# Simul'Impôt vs Heelio Decode

The clearest difference is in-app purchases: Simul'Impôt at none against Heelio Decode's 2. Simul'Impôt also leads on iOS requirement (13.0 vs 15.0). Heelio Decode's advantage is update cadence (every 5 days vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Heelio Decode sells 2 in-app purchases, starting at $17.00 per month. Simul'Impôt asks for nothing beyond the download.

Simul'Impôt ships an update every 7 months, Heelio Decode every 5 days. The most recent releases landed on November 1, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Simul'Impôt | Heelio Decode |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 17 MB | 6 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Patrick BODET](https://appshunter.io/developer/440200934) | [Heelio](https://appshunter.io/developer/6772327245) |

## 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


### Heelio Decode

[App page](https://appshunter.io/ios/app/heelio-decode/id6772327243)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decode Premium | $17.00 | per month |
| Decode Premium, un an | $179.00 | per year |


## Frequently asked questions

### Is Simul'Impôt free?

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

### Is Heelio Decode free?

Heelio Decode is free to download, with in-app purchases available.

### Do Simul'Impôt or Heelio Decode have ads?

Neither Simul'Impôt nor Heelio Decode shows ads.

### Which is updated more often, Simul'Impôt or Heelio Decode?

Simul'Impôt ships an update every 7 months, and Heelio Decode every 5 days. Most recently, Simul'Impôt was updated on November 1, 2026 and Heelio Decode on November 10, 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.*