# YAT Smart Tools vs 4SISON

YAT Smart Tools and 4SISON are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

YAT Smart Tools ships an update every 5 weeks, 4SISON every 3 weeks. The most recent releases landed on September 17, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | YAT Smart Tools | 4SISON |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 57 MB | 62 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [浙江亚特电器有限公司](https://appshunter.io/developer/1513697375) | [SABRE ITALIA SRL](https://appshunter.io/developer/1740695780) |

## What reviewers say

### YAT Smart Tools

[App page](https://appshunter.io/ios/app/yat-smart-tools/id1632579632)

**Features:** macOS Compatibility

**In-app purchases:** none


### 4SISON

[App page](https://appshunter.io/ios/app/4sison/id6484508008)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is YAT Smart Tools free?

YAT Smart Tools is free to download, with no in-app purchases.

### Is 4SISON free?

4SISON is free to download, with no in-app purchases.

### Do YAT Smart Tools or 4SISON have ads?

Neither YAT Smart Tools nor 4SISON shows ads.

### Which is updated more often, YAT Smart Tools or 4SISON?

YAT Smart Tools ships an update every 5 weeks, and 4SISON every 3 weeks. Most recently, YAT Smart Tools was updated on September 17, 2026 and 4SISON on September 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.*