# ÉTSMobile vs PolyAlerte

The clearest difference is update cadence: ÉTSMobile at every 2 months against PolyAlerte's every 39 months. On price, review sentiment, 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.

ÉTSMobile ships an update every 2 months, PolyAlerte every 39 months. The most recent releases landed on September 22, 2026 and June 25, 2026 respectively.

## The numbers

| Metric | ÉTSMobile | PolyAlerte |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/etsmobile/id557463461/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | **57.6% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 39 months |
| Monetization | Free | Free |
| Size | 41 MB | 29 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [École de Technologie Supérieure](https://appshunter.io/developer/557463464) | [Corporation de l'Ecole Polytechnique de Montreal](https://appshunter.io/developer/1488647545) |

## What reviewers say

### ÉTSMobile

[App page](https://appshunter.io/ios/app/etsmobile/id557463461)

Access essential student services from your mobile device. View grades, check your schedule, manage your profile, and find quick links to school resources. This app is developed by students for students.

**Highlights:** View grades, Check schedule, Student profile, School bill access, Useful short links, Emergency process

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is ÉTSMobile free?

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

### Is PolyAlerte free?

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

### Do ÉTSMobile or PolyAlerte have ads?

Neither ÉTSMobile nor PolyAlerte shows ads.

### Which is updated more often, ÉTSMobile or PolyAlerte?

ÉTSMobile ships an update every 2 months, and PolyAlerte every 39 months. Most recently, ÉTSMobile was updated on September 22, 2026 and PolyAlerte on June 25, 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.*