Lifestack vs Mem

Lifestack is a productivity planner that builds your daily schedule around sleep, recovery, and focus instead of empty calendar blocks. It reads wearable and health signals, maps energy peaks and calm periods across your day, and drafts a schedule that places demanding work when you can actually focus.

Most calendar apps treat you like a task executor with unlimited stamina. Lifestack treats energy, meals, and rest as first-class inputs, overlaying focus and calm zones on your calendar so you see when deep work fits and when lighter tasks make sense. That body-first layer is the trade-off: it is narrower than a general project manager, but it connects health data to scheduling decisions most planners ignore.

The product suits professionals juggling meetings and deep work, ADHD users who need external structure around energy swings, and anyone syncing tasks from tools like Trello while trying to protect sleep and meal timing. Apps run on iPhone, Mac, Android, and Chrome, with a desktop Mac download and browser extension for calendar access.

Mem is a productivity workspace for notes, meetings, and research that uses a built-in Mem Agent to organize and recall what you save. You capture ideas by voice, during calls, from the web, or on the go, and Mem tags, links, and indexes notes so you spend less time filing and more time using what you captured.

Compared with folder-first note apps, Mem bets on semantic search and proactive resurfacing instead of manual taxonomy. Deep Search finds notes by meaning, Heads Up pulls related context while you work, and on the $99 per month Proactive plan the agent reaches out in Slack, iMessage, and WhatsApp before commitments slip. That proactive layer is the trade-off: you get less rigid structure than Notion-style databases in exchange for an assistant that watches your inbox of ideas.

Mem targets founders, consultants, researchers, and other knowledge workers who juggle meetings, reading, and scattered captures across tools. Desktop apps on Mac and Windows can record system audio from Zoom, Google Meet, and Teams, while iOS and web clients handle lighter capture. Pro costs $12 per month with a 250 Mem Agent message cap; Proactive removes limits and adds outbound reminders after a 7-day trial.