# Device Kit: CPU x RAM Monitor — Battery Temp & System Status

> Comprehensive iOS system monitor and utility app with hardware status and tools. (iPhone/iPad app by 子阳 范.)

- Source: https://appshunter.io/ios/app/device-kit-cpu-x-ram-monitor/id6761011882 (this page in markdown: same URL + `.md`)
- Developer: [子阳 范](https://appshunter.io/developer/1879334973)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.90/5 from 49 App Store ratings · 28 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 30 MB
- Languages: American English, Danish, Dutch, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, Malay and 10 more
- Released: 2026-05-14
- Data updated: 2026-09-04
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/device-kit-cpu-x-ram-monitor/id6761011882/reviews.md

## What is Device Kit?

Device Kit — Your iPhone's All-in-One Health Checker, Take Full Control of Your Device in Real Time!

Ever wonder how hot your phone really is? How fast is it charging? Is your CPU about to max out? Is your network being throttled? Device Kit gives you the most intuitive, real-time, and comprehensive answers.

▸▸ Core Monitoring at a Glance ◂◂

CPU Temperature — Real-time device temperature with smart estimates for battery and body temperature. 6-level thermal warning system alerts you before your phone overheats.

CPU Usage — Real-time CPU utilization monitoring with user/system/idle breakdowns, plus historical trend charts to track load changes.

Network Speed — Real-time speed for both Wi-Fi and cellular networks. Monitor upload/download speeds, peak speeds, and daily data usage stats.

Battery Status — Charge level, charging state, low-power mode, thermal status — full battery health insights.

Memory & Storage — Used/total capacity with breakdowns, storage usage percentage — say goodbye to storage anxiety.

▸▸ Dynamic Island & Floating Widgets — Desktop Monitoring ◂◂

Dynamic Island Live Monitor — No need to open the app. While your phone is locked or you're using other apps, the Dynamic Island shows real-time CPU temperature, network speed, and CPU usage with live updates.

Picture-in-Picture Floating Widget — A persistent floating window on your home screen monitors network speed, temperature, and CPU. Drag it anywhere, use it while doing other tasks — true desktop-level monitoring experience.

Motion Tracker on Dynamic Island — While recording motion trajectory, the Dynamic Island displays real-time distance, duration, and speed.

▸▸ Charging Power Detection ◂◂

Real-time Power Estimation — Detects charging power (W) in real time, telling you whether it's slow charging, standard charging, or fast charging.

Charging Speed Rating — Slow / Standard / Fast / Ultra — clear at a glance.

Charging Statistics — Duration, peak power, and total energy charged — a complete charging report.

History Log — Every charging session is automatically saved for later review and comparison.

▸▸ 18 Practical Tools ◂◂

【System Tools】 Flashlight (9 blink modes with brightness adjustment), Haptic Feedback, Multi-Touch Test, Motion Tracker

【Network Tools】 Ping, Telnet, SSH (Pro)

【Utility Tools】 QR Code Generator, Decibel Meter, Password Generator

【Sensor Tools】 Compass, GPS, Gyroscope, Magnetometer, Barometer, Altimeter, Proximity Sensor

【Display Tools】 Color & Brightness Adjustment

【Environment Tools】 Weather (Pro)

▸▸ Home Screen Widgets ◂◂

Home Screen Widgets — Uptime, Weather, CPU, Temperature, Memory, Storage, Clock, Device Info, Quick Actions. Available in Small, Medium, and Large sizes.

Lock Screen Widgets — Weather, Storage, Uptime — check key info without unlocking.

【Auto-Renewable Subscription Terms】

Pro membership is an auto-renewing subscription billed monthly or yearly.

Payment will be charged to your Apple ID account upon confirmation of purchase.

The subscription will automatically renew within 24 hours prior to the end of the current period unless auto-renew is turned off at least 24 hours before the end of the current period.

To cancel, please turn off auto-renewal in Settings > Apple ID > Subscriptions at least 24 hours before the current period ends.

You can manage or cancel your subscription anytime after purchase in your account settings.

Any unused portion of a free trial period (if offered) will be forfeited when you purchase a subscription.

【Privacy Policy & Terms of Service】
Privacy Policy: https://device-kit.pages.dev/private
Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Download Device Kit and keep your device under your complete control!

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly subscription | $3.99 | per month |
| Yearly subscription | $7.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Membership | $14.99 | one-time |
| Lifetime Membership | $9.99 | one-time |


## Recent user reviews (10 of 28)

All indexed reviews: https://appshunter.io/ios/app/device-kit-cpu-x-ram-monitor/id6761011882/reviews.md

### 5/5 — 果断推荐

*2026-08-23*

可以说是手机性能监视器里面最良心的了，作者做的UI实在是简约大气，看着舒服。最关键的是，手机温度支持悬浮窗查看，就冲这个，也值得我打这个五星，刷新时间也可调最快时间也不用会员。比某些软件良心太多，一次性买断的价格也非常划算。良心作者，希望日后这个应用越来越好。

**Developer response:** 非常感谢您的五星支持和如此细致的评价！看到您喜欢我们的UI设计，尤其是觉得悬浮窗温度查看和自由调节刷新时间很实用，我们真的特别开心。

我们一直希望能做一款干净、高效又不给用户添负担的工具，所以坚持把核心功能开放给所有用户，不搞会员套路。您的认可就是对我们最大的鼓励，后续我们也会继续优化细节、增加更多实用功能，争取不辜负这份信任。

再次感谢您的支持，祝您使用愉快！🙌

### 5/5 — 可以

*2026-08-21*

感觉还挺好用，类型很多，温度目前来看是准的

**Developer response:** 您好，非常感谢您的支持与肯定！

看到您觉得好用，而且温度数据也准确，我真的很开心。😊 我会持续优化，提供更多实用的工具类型，让 App 越来越完善。

如果后续有任何建议或疑问，欢迎随时通过 App 内的反馈功能告诉我们。再次感谢您的评价，祝您使用愉快！

### 5/5 — 修复bug非常及时

*2026-08-19*

这款软件一次性买断非常划算 所提出的bug修复时间非常及时 功能强大且完善

**Developer response:** 感谢好评～

### 5/5 — 好用

*2026-08-17*

功能多且实用，用起来很棒！

**Developer response:** 感谢您的好评！ 有使用问题或者建议欢迎您随时反馈

### 1/5 — 不好用

*2026-08-17*

根本不好用，我是充了会员，完全没用，17pro有bug，反馈一两个月也没有解决

**Developer response:** 很抱歉，付费之后没有给到您满意的使用体验。
从评论中我们暂时无法判断您遇到的具体Bug，如果方便，麻烦通过邮箱描述问题表现、触发场景以及iOS系统版本，我们会重点进行排查。感谢您的反馈。
邮箱：fanziyang8@outlook.com

### 5/5 — 相当不错

*2026-08-14*

很好，即使不购买，也有很多免费功能可供使用

**Developer response:** 感谢支持，有使用问题或需求欢迎随时反馈～

### 2/5 — 温度不对

*2026-07-24*

温度是假的 我玩游戏都快烫死了 还是35度 手机带散热器的时候没玩游戏还是35度

**Developer response:** 很抱歉温度读数和你的实际体感偏差明显，影响了使用体验。
我们算法设置32℃为温度下限，当设备空载搭配散热器、处于极低温环境时，数值会固定显示32℃，在日常常温环境下，温度变化曲线具备参考性。
十分感谢你的宝贵反馈，由衷感谢你的包容与体谅。如果还有其他疑问，也欢迎通过App内预留的邮箱联系我们，我们会细致为你解答。

### 5/5 — Very useful.

*2026-07-22*

I’ve tried quite a few system monitoring apps over the years, and Device Kit is one of the better ones. The interface is clean, the information is easy to understand, and it gives you a surprisingly detailed look at your iPhone’s performance without feeling cluttered. I especially like being able to monitor CPU, memory, battery, and network usage in real time, and the widgets make it easy to check everything at a glance. It’s clear that a lot of thought went into both the design and functionality. If you’re someone who likes knowing what’s going on under the hood of your device, this app is definitely worth checking out.

**Developer response:** Thank you so much for taking the time to write such a thorough and thoughtful review! I'm truly glad that Device Kit stands out among the many system monitoring apps you've tried.

It's especially rewarding to hear that you appreciate the clean interface, the easy-to-understand information, and the real-time monitoring for CPU, memory, battery, and network — plus the widgets for quick glances. That's exactly the balance I've been aiming for: powerful but not cluttered.

Your recognition of the thought behind both design and functionality means a lot to me. Knowing that you find it useful for keeping an eye on what's under the hood is the best motivation to keep improving.

If you ever have any suggestions or feature requests, feel free to reach out anytime. Thanks again for your support and recommendation! 😊

### 5/5 — 优秀

*2026-07-22*

小组件和灵动岛是不是24小时会失效？

### 5/5 — 可以好用啊

*2026-07-18*

可以可以部分需要付费但免费的内容已经完全够了非常良心实用

**Developer response:** 谢谢哈  有问题欢迎随时反馈

## Frequently asked questions about Device Kit

### What is Device Kit?

Device Kit is a professional iOS system monitor and utility app that offers comprehensive device status monitoring and a collection of practical tools. It provides real-time insights into your device's hardware performance and includes various helpful utilities.

### What kind of system information does Device Kit provide?

Device Kit monitors CPU usage, frequency, and core count, memory usage, battery health, temperature, cycle count, network speed, latency, data usage, and storage space. It also offers historical performance data trends.

### Can I monitor my device while using other apps?

Yes, Device Kit features a Picture-in-Picture (PiP) mode that allows real-time CPU and network monitoring while gaming or watching videos. You can customize the display content shown in PiP.

### What are the Pro features in Device Kit?

The Pro version unlocks advanced features like system tools (flashlight modes, haptic test), environment tools (weather), network diagnostics (ping), sensor tools (compass, GPS), utility tools (decibel meter, password generator), and display tools (color temperature adjustment).

### How does Device Kit handle subscriptions?

Device Kit offers monthly, yearly, and lifetime membership plans. Subscriptions are auto-renewable and can be managed or canceled through your Apple ID settings. A free trial is included for monthly plans.

### What devices is Device Kit compatible with?

Device Kit is designed for iPhone and iPad devices. It is rated for ages 4 and up, making it suitable for a wide range of users.

### How often is Device Kit updated?

The latest version of Device Kit is 2.0.1, and it was last updated on June 18, 2026. This indicates a recent update and ongoing development.

### Is Device Kit free to use?

Device Kit offers free basic features for users. To unlock all advanced features and tools, users can upgrade to the Pro version through various membership plans.

## Version history (last 5 releases)

### 2.0.6 — 2026-08-19

1. Fixed UI adaptation issues for iOS 27
2. Added auto‑calibration feature for the compass tool
3. Support for deleting individual entries in charging power history
4. Optimized some on‑screen text

### 2.0.5 — 2026-08-10

Fixed known issues and improved stability.
Optimized user experience.

### 2.0.4 — 2026-07-22

Added metric and US unit switching function. Temperature data can be freely switched between Celsius (℃) and Fahrenheit (℉).

### 2.0.3 — 2026-07-17

- New charging power detection with real-time estimation and speed tier
- New travel tracker with background tracking and Dynamic Island support
- New Picture-in-Picture combo monitor for CPU, network, and temperature

### 2.0.2 — 2026-07-02

Optimized the stability of all monitoring functions, refined details for a smoother user experience

## More apps by 子阳 范

- [OutCheck: Ready to Go List](https://appshunter.io/ios/app/outcheck-ready-to-go-list/id6760182005)

All apps by 子阳 范: https://appshunter.io/developer/1879334973

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-04.*