# Axxon vs SI

The clearest difference is update cadence: SI at every 3 days against Axxon's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Axxon ships an update every 7 months, SI every 3 days. The most recent releases landed on October 8, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Axxon | SI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 days** |
| Size | 26 MB | 41 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dual Fuel Company LLC](https://appshunter.io/developer/1781570087) | [Sensor Industries](https://appshunter.io/developer/1510183454) |

## What reviewers say

### Axxon

[App page](https://appshunter.io/ios/app/axxon/id6738631567)

**Features:** macOS Compatibility

**In-app purchases:** none


### SI

[App page](https://appshunter.io/ios/app/si-field/id6762649325)

**In-app purchases:** none


## Frequently asked questions

### Is Axxon free?

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

### Is SI free?

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

### Do Axxon or SI have ads?

Neither Axxon nor SI shows ads.

### Which is updated more often, Axxon or SI?

Axxon ships an update every 7 months, and SI every 3 days. Most recently, Axxon was updated on October 8, 2026 and SI on September 11, 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.*