Romulus
The free to-do list app where the AI does some of the list.
Romulus is a free, open-source to-do list app for Windows, macOS, Linux and Android. Your own to-dos sit on one tab. On the next, an AI agent works through the tasks you hand it and asks you before anything final.
A real to-do list first
- Human. Your own to-dos: due dates, times, tags, subtasks, repeats, drag to reorder, search.
- Agent. Tasks the AI does, with a live view of its work, its questions and its results.
- School. Assignments with due dates pulled from Blackboard or D2L.
- Work. A second list, synced with the rest.
- Calendar, Notes, Hours. The month with Google and Microsoft calendars, a board of notes, hours per day.
- Finance. Accounts, bills, subscriptions, net worth and stock prices, encrypted on your computer.
The same list on your computer and phone
Every tab syncs between the desktop app and the Android app. Sync is free up to 5 MB, which a typical list barely touches, and one button encrypts it end to end so the server holds only ciphertext.
Then hand some of it off
Move a task to the Agent tab and it gets done: groceries, shopping, flights, forms, email drafts, research. It works with Claude, ChatGPT, Gemini, OpenRouter, free tiers like Grok and Groq, or your own model through Ollama, and it never buys, sends or books anything until you say yes.
Questions
Is there a free to-do list app with AI built in?
Yes. Romulus is a free, open-source to-do list app with an AI agent built in, for Windows, macOS, Linux and Android. You keep your own to-dos, and hand the ones you want done to the Agent.
What is the difference between an AI to-do list and a regular one?
A regular to-do list holds tasks. In Romulus, the Agent tab also does them: it browses, fills forms, compares prices and builds carts, then asks you before anything final.
Does Romulus sync between my phone and computer?
Yes. The desktop app and the Android app share every tab. Sync is free up to 5 MB and can be end-to-end encrypted.
Can I use it as a plain to-do list without an AI?
Yes. The Human, School, Work, Calendar, Notes and Hours tabs work on their own. Connect an AI only when you want the Agent.
Does it work for school?
Yes. The School tab pulls assignments and due dates from Blackboard or D2L calendar links, and the class becomes the tag.
Is there an iPhone version?
Not on the App Store yet. Windows, macOS, Linux and Android have installers; the iPhone build runs from Xcode.
Get it
Free for Windows, macOS, Linux and Android. MIT licensed, and it updates itself.