# Simul'Impôt vs SPARK by SILEX

The clearest difference is ads: Simul'Impôt at none against SPARK by SILEX's shown. SPARK by SILEX's advantage is update cadence (every 3 weeks vs every 7 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Simul'Impôt ships an update every 7 months, SPARK by SILEX every 3 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Simul'Impôt | SPARK by SILEX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simulimpot/id440200931/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 76.7% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 17 MB | 26 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Patrick BODET](https://appshunter.io/developer/440200934) | [Silex](https://appshunter.io/developer/1639862599) |

## What reviewers say

### Simul'Impôt

[App page](https://appshunter.io/ios/app/simulimpot/id440200931)

Estimate your income tax based on last year's earnings. Supports various income types, including salaries, independent work, savings, and real estate. Includes tax reductions and credits, with iCloud backup for simulations and fiscal news updates.

**Highlights:** Income tax estimation, Supports multiple income sources, Calculates tax reductions/credits, iCloud Drive backup, Fiscal news reader, Push notifications for updates

**Features:** macOS Compatibility

**In-app purchases:** none


### SPARK by SILEX

[App page](https://appshunter.io/ios/app/spark-by-silex/id6446899759)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Simul'Impôt free?

Simul'Impôt is free to download, with no in-app purchases.

### Is SPARK by SILEX free?

SPARK by SILEX is free to download, with no in-app purchases.

### Do Simul'Impôt or SPARK by SILEX have ads?

SPARK by SILEX shows ads; Simul'Impôt does not.

### Which is updated more often, Simul'Impôt or SPARK by SILEX?

Simul'Impôt ships an update every 7 months, and SPARK by SILEX every 3 weeks. Most recently, Simul'Impôt was updated on October 24, 2026 and SPARK by SILEX on October 27, 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.*