I use a lot of tools daily, which you’d think would mean I’ve gotten used to the constant tab-switching and app-hopping - but I haven’t. As a result, there’s always that one app you end up living in more than the others, just for the relief of staying put for a minute. Lately, that’s been Claude for me. I’m already in there for research, brainstorming, and pretty much anything that requires heavy thinking. So I thought, why am I leaving to check my calendar or opening whole separate note-taking apps just to come right back?

So for one week, I tried to see how much Claude could actually handle. I wanted to task it with the stuff that’s usually split across my to-do apps, notes apps, and calendars without actually leaving Claude. There are the obvious connectors and integrations, but I wanted to take it a little further and create my own tools in the chat, too. It didn’t even take that long to set up; all you need is Claude, a Project, an Artifact, and natural language.

How Claude replaces my need for a separate note-taking or to-do app

It can connect to the apps you already use, or build one for you

There are several ways you can use Claude as a note replacement app or even just as a temporary note-taking space. First is by simply using the chat panel - you type your notes and send them as a prompt. This method is best when you actually want improvements, such as getting Claude to organize the notes by theme or improve the grammar.

Then there are connectors and integrations. Claude has a library of connectors that connect the app to tools like Notion, Apple Notes, Asana, and so on. If you use any of those products, this setup will let you fetch your notes, documents, and tasks from them without ever leaving Claude, or push notes from within the Claude chat panel into those apps. For more niche apps like Obsidian and Joplin, you will have to set up the MCP server yourself, as there aren’t official connectors for them.

And then there’s my favorite connector: Filesystem. This connector is primarily meant to give Claude access to your local files for organization and management, but I actually use it as a note-taking tool. Instead of opening a text editor or notes app, I just ask Claude to create a plain text file in my folder of choice and populate it with the text I give it. It does it programmatically in the background, the same way any app saves a file internally. The result is a .txt or .md file sitting in my folder, ready to open anywhere.

There's another option - just have Claude build you a notes app from scratch. I described what I wanted (something similar to Joplin, with a sidebar for navigating notes and basic Markdown formatting), and it came back with a fully functional app in one shot. The color and sizing adjustments after that were just personal preference. The part that actually matters, though, is that the notes persist - you can ask Claude to wire the artifact up to a storage API on the back end, so every time you reopen it, everything you saved last session is still there. And since my app is Markdown-based, it easily uses the checkbox syntax for marking off my to-dos as well.

It effectively replaced my calendar, too

Again, it can either connect to your calendar, or build you a whole new one

Using Claude in place of a calendar is similar to what I did with the notes and to-do apps. The easiest way is through an official connector to the calendar you already use, such as Google Calendar. This lets you create tasks and appointments right in the chat, or get an overview of upcoming events that are already populated in your calendar. It’s pretty straightforward.

But I actually wanted to put Claude’s new interactive visuals to the test with this. Claude can now build inline visual elements that you can interact with right in the chat, and they can also be converted into Artifacts if you want to keep using them beyond the chat. So, I asked Claude to create a calendar for me using just a simple prompt. I did it in the same chat where I was already using Claude to help sort through my weekly to-dos, so I could easily hop over to the calendar and fill in my tasks.

Here’s the prompt I used:

Create an interactive weekly calendar as an inline visual. I want a full week view with the current day highlighted, time slots I can click to add events, and the ability to edit or delete events. Keep it clean and minimal, but colour-coded. Once it's working, I want to convert it to a persistent artifact using the storage API so my events save between sessions

Why even use Claude to replace these apps?

When there are already perfectly good productivity tools

The primary reason I wanted to try this was simply to dull the noise a little - despite having to tool-hop every day, I still hate it. But the bigger winner here is that the note-taking, to-do, and calendar functions now exist within context. I put everything into a Project to keep it organized, and since I’m on Pro and have unlimited projects, I can foresee myself creating a Project for every week. Now, my entire productivity suite has all the context of whatever it is I’m working with. Claude can organize my notes, derive to-dos from my notes, and also fill in my calendar for me. Whether I’m doing this through a connector or with a tool I created myself in Claude, everything remains in the same window and has all the relevant context.