# AirApp vs SIGMA BG

The clearest difference is iOS requirement: SIGMA BG at 11.0 against AirApp's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

AirApp ships an update every 14 months, SIGMA BG every 11 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | AirApp | SIGMA BG |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 11 months** |
| Size | 13 MB | 26 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Software Felix](https://appshunter.io/developer/1694661782) | [ID&A S.r.l.](https://appshunter.io/developer/1446283055) |

## What reviewers say

### AirApp

[App page](https://appshunter.io/ios/app/airapp/id6450785124)

**In-app purchases:** none


### SIGMA BG

[App page](https://appshunter.io/ios/app/sigma-bg/id6752767809)

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

**In-app purchases:** none


## Frequently asked questions

### Is AirApp free?

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

### Is SIGMA BG free?

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

### Do AirApp or SIGMA BG have ads?

Neither AirApp nor SIGMA BG shows ads.

### Which is updated more often, AirApp or SIGMA BG?

AirApp ships an update every 14 months, and SIGMA BG every 11 months. Most recently, AirApp was updated on November 3, 2026 and SIGMA BG on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*