# Device Information Tool vs Custom JS & CSS for Safari

The clearest difference is chart position: Device Information Tool at #11 against Custom JS & CSS for Safari's #196. Device Information Tool also leads on price ($0.99 vs $2.99). On update cadence, ads, in-app purchases and device support there is nothing between them.

Device Information Tool costs $0.99 and Custom JS & CSS for Safari $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly monthly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Device Information Tool | Custom JS & CSS for Safari |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/custom-js-and-css-for-safari/id6776793703/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | — | Paid |
| Best chart rank | **#11** | #196 |
| Size | 7 MB | 10 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Kudit LLC](https://appshunter.io/developer/284146896) | [Alfredo Grassau](https://appshunter.io/developer/1564157928) |

## What reviewers say

### Device Information Tool

[App page](https://appshunter.io/ios/app/device-information-tool/id6736626499)

**Currently charting:** #11 Top Paid · Developer Tools, #196 Top Grossing · Developer Tools (US App Store)

**Features:** Vision Pro support

**In-app purchases:** none


### Custom JS & CSS for Safari

[App page](https://appshunter.io/ios/app/custom-js-and-css-for-safari/id6776793703)

**Currently charting:** #196 Top Paid · Developer Tools (US App Store)

Personalize your web browsing experience by injecting custom JavaScript and CSS into any website. Automate tasks, apply visual tweaks, and manage userscripts directly within Safari.

**Highlights:** Add custom JavaScript, Add custom CSS, Site-specific rules, Userscript manager, iCloud sync, Privacy-first design

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

**In-app purchases:** none


## Frequently asked questions

### Is Device Information Tool free?

Device Information Tool costs $0.99, with no in-app purchases.

### Is Custom JS & CSS for Safari free?

Custom JS & CSS for Safari costs $2.99, with no in-app purchases.

### Do Device Information Tool or Custom JS & CSS for Safari have ads?

Neither Device Information Tool nor Custom JS & CSS for Safari shows ads.

### Which is updated more often, Device Information Tool or Custom JS & CSS for Safari?

Device Information Tool ships an update monthly, and Custom JS & CSS for Safari monthly. Most recently, Device Information Tool was updated on October 25, 2026 and Custom JS & CSS for Safari on October 25, 2026.

### Which is more popular, Device Information Tool or Custom JS & CSS for Safari?

Device Information Tool currently peaks at #11 in the App Store charts, and Custom JS & CSS for Safari at #196. Chart position reflects recent download velocity rather than total install base.

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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.*