AfterLid

Product Introduction

1. Definition: AfterLid is a native macOS menu bar utility application designed for intelligent power management. It functions as a guarded power companion that allows users to override the default sleep behavior of their MacBook when the lid is closed, enabling long-running local processes to continue within strict safety boundaries.
2. Core Value Proposition: AfterLid exists to solve the fundamental conflict between a MacBook's portable, sleep-focused design and the need for it to perform unattended, resource-intensive tasks. Its core value is enabling lid-closed operation for MacBook for tasks like local AI model inference, large file downloads, and software builds, while implementing non-negotiable battery protection, thermal management, and session limits to prevent hardware damage or data loss.

Main Features

1. Guarded Power Modes: AfterLid provides three distinct power states. Sleepy maintains normal macOS sleep behavior. Awake keeps the Mac and display on while the lid is open, allowing manual display deactivation. Always On is the flagship feature, a session-based mode that keeps the system awake with the lid closed and display off, actively guarded by multiple hardware safeguards.
2. Multi-Layer Safety Engine: This is the core technical differentiator. The Always On mode is not a simple "disable sleep" command. It operates a continuous monitoring system that checks: Battery Level (stops at 30% when unplugged), Thermal State (stops under serious/critical pressure), App Heartbeat (stops if the AfterLid process fails), and a Session Timer (hard stop at 8 hours). This ensures safe unattended Mac operation.
3. Cross-Device Status & Control: AfterLid comprises a macOS app and companion iOS/Android apps. The free tier allows remote Mac status monitoring from a phone, displaying live battery, thermal state, and active mode. The Pro tier adds remote power mode switching, enabling users to initiate or stop an Always On session from anywhere.
4. Local AI & Provider Integration: AfterLid recognizes local AI workloads (e.g., Ollama, LM Studio) as a primary use case. It can optionally connect to AI provider APIs (like OpenAI, Anthropic) solely to read usage metrics (e.g., token consumption). Credentials are stored locally in the macOS Keychain and are not transmitted to AfterLid's servers, providing visibility into resource usage without handling sensitive prompt data.

Problems Solved

1. Pain Point: The inability to run lengthy processes on a MacBook after closing the lid without resorting to insecure, all-or-nothing terminal commands like caffeinate or third-party apps lacking hardware safeguards, risking battery drain, overheating, or indefinite operation.
2. Target Audience: Software Developers needing builds/containers to run; Creative Professionals (video editors, 3D artists) rendering exports; Researchers & Data Scientists running local LLMs or models; IT Pros & Power Users managing backups, syncs, or remote access sessions; anyone requiring unattended Mac task completion.
3. Use Cases: Letting a Docker build or Xcode compilation finish overnight; allowing a Final Cut Pro render or Blender export to complete; keeping a Time Machine backup or rsync transfer uninterrupted; maintaining a local development server accessible for testing; running a fine-tuning job on a local LLM like Llama 3; continuing a large torrent download or cloud sync.

Unique Advantages

1. Strengths & Limitations (Pros & Cons):

   • Pros: Unmatched focus on hardware safety for MacBooks, making it the most responsible choice for lid-closed operation. Clean, native menu-bar integration. The free tier is remarkably functional, covering all safety features and remote monitoring. Transparent privacy model for provider connections.
   • Cons: The 8-hour session limit, while a safety feature, may be restrictive for extremely long tasks (e.g., multi-day simulations). Requires creating an account for phone pairing. Primarily manages system availability, not the individual tasks themselves (no built-in job scheduler or failure restart).

2. Key Alternatives & Differentiation:

   • Terminal caffeinate command: Free and built-in, but binary and unsafe. It prevents all sleep indefinitely until manually stopped, with no battery or thermal protection. AfterLid differentiates with a granular, safety-first GUI and automatic stop conditions.
   • Amphetamine (App Store): A powerful, popular free utility. It offers extensive scheduling and trigger-based keep-awake options. Differentiation: Amphetamine is more feature-rich for customizable awake sessions but is less explicitly designed and marketed around the specific, guarded use case of lid-closed operation with enforced limits. AfterLid’s philosophy is "guarded by default."
   • KeepingYouAwake (Open Source): A simple menu-bar app that mimics Amphetamine's core. It's free and open-source. Differentiation: Similar to Amphetamine, it lacks AfterLid's dedicated focus on the cross-device status/control ecosystem and the bundled narrative around local AI task management and provider insights.

Frequently Asked Questions (FAQ)

1. Is it safe to use AfterLid with my MacBook lid closed? Yes, when using the Always On mode, it is designed specifically for this. Safety is its primary design goal, with enforced stops for low battery (30%), high temperature, and maximum session duration (8 hours), making it safer than manual terminal commands.
2. What's the difference between AfterLid's Awake and Always On modes? Awake mode requires the MacBook lid to be open; it keeps the system and display on but lets you turn the display off manually. Always On mode is designed for closed-lid operation; it turns the display off and keeps the system running within the guarded session limits.
3. Can I use AfterLid to run tasks overnight or for multiple days? The Always On session has a maximum continuous runtime of 8 hours for safety. For multi-day tasks, the session will stop at this limit, and the Mac will sleep. You would need to remotely or manually start a new session, which is intentional to prevent indefinite, unattended operation.
4. Does AfterLid work when my Mac is running on battery? Yes, and this is where its battery protection feature is critical. In Always On mode, if the Mac is unplugged, the session will automatically and safely stop when the battery reaches 30%, preserving battery health and preventing a full discharge.
5. What does the Pro version add over the free version? The free version includes all Mac power modes (Sleepy, Awake, Always On) and all hardware safeguards, plus remote status viewing on your phone. The Pro version adds the key feature of remote control, allowing you to switch between Sleepy, Awake, and Always On modes from your mobile device, along with support for multiple AI provider connections and character pack creation tools.