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Sean Bettsv2.0.0
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sideBar

A personal AI assistant that works with your notes, tasks, files and saved websites across iPhone, iPad, Mac and web.

Sole developer · December 2025–presentVisit project (opens in a new tab)
sideBar on iPad with a note created by the assistant beside the conversation
In practice

What it does

  1. Discuss a note, saved article or file with an assistant that can see what you have open.
  2. Ask it to research a topic, save a summary as a note and create follow-up tasks, with more capabilities available through installable skills.
  3. Remember useful details between conversations, with memories you can review, edit or delete.
  4. Choose models from OpenAI, Anthropic or Google using your own API key.
Behind the work

The challenge

I built sideBar so an assistant could work with someone's notes, tasks and references without asking them to paste the same background into every conversation. I developed the apps and backend myself. The challenge is choosing useful context, keeping it current across devices and making it clear when the assistant has changed something.

What I learned

Collecting context in one place risks creating another walled garden. That context is less useful if it cannot travel with you into other tools. Building sideBar has made me think more about how context moves between products, as well as how an assistant uses it within one.

Built with

  • Swift
  • SwiftUI
  • SvelteKit
  • FastAPI
  • TypeScript
  • Python
  • Supabase