# Invoice Maker vs Petronix

The clearest difference is in-app purchases: Petronix at none against Invoice Maker's 3. Petronix also leads on update cadence (every 3 days vs every 2 weeks). Invoice Maker's advantage is iOS requirement (13.0 vs 15.5). On price, ads and device support there is nothing between them.

Both are free to download. Invoice Maker sells 3 in-app purchases, starting at $4.99 per 7 days. Petronix asks for nothing beyond the download.

Invoice Maker ships an update every 2 weeks, Petronix every 3 days. The most recent releases landed on September 28, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Invoice Maker | Petronix |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 71 MB | 74 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | +4 | 4+ |
| Developer | [Muhammad Haroon](https://appshunter.io/developer/1661411716) | [Sanjay Patel](https://appshunter.io/developer/6802276354) |

## What reviewers say

### Invoice Maker

[App page](https://appshunter.io/ios/app/invoice-maker-simple-billing/id6749439258)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Monthly | $6.99 | per month |
| Yearly | $69.99 | per year |


### Petronix

[App page](https://appshunter.io/ios/app/petronix-n/id6802276352)

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

**In-app purchases:** none


## Frequently asked questions

### Is Invoice Maker free?

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

### Is Petronix free?

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

### Do Invoice Maker or Petronix have ads?

Neither Invoice Maker nor Petronix shows ads.

### Which is updated more often, Invoice Maker or Petronix?

Invoice Maker ships an update every 2 weeks, and Petronix every 3 days. Most recently, Invoice Maker was updated on September 28, 2026 and Petronix on October 12, 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.*