# Impôts vs Prefecture Alerts

The clearest difference is in-app purchases: Impôts at none against Prefecture Alerts's 2. Impôts also leads on review sentiment (50% vs 22%) and device support (3 vs 1). Prefecture Alerts's advantage is update cadence (fortnightly vs every 4 months). On price 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. Impôts asks for nothing beyond the download.

Impôts ships an update every 4 months, Prefecture Alerts fortnightly. The most recent releases landed on September 9, 2026 and August 24, 2026 respectively.

## The numbers

| Metric | Impôts | 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 | **50.0% of reviews** | 22.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | **Free** | Freemium |
| Size | 14 MB | 13 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Julien Kermarec](https://appshunter.io/developer/955128067) | [GCO Apps](https://appshunter.io/developer/1350106258) |

## What reviewers say

### Impôts

[App page](https://appshunter.io/ios/app/impots/id1369581061)

Easily calculate your income tax with this application. Input your net taxable income, and it will compute your total tax liability and breakdown for each tax bracket. The simulator uses tax brackets set by the Ministry of Economy.

**Highlights:** Calculate income tax, Tax bracket breakdown, Based on Ministry of Economy data, Simulates tax liability

**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 Impôts free?

Impôts 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 Impôts or Prefecture Alerts have ads?

Neither Impôts nor Prefecture Alerts shows ads.

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

Impôts ships an update every 4 months, and Prefecture Alerts fortnightly. Most recently, Impôts was updated on September 9, 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.*