# Thermals vs Dev Utils

The clearest difference is rating: Dev Utils at 4.7 against Thermals's 4.5. Dev Utils also leads on review sentiment (92% vs 83%) and ratings volume (101 vs 28). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Dev Utils holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 28 and 101 respectively. Written reviews point the same way: 83% of Thermals's written reviews are positive against 92% of Dev Utils's.

Thermals ships an update every 3 months, Dev Utils every 4 months. The most recent releases landed on September 27, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Thermals | Dev Utils |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (28 ratings)](https://appshunter.io/ios/app/thermals/id1567050762/reviews) | **[4.7 (101 ratings)](https://appshunter.io/ios/app/dev-utils/id6444063249/reviews)** |
| Number of ratings | 28 | **101** |
| Positive reviews | 83.3% of reviews | **92.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 3 MB | 12 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [George Garside](https://appshunter.io/developer/815604170) | [Ryan Fielder](https://appshunter.io/developer/1563352665) |

## What reviewers say

### Thermals

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

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


### Dev Utils

[App page](https://appshunter.io/ios/app/dev-utils/id6444063249)

This app provides mobile developers with essential tools to streamline their workflow. It offers timely notifications for OS and Xcode releases, accessibility features, device information, and a reference for HTTP status codes. Customize your experience with themes and app icons.

**Highlights:** OS and Xcode release notifications, System font and color comparison, Device information lookup, HTTP status code reference, Light/dark themes, Customizable app icons

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Very useful app
- 👍 Good device info
- 👍 Helpful for developers
- 👍 Excellent UI/UX
- 👍 User-friendly

**What reviewers complain about**

- 🐛 Needs update for releases
- 🐛 Data not up-to-date
- 🐛 Potential privacy concerns
- 🐛 Accusations of hacking
- 🐛 Blocked on M series Macs

**Reported bugs**

- Unknown errors
- Find my iPhone error
- Apple ID locked
- Privacy concerns
- Being attacked

**Requested features**

- Update release notes/version numbers
- Adapt to iOS 26 and dark icon
- Update data promptly
- Allow development usage
- More access to watch design UI


## Frequently asked questions

### Is Thermals free?

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

### Is Dev Utils free?

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

### Which has better reviews, Thermals or Dev Utils?

Dev Utils is rated higher. Thermals averages 4.5 out of 5 from 28 ratings, while Dev Utils averages 4.7 from 101 ratings.

### Do Thermals or Dev Utils have ads?

Neither Thermals nor Dev Utils shows ads.

### Which is updated more often, Thermals or Dev Utils?

Thermals ships an update every 3 months, and Dev Utils every 4 months. Most recently, Thermals was updated on September 27, 2026 and Dev Utils on September 28, 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.*