# 智慧家 vs E

The clearest difference is update cadence: E at every 2 weeks against 智慧家's every 55 months. 智慧家's advantage is iOS requirement (13.0 vs 15). 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.

智慧家 ships an update every 55 months, E every 2 weeks. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | 智慧家 | E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 55 months | **Every 2 weeks** |
| Size | 394 MB | 40 MB |
| Requires iOS | **13.0** | 15 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DoorGuard Technology Co., Ltd.](https://appshunter.io/developer/1612774860) | [CARMAX CO., LTD.](https://appshunter.io/developer/1527718609) |

## What reviewers say

### 智慧家

[App page](https://appshunter.io/ios/app/dg-lock/id1612774858)

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

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-mirror-pro/id6739514204)

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

**In-app purchases:** none


## Frequently asked questions

### Is 智慧家 free?

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

### Is E free?

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

### Do 智慧家 or E have ads?

Neither 智慧家 nor E shows ads.

### Which is updated more often, 智慧家 or E?

智慧家 ships an update every 55 months, and E every 2 weeks. Most recently, 智慧家 was updated on October 6, 2026 and E on October 12, 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.*