Lifestack vs Todo.is

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.

Todo.is is a web-based to-do list and task manager that uses natural language and voice input to create tasks, notes, and projects. You describe what you need in plain words, and the app turns that into organized items with subtasks, checklists, and project folders.

Most checklist apps make you fill out forms field by field. Todo.is leans on AI task creation and natural language processing so you spend less time structuring lists and more time doing the work. The interface stays lightweight with drag-and-drop ordering, dark mode, and a layout that works on mobile browsers as well as desktop.

It fits students tracking assignments, freelancers juggling client work, and small teams that want shared projects without a heavy project management suite. Google Sign-In handles account access, and Paddle checkout on the site signals paid upgrades beyond the free tier.