# Skywatch Installer vs E

The clearest difference is update cadence: E at weekly against Skywatch Installer's every 3 months. Skywatch Installer's advantage is iOS requirement (10.0 vs 13). 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.

Skywatch Installer ships an update every 3 months, E weekly. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Skywatch Installer | E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Size | 10 MB | 37 MB |
| Requires iOS | **10.0** | 13 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [SkyWatch Innovation](https://appshunter.io/developer/523592056) | [CARMAX CO., LTD.](https://appshunter.io/developer/1527718609) |

## What reviewers say

### Skywatch Installer

[App page](https://appshunter.io/ios/app/skywatch-installer/id1459962786)

**Features:** macOS Compatibility

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-mirror-pro-plus/id6744044209)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Skywatch Installer free?

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

### Is E free?

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

### Do Skywatch Installer or E have ads?

Neither Skywatch Installer nor E shows ads.

### Which is updated more often, Skywatch Installer or E?

Skywatch Installer ships an update every 3 months, and E weekly. Most recently, Skywatch Installer was updated on October 3, 2026 and E on October 4, 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.*