# 451F vs PaieExpress

The clearest difference is update cadence: PaieExpress at every 6 weeks against 451F's every 11 months. 451F's advantage is iOS requirement (11.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

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

451F ships an update every 11 months, PaieExpress every 6 weeks. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 451F | PaieExpress |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 26 MB | 19 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACD Groupe](https://appshunter.io/developer/1033556694) | [@Intek.ctr](https://appshunter.io/developer/1667825954) |

## What reviewers say

### 451F

[App page](https://appshunter.io/ios/app/451f/id1417217337)

**In-app purchases:** none


### PaieExpress

[App page](https://appshunter.io/ios/app/paieexpress/id1667865256)

This payroll software simplifies the management of payslips and payroll documents. It handles various tax deductions, social contributions, and specific sector requirements. The app supports numerous employee profiles and payroll regimes.

**Highlights:** Payslip generation, Tax deduction management, Social contribution calculation, Overtime management, Leave and absence tracking, Expense and bonus management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 451F free?

451F is free to download, with no in-app purchases.

### Is PaieExpress free?

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

### Do 451F or PaieExpress have ads?

Neither 451F nor PaieExpress shows ads.

### Which is updated more often, 451F or PaieExpress?

451F ships an update every 11 months, and PaieExpress every 6 weeks. Most recently, 451F was updated on October 3, 2026 and PaieExpress on October 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.*