# JettDB vs HTML Web Preview

The clearest difference is ads: JettDB at none against HTML Web Preview's shown. HTML Web Preview's advantage is iOS requirement (17.0 vs 26.5). On price, 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.

## The numbers

| Metric | JettDB | HTML Web Preview |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Weekly |
| Size | 3 MB | 8 MB |
| Requires iOS | 26.5 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gale Wolfenbarger](https://appshunter.io/developer/1893419175) | [Do Yun Kim](https://appshunter.io/developer/6811644863) |

## What reviewers say

### JettDB

[App page](https://appshunter.io/ios/app/jettdb/id6789318029)

**Features:** Vision Pro support

**In-app purchases:** none


### HTML Web Preview

[App page](https://appshunter.io/ios/app/html-web-preview-js-css-json/id6811644861)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JettDB free?

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

### Is HTML Web Preview free?

HTML Web Preview is free to download, with no in-app purchases.

### Do JettDB or HTML Web Preview have ads?

HTML Web Preview shows ads; JettDB does not.

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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.*