# DCO vs Prefecture Alerts

The clearest difference is in-app purchases: DCO at none against Prefecture Alerts's 2. DCO also leads on device support (3 vs 1). Prefecture Alerts's advantage is update cadence (fortnightly vs every 12 months). On price, ads and iOS requirement there is nothing between them.

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

DCO ships an update every 12 months, Prefecture Alerts fortnightly. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | DCO | 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 12 months | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 46 MB | 13 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Diocese Copte Orthodoxe de Paris et du Nord de la France](https://appshunter.io/developer/1650668558) | [GCO Apps](https://appshunter.io/developer/1350106258) |

## What reviewers say

### DCO

[App page](https://appshunter.io/ios/app/dco/id6747406161)

**Features:** macOS Compatibility

**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 DCO free?

DCO 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 DCO or Prefecture Alerts have ads?

Neither DCO nor Prefecture Alerts shows ads.

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

DCO ships an update every 12 months, and Prefecture Alerts fortnightly. Most recently, DCO was updated on October 4, 2026 and Prefecture Alerts on October 8, 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.*