neither PolyAlerte nor UdeM Alerte shows ads.

### Which is updated more often, PolyAlerte or UdeM Alerte?

PolyAlerte ships an update every 39 months, and UdeM Alerte monthly. Most recently, PolyAlerte was updated on June 25, 2026 and UdeM Alerte on September 7, 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.*