# Device Kit vs OpenHTML

The clearest difference is ratings volume: Device Kit at 87 against OpenHTML's 4. OpenHTML's advantage is update cadence (every 5 days vs every 11 days). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Device Kit sells 4 in-app purchases, starting at $3.99 per month and OpenHTML sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Device Kit against 5.0 for OpenHTML. That said, the two scores are not equally well evidenced: Device Kit has 87 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 79% of Device Kit's written reviews are positive against 71% of OpenHTML's.

Device Kit ships an update every 11 days, OpenHTML every 5 days. The most recent releases landed on October 21, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Device Kit | OpenHTML |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (87 ratings)](https://appshunter.io/ios/app/device-kit-phone-temperature/id6761011882/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/openhtml-html-pdf-and-markdown/id6776524508/reviews)** |
| Number of ratings | **87** | 4 |
| Positive reviews | **78.8% of reviews** | 71.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 5 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 36 MB | 20 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shuyang Fan Ziyang Software Development Studio (Individually Owned Business)](https://appshunter.io/developer/1879334973) | [吉帅 仇](https://appshunter.io/developer/1087837335) |

## What reviewers say

### Device Kit

[App page](https://appshunter.io/ios/app/device-kit-phone-temperature/id6761011882)

Monitor your device's hardware performance in real-time with detailed CPU, memory, and battery usage. Access a suite of practical tools including weather, network diagnostics, and sensors. Visualize historical data with customizable charts and home screen widgets.

**Highlights:** Real-time CPU, memory, and battery monitoring, Visual data charts for performance trends, Picture-in-Picture mode for continuous monitoring, Customizable home screen widgets, Pro Toolbox with system, environment, and network tools, Sensor data including compass and barometer

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $3.99 | per month |
| Yearly subscription | $7.99 | per year |
| Lifetime Membership | $12.99 | one-time |
| Lifetime Membership | $14.99 | one-time |


### OpenHTML

[App page](https://appshunter.io/ios/app/openhtml-html-pdf-and-markdown/id6776524508)

View HTML, Markdown, ZIP web projects, and source files privately on your device. Inspect and export rendered pages offline, diagnose rendering issues, and view code files securely. Designed for developers, students, and anyone needing to inspect web content safely.

**Highlights:** View HTML, Markdown, and source files, Import ZIP archives and web projects, Offline rendering with network access blocked by default, Diagnose rendering and resource issues, Export pages to PDF or long images, Private by default, no accounts or analytics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenHTML Pro | $2.99 | one-time |


## Frequently asked questions

### Is Device Kit free?

Device Kit is free to download, with in-app purchases available.

### Is OpenHTML free?

OpenHTML is free to download, with in-app purchases available.

### Which has better reviews, Device Kit or OpenHTML?

OpenHTML is rated higher. Device Kit averages 4.9 out of 5 from 87 ratings, while OpenHTML averages 5.0 from 4 ratings.

### Do Device Kit or OpenHTML have ads?

Neither Device Kit nor OpenHTML shows ads.

### Which is updated more often, Device Kit or OpenHTML?

Device Kit ships an update every 11 days, and OpenHTML every 5 days. Most recently, Device Kit was updated on October 21, 2026 and OpenHTML on October 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*