# Yoost vs Prefecture Alerts

The clearest difference is in-app purchases: Yoost at none against Prefecture Alerts's 2. Yoost also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Prefecture Alerts sells 2 in-app purchases, starting at $4.99 per 7 days. Yoost asks for nothing beyond the download.

Yoost ships an update every 10 days, Prefecture Alerts fortnightly. The most recent releases landed on September 16, 2026 and August 24, 2026 respectively.

## The numbers

| Metric | Yoost | Prefecture Alerts |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/prefecture-alerts/id6751842080/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 22.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Fortnightly |
| Monetization | — | Freemium |
| Size | 37 MB | 13 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Youston, Inc.](https://appshunter.io/developer/1582960836) | [GCO Apps](https://appshunter.io/developer/1350106258) |

## What reviewers say

### Yoost

[App page](https://appshunter.io/ios/app/yoost/id1582960294)

**In-app purchases:** none


### Prefecture Alerts

[App page](https://appshunter.io/ios/app/prefecture-alerts/id6751842080)

This app monitors prefecture websites across France for available appointment slots. It notifies users immediately via push, SMS, or email when a slot opens, saving them the time of manual checking. Users select their prefecture and appointment type to begin receiving alerts.

**Highlights:** Monitors over 120 prefectures and appointment types, Instant notifications via Push, SMS, or Email, Saves time by eliminating manual website refreshing, Supports various appointment types (residence permit, driver's license, etc.), Fast and reliable slot detection

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Weekly, 3 Days Trial) | $4.99 | per 7 days |
| Monthly Subscription | $9.99 | per month |


## Frequently asked questions

### Is Yoost free?

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

### Is Prefecture Alerts free?

Prefecture Alerts is free to download, with in-app purchases available.

### Do Yoost or Prefecture Alerts have ads?

Neither Yoost nor Prefecture Alerts shows ads.

### Which is updated more often, Yoost or Prefecture Alerts?

Yoost ships an update every 10 days, and Prefecture Alerts fortnightly. Most recently, Yoost was updated on September 16, 2026 and Prefecture Alerts on August 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.*