Comparison

Device Kit vs Larktun

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Device Kit

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
Read full description

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!

About

Larktun

Features
Read full description

Larktun is a private networking and remote access app designed for personal users, developers, IT administrators, and networking enthusiasts. With Larktun, your iPhone or iPad can securely join your private network and access your home computer, NAS, server, router, development machine, or office devices anytime, anywhere. You can complete networking, device discovery, remote access, and remote control directly inside the app. 【App-Based Private Networking】 Traditional networking tools often require system-level VPN configuration, which may affect other VPN, proxy, or network tools. Larktun uses an app-based private networking approach: No system profile installation required No occupation of the system VPN channel No conflict with other proxy or network tools Access private network devices directly from the app Better suited for iPhone and iPad remote access 【Main Features】 1. Secure Private Network Access After signing in, your iPhone or iPad becomes part of your private network. Wherever you are, as long as you have internet access, you can connect to your devices as if you were on the same local network. Multiple accounts are supported, allowing you to switch between home networks, development environments, remote office networks, and operations management scenarios. 2. Smart Discovery and Home Network App Center Larktun supports smart discovery to help you quickly find devices and common services in your private network, reducing the need to manually enter IP addresses, ports, and protocols. You can discover NAS devices, servers, Windows PCs, routers, Web services, SSH services, RDP services, and more. For home users, Larktun can also serve as a home network app center, providing centralized access to computers, NAS devices, routers, media services, smart home services, and self-hosted applications. 3. Built-in Remote Access Toolbox Larktun includes commonly used remote access tools, so you do not need to install multiple third-party apps. SSH Terminal: Access Linux servers, routers, NAS devices, and development machines with password or key authentication. SFTP File Management: Upload, download, rename, and edit remote files. Built-in Web Browser: Access NAS dashboards, OpenWrt, Home Assistant, self-hosted websites, and internal web systems. RDP Remote Desktop: Connect to Windows computers directly inside the app. WebRTC Remote Control: Remotely control computers through the built-in WebRTC capability. 4. Multi-Tab and Detachable Tabs Larktun supports multi-tab workflows. You can open multiple SSH, RDP, Web, or remote control sessions and quickly switch between devices and services. On iPad, SSH and RDP tabs can also be detached, making remote sessions more flexible for multitasking. 5. External Display Support Larktun supports external display usage. RDP and WebRTC remote control can work with an external monitor to provide a larger workspace and a more desktop-like remote experience on iPad. 6. Device Overview View the status of devices in your private network, add device notes, search quickly, and start SSH, SFTP, Web, RDP, or remote control sessions directly from the device list. 7. Security Protection Larktun is built on modern encrypted networking technology. Only authenticated devices can join your private network, and data transmission is protected by encryption, helping reduce public exposure and unauthorized access risks. Larktun keeps your devices securely online and always within reach. Privacy Policy: https://larktun.com/legal/privacy-policy Service Terms: https://larktun.com/legal/terms-of-service Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Device Kit4 screens
Larktun4 screens

Verdict

The call

The clearest difference is iOS requirement: Larktun at 15.0 against Device Kit's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Device Kit sells 4 in-app purchases, starting at $3.99 per month and Larktun sells 1 in-app purchase, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Device Kit ships an update every 10 days, Larktun every 2 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard1 real difference · 9 level
Device Kit versus Larktun: the parameters behind the verdict, then further details
ParameterDevice KitLarktun
PriceFreeFree
Rating4.9 (89 ratings) — better—
Positive reviews77.4% of reviews—
Number of ratings89 — better—
Update frequencyEvery 10 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size36 MB40 MB
Age rating4+17+
DeveloperShuyang Fan Ziyang Software Development Studio (Individually Owned Business)宁波弦域网络科技有限公司

In-app purchases

4 purchases

Device Kit

Subscriptions2
  • Monthly subscription$3.991 Month
  • Yearly subscription$7.991 Year
One-time2
  • Lifetime Membership$12.99
  • Lifetime Membership$14.99
1 purchases

Larktun

Subscriptions1
  • Larktun Annual Subscription$19.991 Year

Questions

Is Device Kit free?
Device Kit is free to download, with in-app purchases available.
Is Larktun free?
Larktun is free to download, with in-app purchases available.
Do Device Kit or Larktun have ads?
Neither Device Kit nor Larktun shows ads.
Which is updated more often, Device Kit or Larktun?
Device Kit ships an update every 10 days, and Larktun every 2 weeks. Most recently, Device Kit was updated on October 25, 2026 and Larktun on October 24, 2026.

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