# Preview App vs iDevTools

The clearest difference is update cadence: iDevTools at every 3 months against Preview App's every 13 months. iDevTools also leads on chart position (#117 vs unranked) and price ($0.99 vs $1.99). Preview App's advantage is iOS requirement (15.6 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Preview App costs $1.99 and iDevTools $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Preview App ships an update every 13 months, iDevTools every 3 months. The most recent releases landed on September 21, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Preview App | iDevTools |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 months** |
| Monetization | — | Paid |
| Best chart rank | — | **#117** |
| Size | 8 MB | 4 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cangmu Technology Co., Ltd](https://appshunter.io/developer/1736424342) | [奕 徐](https://appshunter.io/developer/1896745683) |

## What reviewers say

### Preview App

[App page](https://appshunter.io/ios/app/preview-app-store-simulator/id1626025800)

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

**In-app purchases:** none


### iDevTools

[App page](https://appshunter.io/ios/app/idevtools/id6782373788)

**Currently charting:** #117 Top Paid · Developer Tools (US App Store)

This app brings desktop-class web developer tools to Safari on mobile devices. Inspect and edit web pages, run JavaScript, monitor network requests, and manage storage directly from your iPhone or iPad.

**Highlights:** Inspect HTML and CSS, Edit web pages, Run JavaScript in Console, View Network requests, Manage Cookies and Storage, Browse Sources, Audit pages

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

**In-app purchases:** none


## Frequently asked questions

### Is Preview App free?

Preview App costs $1.99, with no in-app purchases.

### Is iDevTools free?

iDevTools costs $0.99, with no in-app purchases.

### Do Preview App or iDevTools have ads?

Neither Preview App nor iDevTools shows ads.

### Which is updated more often, Preview App or iDevTools?

Preview App ships an update every 13 months, and iDevTools every 3 months. Most recently, Preview App was updated on September 21, 2026 and iDevTools on September 20, 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.*