# OneTools vs Simple Viewer

The clearest difference is update cadence: OneTools at weekly against Simple Viewer's monthly. OneTools also leads on iOS requirement (15.6 vs 17.0). 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.

OneTools ships an update weekly, Simple Viewer monthly. The most recent releases landed on October 8, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | OneTools | Simple Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Size | 3 MB | 6 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HuaiBor Technology Co.,Ltd](https://appshunter.io/developer/1411211005) | [STLink](https://appshunter.io/developer/1382605307) |

## What reviewers say

### OneTools

[App page](https://appshunter.io/ios/app/onetools/id6762242793)

**In-app purchases:** none


### Simple Viewer

[App page](https://appshunter.io/ios/app/simple-viewer/id6762638850)

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

**In-app purchases:** none


## Frequently asked questions

### Is OneTools free?

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

### Is Simple Viewer free?

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

### Do OneTools or Simple Viewer have ads?

Neither OneTools nor Simple Viewer shows ads.

### Which is updated more often, OneTools or Simple Viewer?

OneTools ships an update weekly, and Simple Viewer monthly. Most recently, OneTools was updated on October 8, 2026 and Simple Viewer on October 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.*