# Billing vs Siotrix

The clearest difference is in-app purchases: Siotrix at none against Billing's 2. Siotrix also leads on iOS requirement (16.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Billing sells 2 in-app purchases, starting at $6.99 per 2 months. Siotrix asks for nothing beyond the download.

## The numbers

| Metric | Billing | Siotrix |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 5 months |
| Size | 14 MB | 49 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [MEDBAY APPS](https://appshunter.io/developer/1878994473) | [ANDREAS LEBZELTER](https://appshunter.io/developer/1864567931) |

## What reviewers say

### Billing

[App page](https://appshunter.io/ios/app/billing-ai-invoice-maker/id6760210200)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2 Month Create Invoice Instantly | $6.99 | per 2 months |
| 6 Month Create Invoice PDF | $14.99 | per 6 months |


### Siotrix

[App page](https://appshunter.io/ios/app/siotrix/id6762041124)

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

**In-app purchases:** none


## Frequently asked questions

### Is Billing free?

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

### Is Siotrix free?

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

### Do Billing or Siotrix have ads?

Neither Billing nor Siotrix shows ads.

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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.*