# Sime vs 智守佳

The clearest difference is update cadence: 智守佳 at every 2 months against Sime's every 3 months. Sime's advantage is iOS requirement (10.0 vs 13.0). 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.

Sime ships an update every 3 months, 智守佳 every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Sime | 智守佳 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 29 MB | 41 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Allied Control System Co., Ltd.](https://appshunter.io/developer/1094154581) | [深圳市云守佳科技有限公司](https://appshunter.io/developer/1729039918) |

## What reviewers say

### Sime

[App page](https://appshunter.io/ios/app/sime/id1229532523)

**Features:** macOS Compatibility

**In-app purchases:** none


### 智守佳

[App page](https://appshunter.io/ios/app/id1471084773)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sime free?

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

### Is 智守佳 free?

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

### Do Sime or 智守佳 have ads?

Neither Sime nor 智守佳 shows ads.

### Which is updated more often, Sime or 智守佳?

Sime ships an update every 3 months, and 智守佳 every 2 months. Most recently, Sime was updated on November 2, 2026 and 智守佳 on November 3, 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.*