# Invoice Rex vs Bousanm

The clearest difference is in-app purchases: Bousanm at none against Invoice Rex's 2. Invoice Rex's advantage is update cadence (monthly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Invoice Rex sells 2 in-app purchases, starting at $4.99 per month. Bousanm asks for nothing beyond the download.

Invoice Rex ships an update monthly, Bousanm every 3 months. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Invoice Rex | Bousanm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Size | 19 MB | 69 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Charlie Monroe Software, s.r.o.](https://appshunter.io/developer/647791583) | [Bousanm llc](https://appshunter.io/developer/1875763814) |

## What reviewers say

### Invoice Rex

[App page](https://appshunter.io/ios/app/invoice-rex/id6480509935)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $49.99 | per year |


### Bousanm

[App page](https://appshunter.io/ios/app/bousanm/id6758920267)

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

**In-app purchases:** none


## Frequently asked questions

### Is Invoice Rex free?

Invoice Rex is free to download, with in-app purchases available.

### Is Bousanm free?

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

### Do Invoice Rex or Bousanm have ads?

Neither Invoice Rex nor Bousanm shows ads.

### Which is updated more often, Invoice Rex or Bousanm?

Invoice Rex ships an update monthly, and Bousanm every 3 months. Most recently, Invoice Rex was updated on November 8, 2026 and Bousanm on October 31, 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.*