# Facturo vs OS3

The clearest difference is update cadence: Facturo at every 9 days against OS3's monthly. Facturo also leads on iOS requirement (15.5 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Facturo sells 2 in-app purchases, starting at $7.99 per month and OS3 sells 1 in-app purchase, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Facturo ships an update every 9 days, OS3 monthly. The most recent releases landed on July 14, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Facturo | OS3 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Monthly |
| Size | 104 MB | 4 MB |
| Requires iOS | **15.5** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Edgardo Zuniga Rosales](https://appshunter.io/developer/1734685852) | [QR LLC](https://appshunter.io/developer/1820066581) |

## What reviewers say

### Facturo

[App page](https://appshunter.io/ios/app/facturo/id6748260063)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $7.99 | per month |
| Annual Subscription | $79.99 | per year |


### OS3

[App page](https://appshunter.io/ios/app/os3/id6760365662)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OS3 Pro | $12.99 | per month |


## Frequently asked questions

### Is Facturo free?

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

### Is OS3 free?

OS3 is free to download, with in-app purchases available.

### Do Facturo or OS3 have ads?

Neither Facturo nor OS3 shows ads.

### Which is updated more often, Facturo or OS3?

Facturo ships an update every 9 days, and OS3 monthly. Most recently, Facturo was updated on July 14, 2026 and OS3 on September 17, 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.*