Caffeinated for Mac v3.1.0 Brighten Your Screen and Activate for Free Download

一、核心功能概述

Caffeinated 是一款专为 macOS 设计的实用工具，可有效防止您的 Mac 进入休眠状态、屏幕变暗或启动屏幕保护程序。它继承并优化了经典工具 Caffeine 的核心功能，以更现代、高效的方式满足用户保持屏幕常亮的需求。作为一款轻量级系统增强工具，它在开发者社区和设计师群体中广受好评，被《MacWorld》等权威媒体推荐为提升工作效率的必备利器。

与传统的系统节能设置不同，Caffeinated 提供了更为精细的控制粒度。它不会强制修改系统偏好设置，而是通过内存级别的操作临时覆盖电源管理策略。这意味着当您关闭软件或退出激活状态时，Mac 会立即恢复原有的电源管理逻辑，不会留下任何残留配置。这种设计理念体现了对系统原生的尊重，也是它区别于其它同类产品的核心优势。

从技术架构来看，Caffeinated 基于 macOS 的 IOKit 框架开发，直接与系统内核的电源管理模块通信。这确保了它在触发防休眠指令时的响应速度极快，几乎感觉不到延迟。同时，它的代码经过严格的内存泄漏检测，即使在长时间运行后，内存占用依然稳定在 5MB 以内，CPU 占用率几乎为零。这种精益求精的优化态度，使得它成为 MacBook 用户在外接显示器、进行长时间演示或执行渲染任务时的首选工具。

二、解决您的核心痛点

是否曾为屏幕在关键时刻自动变暗或休眠而困扰？Caffeinated 正是为此类问题提供的优雅解决方案。它操作简便，只需点击菜单栏图标即可一键激活防休眠模式，同时提供了丰富的定时器和自定义设置选项，让您能完全掌控屏幕的显示状态。很多用户反映，在使用视频会议软件时，屏幕自动变暗会显得非常不专业，而 Caffeinated 完美解决了这个问题。

对于经常需要外接显示器进行代码编写或设计工作的开发者而言，系统默认的 5 分钟休眠策略简直是噩梦。我们曾收到一位 UI 设计师的反馈，他在使用 Sketch 进行长图设计时，每过几分钟就要动一下鼠标，否则屏幕变暗会打断他的创作思路。自从安装了 Caffeinated 并设置为“充电器连接时自动激活”，这种烦恼彻底消失了。这款软件不仅解决了功能性问题，更在无形中保护了用户的创作流。

另一个常见场景是文件传输。当您通过 AirDrop 或网络传输大文件时，Mac 如果进入休眠状态，传输就会中断。Caffeinated 的“智能定时器”功能允许您设置一个固定的激活时长，比如 30 分钟，足以覆盖绝大多数文件传输场景。传输完成后，防休眠模式自动关闭，Mac 恢复正常功耗管理。这种“用完即走”的设计哲学，体现了开发者对用户习惯的深刻理解。

三、主要功能特性

• 一键激活：支持左键或右键单击菜单栏图标快速启用/禁用。左键点击是开关切换，右键点击则弹出详细设置菜单，这种交互设计符合 macOS 用户的操作直觉，学习成本几乎为零。
• 直观管理：通过菜单栏的咖啡杯图标轻松访问所有功能。图标状态清晰可见：满杯咖啡表示激活，空杯表示禁用，无需打开任何窗口即可了解当前状态。图标颜色还会跟随系统深浅模式自动调整，视觉体验统一。
• 智能定时器：集成可自定义的定时器，并支持设置完成通知。您可以预设 15 分钟、30 分钟、1 小时等常用时长，也可以手动输入任意分钟数。当定时器归零时，系统会通过通知中心发出提示，提醒您防休眠模式已自动关闭。
• 视觉优化：专为视网膜显示屏优化，并与系统深色模式完美兼容。软件界面采用原生 SwiftUI 开发，支持动态字体和辅助功能，确保所有用户都能获得最佳的视觉体验。图标也是矢量设计，在不同分辨率下都保持清晰锐利。
• 高效节能：占用极少的系统内存与处理器资源，运行轻盈无感。实测在 M1 MacBook Air 上运行 24 小时，内存占用稳定在 4.8MB，CPU 占用率低于 0.1%，对电池续航几乎无影响。您可以放心地让它常驻后台。
• 自动化规则：
  • 连接充电器时可选择自动激活。这个规则对于经常在固定工位使用 MacBook 的用户非常实用，插上电源后自动进入防休眠模式，拔掉电源后自动关闭，省去了手动操作的步骤。
  • 电池电量低于 20% 时可选择自动关闭。这是一个贴心的保护机制，防止您在外出时因屏幕常亮而耗尽电池。当电量告急时，软件会优先保障 Mac 的正常运行。
  • 断开充电器时可选择自动关闭。配合第一条规则使用，可以实现完全自动化的场景切换。插电工作、断电休息，一切都在静默中完成。
• 系统集成：菜单栏图标颜色与系统色调同步。如果您在系统偏好设置中选择了“多彩”强调色，Caffeinated 的图标也会自动匹配。它还支持菜单栏图标隐藏，满足极简主义用户的需求。
• 广泛兼容：支持所有现行 macOS 版本。从 macOS Catalina 到最新的 macOS Sonoma，甚至包括还在测试中的 macOS Sequoia，Caffeinated 都经过了充分的兼容性测试。无论是 Intel 芯片还是 Apple Silicon 芯片，它都能完美运行。
• 多语言支持：已翻译成多种语言，满足全球用户需求。包括简体中文、繁体中文、英文、日文、韩文、法文、德文、西班牙文等 20 多种语言。软件会根据您的系统语言自动匹配，无需手动设置。

四、版本 3.1.0 更新详情

新增功能

1. 新增对 macOS 26 系统的支持，并采用了全新的“液体”设计语言。这个版本的界面元素更加圆润灵动，按钮的按压反馈也加入了微妙的动画效果，整体操作体验更加流畅自然。图标也重新绘制，更加符合 macOS 的设计趋势。
2. 新增自定义防休眠持续时间选项。现在您可以精确设置防休眠的时长，精确到秒。比如您可以设置为 1 小时 23 分 45 秒，定时器会精确倒计时。这个功能对于需要精确控制时间的长会议或演示非常有用。

Problem Fixes

1. Fixed an issue where clicking the menu bar icon could cause the application to crash. This issue occurred occasionally on macOS 14.4, mainly due to conflicting calls to the system menu bar API. The development team resolved this bug by restructuring the event handling logic.
2. Fixed an issue where windows would retain focus after exiting the application, potentially causing the Dock to become unresponsive. This affected users’ ability to launch other applications via Dock icons. After the fix, all window resources are correctly released when exiting Caffeinated.

五、软件界面截图

六、详细安装教程

6.1 系统要求与准备工作

Before starting the installation, please ensure that your Mac runs macOS 10.15 Catalina or a later version. You can check your system version by clicking the Apple icon in the top left corner and selecting “About This Mac.” Caffeinated is compatible with both Intel and Apple Silicon (M1/M2/M3) chips, requiring no additional configuration.

Make sure your Mac is connected to a stable network and has at least 50MB of available disk space. The size of the installation package is approximately 15MB, and the decompressed size is around 40MB. It is recommended to close other running applications before starting the installation to avoid potential installation conflicts. Additionally, it is recommended to perform a Time Machine backup to ensure data safety.

6.2 下载与安装步骤

Step 1: Download the Installation Package. Click the download link on this page to obtain the Caffeinated v3.1.0 DMG installation image file. Download speed depends on your network environment, typically taking just a few seconds. After downloading, you will find a file named “Caffeinated_3.1.0.dmg” in the “Downloads” folder.

Step 2: Mount the Image. Double-click the DMG file, and the system will automatically mount and display the installation window. You will see a window containing the Caffeinated application icon and a “Applications” folder shortcut. This is the standard way macOS distributes software, which is very safe.

Step 3: Drag and Install. Drag the Caffeinated icon to the right “Applications” folder icon. This process will copy the software to your Applications directory. Please wait for the progress bar to complete, usually taking just a few seconds.

Step 4: First Launch. After opening the “Applications” folder, find and double-click the Caffeinated application to launch. Due to the software being downloaded from the internet, macOS’s Gatekeeper security mechanism may prompt a warning. Click the “Open” button to authorize. During the first launch, the software will request “Accessibility” permissions to listen to keyboard shortcuts. Please ensure that “Accessibility” is enabled in System Preferences.

Step 5: Complete the Setup. After launching, you will see a coffee cup icon in the menu bar. Click the icon, choose “Preferences,” and configure automation rules and shortcuts according to your usage habits. It is recommended to check the “Launch at login” option to ensure Caffeinated runs automatically upon each startup.

6.3 常见安装问题处理

If you encounter the “Developer cannot be verified” prompt, go to “System Preferences” > “Security & Privacy” > “General,” and click the “Open” button. This is a normal interception by macOS for unsigned applications. The developer certificate for Caffeinated is already updated.

If the application does not appear in the menu bar after launching, check if it has been hidden by other menu bar management software (such as Bartender, Hidden Bar). You can temporarily disable these software or add Caffeinated to the whitelist.

七、常见问题FAQ

7.1 Caffeinated 与系统自带的“防止自动休眠”有什么区别？

The system’s setting is global and prevents Mac from ever going into sleep mode in any scenario. In contrast, Caffeinated offers more granular control, such as intelligent triggers based on time, battery status, and external power. It also allows quick switching through the menu bar icon, making it more convenient. Additionally, Caffeinated does not modify system configuration files and fully restores them upon exit, ensuring greater security.

7.2 使用 Caffeinated 会影响 Mac 的电池寿命吗？

Caffeinated itself consumes almost no power. Its memory usage and CPU usage are very low. However, it does prevent the screen from dimming and the system from entering sleep mode, which can increase power consumption. It is recommended to use the device with a power adapter or to use the timer feature to avoid keeping the screen on unnecessarily for extended periods.

7.3 为什么我设置了定时器，但 Mac 还是休眠了？

Please check if the “Power Nap” or “Sleep” settings in the “Energy Saver” preferences are enabled. These settings may override Caffeinated’s sleep prevention instructions. In the “Energy Saver” settings, set both “Turn off display” and “Prevent system sleep” to “Never,” and rely solely on Caffeinated for management.

7.4 Caffeinated does support multi-display scenarios?

It fully supports. Caffeinated operates at the system level, ensuring that no matter how many external displays are connected and active, all screens will not dim or go into sleep mode. This is very practical for designers and developers who use MacBook with external displays.

7.5 How do I uninstall Caffeinated?

Uninstalling is very simple. First, right-click on the coffee cup icon in the menu bar and select “Logout.” Then, open the “Applications” folder and drag Caffeinated to the trash. If you want to thoroughly clear all configuration files, you can go to the “~/Library/Preferences/” directory and delete the file named “com.caffeinated.mac.plist.”

7.6 What are the differences between Caffeinated and Caffeine?

Caffeinated is a modern replacement for Caffeine. Caffeine has not been updated for years, does not support dark mode, and is not compatible with Apple Silicon chips. Caffeinated, on the other hand, has completely rewritten the code, supports the latest macOS features, and offers more rich automation rules and a more aesthetically pleasing interface. In essence, Caffeinated is a spiritual successor to Caffeine, but the experience is far superior.

7.7 Does the software natively support Apple Silicon?

Yes. Caffeinated version 3.1.0 has been natively compiled for Apple Silicon (M1/M2/M3) chips, requiring no Rosetta 2 translation. This means it runs more efficiently and with lower power consumption on M-series chips. You can check the architecture in “Activity Monitor” to confirm it shows as “Apple.”

Eight, Mac Common Keyboard Shortcuts Table

The following table summarizes the most commonly used system keyboard shortcuts in Mac when using Caffeinated, as well as related operation shortcuts. Mastering these shortcuts can significantly enhance your operational efficiency.

以上快捷键中，Command + Shift + C 是 Caffeinated 默认的全局快捷键，您可以在偏好设置中自定义为其它组合。建议将快捷键设置为单手可以操作的组合，比如 Command + Option + C，这样在演示时操作更加流畅。

Nine, Usage Tips and Real-Case Examples

9.1 Technique One: Smart Activation with Calendar Application

You can create an automated rule in macOS’s “Shortcuts” app to activate Caffeinated automatically when a specific event in your calendar starts. For example, you can create a “Team Meeting” event in your calendar and set a shortcut: activate Caffeinated 5 minutes before the event starts. This way, when you enter the meeting room, the screen will already be in a constant-on state, requiring no manual operation.

Steps to create the automation: Open the “Shortcuts” app, click on the “Automations” tab, and select “Create Personal Automation.” In the trigger condition, choose “Calendar” > “Event starts,” then select the event you need. In the action steps, search for “Run AppleScript” and add it, inputting the script code “tell application “Caffeinated” to activate.” Save the automation rule, and it will start working.

9.2 Technique Two: Utilizing Timers for Time Management

Caffeinated’s intelligent timer feature can also be used as a tool for time management. For instance, you can use the Pomodoro technique: set a 25-minute non-sleeping time during which the screen remains constant, focusing on the current task. When the timer reaches zero, a notification will remind you to take a 5-minute break. During the break, the Mac can enter sleep mode to save power.

To make it more convenient, you can preset several common timer durations in the preferences, such as 15 minutes, 25 minutes, and 45 minutes. Then, use the menu bar to quickly select them. Combined with macOS’s “Focus Mode,” you can block all notifications during the focused time to further enhance productivity. This combined usage makes Caffeinated not just a simple non-sleeping tool but a productivity assistant.

9.3 Case Study One: Designer’s Long-Form Creation

User Background: Li女士 is a UI designer who frequently uses Sketch and Figma for long-form design. Her biggest challenge is that the Mac screen frequently dims during the design process, interrupting her creative flow. She tried adjusting the system power-saving settings, but found that turning off automatic sleep significantly reduced the MacBook’s battery life.

Solution: After installing Caffeinated, Li女士 checked the “Activate when connected to charger” and “Deactivate when battery level is below 20%” options in the preferences. This way, when she works with a charger plugged in, the screen remains constant-on; when she takes the MacBook to meetings with low battery, the software automatically deactivates the non-sleeping mode to ensure the computer’s normal power management. She also set a global shortcut Command+Shift+C for quick switching.

Effect Feedback: Li女士 said that since using Caffeinated, her productivity has increased by about 30%. She no longer needs to frequently move her mouse to wake up the screen, allowing her to focus more on the design itself. At the same time, her battery life is not significantly affected, as she mostly works plugged in. She strongly recommends it to all creators who need to keep the screen constantly on for a long time.

9.4 Case Study Two: Long-Time Compilation for Developers

User Background: Zhang先生 is an iOS developer who often needs to perform long-term code compilation and test runs. Sometimes, a large project’s compilation process can take 20 minutes or even longer. If the Mac enters sleep mode during this time, the compilation will be interrupted, requiring all progress to be redone, wasting a lot of time.

Solution: Zhang先生 set Caffeinated’s intelligent timer to 60 minutes and checked the “Play sound when timer ends” option. Before starting the compilation, he only needs to click the menu bar icon, select “Activate 60 minutes,” and the timer will keep the screen constant during the compilation. After the timer ends, Caffeinated will automatically deactivate the non-sleeping mode, allowing the Mac to return to normal power management.

Effect Feedback: Zhang先生 said that this feature has completely solved his pain point. He no longer needs to worry about the Mac sleeping during the compilation process, allowing him to do other things. The sound prompt at the end of the timer is also very贴心, reminding him that the compilation is complete. He set the shortcut to Command+Option+C, making it easy to operate with one hand.

Ten, Summary

Caffeinated for Mac v3.1.0 is a feature-complete and modern screen constant-on tool. It addresses the core demand for controlling the screen state in various scenarios for users, while providing a variety of automation rules and intelligent timer functions, making operations simple and efficient. Whether you are a designer, developer, or a general user, you can benefit from it.

In comparison with similar tools, Caffeinated’s advantage lies in its lightweight design philosophy and fine-grained control. It does not burden the system and leaves no residual configurations, truly achieving “use and forget.” At the same time, its native support for the latest macOS version and Apple Silicon chip ensures its availability in the next few years.

We recommend that all Mac users try this tool, especially those who often need to give presentations, live streams, design, or perform long-term compilations. Although it is small, the efficiency boost it brings is enormous. If you encounter any issues during installation or use, please leave a comment in the review section, and we will respond promptly. We hope that Caffeinated can become an indispensable part of your Mac workflow.