# Thermals vs HTML Viewer ++

Thermals and HTML Viewer ++ both sit at 4.5 stars, but that hides the real split: 83% of Thermals's written reviews are positive against 0% of HTML Viewer ++'s. Thermals also leads on in-app purchases (none vs 3) and chart position (#196 vs unranked). HTML Viewer ++'s advantage is update cadence (every 2 months vs every 3 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. HTML Viewer ++ sells 3 in-app purchases, starting at $0.99 per 7 days. Thermals asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Thermals against 4.6 for HTML Viewer ++. Both are backed by a comparable volume of ratings — 28 and 48 respectively. Written reviews are what separate them: 83% of Thermals's written reviews are positive against 0% of HTML Viewer ++'s.

Thermals ships an update every 3 months, HTML Viewer ++ every 2 months. The most recent releases landed on September 27, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Thermals | HTML Viewer ++ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (28 ratings)](https://appshunter.io/ios/app/thermals/id1567050762/reviews) | **[4.6 (48 ratings)](https://appshunter.io/ios/app/html-viewer-plus-plus/id6738789687/reviews)** |
| Number of ratings | 28 | **48** |
| Positive reviews | **83.3% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#196** | — |
| Size | 3 MB | 35 MB |
| Requires iOS | 18.6 | **18.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [George Garside](https://appshunter.io/developer/815604170) | [HurryApp LTD](https://appshunter.io/developer/1562864305) |

## What reviewers say

### Thermals

[App page](https://appshunter.io/ios/app/thermals/id1567050762)

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

Monitor your device's thermal state and processor activity to diagnose performance issues. Understand why your phone might be running slowly, charging slowly, or have reduced brightness due to overheating. Export data for further analysis with other development tools.

**Highlights:** Displays device thermal state, Shows active processor count, Monitors device uptime, Troubleshoots performance issues, Helps diagnose slow charging, Identifies brightness limitations, Exports raw data for analysis

**Features:** Apple Watch app

**In-app purchases:** none


### HTML Viewer ++

[App page](https://appshunter.io/ios/app/html-viewer-plus-plus/id6738789687)

Edit and manage website code with an intuitive interface. Import, export, and access your files from anywhere on iOS devices. Ideal for developers and enthusiasts working with HTML and Swift files.

**Highlights:** Intuitive HTML code editor, Import and export Swift files, Seamless collaboration, Access files anywhere, User-friendly interface

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $0.99 | per 7 days |
| Coding Pro | $3.99 | per 7 days |
| Code Pro | $69.99 | per year |


## Frequently asked questions

### Is Thermals free?

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

### Is HTML Viewer ++ free?

HTML Viewer ++ is free to download, with in-app purchases available.

### Which has better reviews, Thermals or HTML Viewer ++?

HTML Viewer ++ is rated higher. Thermals averages 4.5 out of 5 from 28 ratings, while HTML Viewer ++ averages 4.6 from 48 ratings.

### Do Thermals or HTML Viewer ++ have ads?

Neither Thermals nor HTML Viewer ++ shows ads.

### Which is updated more often, Thermals or HTML Viewer ++?

Thermals ships an update every 3 months, and HTML Viewer ++ every 2 months. Most recently, Thermals was updated on September 27, 2026 and HTML Viewer ++ on September 23, 2026.

---

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