# CoolGuard vs Phone Temperature Checker

The clearest difference is monetization model: CoolGuard at free against Phone Temperature Checker's free with in-app purchases. CoolGuard also leads on update cadence (weekly vs every 3 weeks). Phone Temperature Checker's advantage is ratings volume (3 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. CoolGuard sells 3 one-off in-app purchases and Phone Temperature Checker sells 2 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for CoolGuard against 5.0 for Phone Temperature Checker. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

CoolGuard ships an update weekly, Phone Temperature Checker every 3 weeks. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | CoolGuard | Phone Temperature Checker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/coolguard/id6801791826/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/phone-temperature-checker/id6804717005/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 5 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Norbert Pentek](https://appshunter.io/developer/1884922906) | [Ha Quyen Ho Thi](https://appshunter.io/developer/1886076061) |

## What reviewers say

### CoolGuard

[App page](https://appshunter.io/ios/app/coolguard/id6801791826)

This app monitors your phone's temperature, providing real-time heat levels and alerts to prevent performance issues and battery aging. It also functions as a customizable night clock with alarms and displays local weather information.

**Highlights:** Live heat level monitoring, Heat trend and log with map, Customizable alerts and cooling tips, Night clock with sleep mode, Multiple alarms with system integration, Outdoor weather display, Lock screen and Dynamic Island widgets

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small tip | $0.99 | one-time |
| Medium tip | $2.99 | one-time |
| Large tip | $9.99 | one-time |


### Phone Temperature Checker

[App page](https://appshunter.io/ios/app/phone-temperature-checker/id6804717005)

Monitor your device's thermal status and receive one-tap cooling assistance. Optimize performance during gaming, charging, or heavy usage with live system insights and customizable cooling profiles.

**Highlights:** Live system status monitoring, Temperature estimation (°C/°F), CPU, memory, and battery insights, Home Screen widgets, Live Activity / Dynamic Island integration, Multiple cooling profiles, Smart cooling tips

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CPU Cooler Pro Weekly | $3.99 | per 7 days |
| Phone Cooler Pro Yearly | $34.99 | per year |


## Frequently asked questions

### Is CoolGuard free?

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

### Is Phone Temperature Checker free?

Phone Temperature Checker is free to download, with in-app purchases available.

### Which has better reviews, CoolGuard or Phone Temperature Checker?

CoolGuard and Phone Temperature Checker are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do CoolGuard or Phone Temperature Checker have ads?

Neither CoolGuard nor Phone Temperature Checker shows ads.

### Which is updated more often, CoolGuard or Phone Temperature Checker?

CoolGuard ships an update weekly, and Phone Temperature Checker every 3 weeks. Most recently, CoolGuard was updated on October 6, 2026 and Phone Temperature Checker on October 8, 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.*