Why You Need a “Second Brain” (And the Best Apps to Build One)

Look, my brain is a chaotic place. If I had to describe it, I’d say it’s like an overstuffed filing cabinet, but maybe one that got shook up in a move? Thoughts, ideas, grocery lists, and random existential crises. It’s all jumbled together, friends. I tried keeping track of everything in a planner, in my Notes app, and sometimes in an actual, physical notebook. Unsurprisingly, is still felt as if I was forgetting too much. Mostly writing ideas, maybe a grocery list item here and an appointment there.

That’s when I started doing some digging into the concept of a “second brain.” It’s basically a note-taking system where you offload all your thoughts, ideas, tasks (basically everything) into one organized digital space. The idea is to free up your actual brain for, you know, thinking, rather than frantically trying to remember where you wrote down that brilliant idea at 3 a.m.

I’ve only been looking into this for about a week and a half but here’s what I’ve found as far as notetaking/second brain apps go. I’ll give you a quick summary of each based off of my research and some quick clicking around and experimentation plus my personal opinion of each. Though, I WILL mention that I think each has it’s own strengths and may tailor itself to a different type of brain than mine. So, as cliche as it is, I’ll say to each their own.

Logseq: The Powerhouse for Outliners

If you’re a fan of bullet points, outlines, and linking your thoughts like a digital spider web, Logseq is your new best friend. It’s a free (this is the word that convinced me), open-source app that lets you create daily notes, build outlines, and interlink ideas like crazy. I love it because it’s local-first (meaning my notes are stored on my device, not in the cloud), and it uses plain text files, so I never have to worry about losing my data. Plus, the bi-directional linking lets me see how my thoughts connect over time—perfect for writing projects and organizing ideas. It is a little bare bones I will say and in using it, I definitely wish they had an app so I could sync all my ideas that I take on my phone to my software on my computer. Oh well, can’t have everything.

Why I Love It:

• Local storage and privacy.
• Bi-directional linking (think digital mind maps).
• Outlining is its superpower.
• It’s free!

Who It’s For:
People who love structure, outlines, and organizing their thoughts in a non-linear way. Writers, researchers, and obsessive list-makers. And for those of us who don’t want to spend money but want something like Obsidian minus the subscription. Which, speaking of which…

Obsidian: The Mind Mapper

Obsidian is the cool kid on the block that everyone’s talking about. It’s all about connecting your ideas with backlinks and visualizing them as a network of thoughts. If you’ve ever wanted to see how your ideas relate to each other like a digital conspiracy board (red strings and all), this is your app (MUCH like Log Seq, like I said).

Why It’s Popular:

• Graph view to visualize your notes and their connections.
• Customizable with a ton of community-made plugins.
• Markdown-based (plain text files for the win).
• Has an app with across device syncing.

Who It’s For:
Visual thinkers who like seeing the bigger picture. Great for creative projects, research, and anyone who likes to link ideas together. But, as mentioned before, you have to subscribe for this service. If you’re okay with dropping some cash, this one definitely looks the cleanest of all the network based notetaking apps.

Evernote: The Veteran with All the Bells and Whistles

Ah, Evernote. It’s been around forever, and for good reason. It’s toolbox is incredibly diverse. You can save text notes, voice memos, images, web clippings, and even PDFs. It syncs across all devices, so you can access your notes anywhere. But there’s a catch: the free version is pretty limited, and the premium version isn’t cheap (sorry to keep mentioning money but if you’re something like me, you might not have money to burn).

What It’s Good At:

• Capturing everything—text, voice, images, web clippings.
• Powerful search features, including text within images.
• Easy syncing across multiple devices.

Who It’s For:
People who need an all-in-one digital filing cabinet. If you’re constantly gathering information from different sources and want it all in one place, Evernote is your go-to. Just be okay with spending money.

Notion: The All-in-One Workspace

With Notion you can take notes, manage tasks, build databases, and even design a personal wiki. It’s visually appealing and highly customizable, but it can be overwhelming at first because of how much it can do. I tried it for a while, but it felt like using a sledgehammer to crack a nut (just a bit overkill). That said, some people absolutely swear by it for its flexibility and diversity.

What Makes It Stand Out:

• Highly customizable pages and templates.
• Collaborative features for team projects.
• Can be used as a note-taking app, project manager, and even a personal wiki.

Who It’s For:
Power users who want everything in one place. Probably really awesome for someone who does a lot of computer work for their job. If you like customizing workflows and want your notes, tasks, and databases all in one app, Notion is your playground.

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Which One’s Right for You?

Choosing a second brain is, as most things are, up to your own personal taste and what type of record keeping jives with your brain. If you love outlining and linking ideas, give Logseq or Obsidian a try. Want a digital Swiss Army knife? Notion’s your best bet. Need a reliable all-in-one solution with easy syncing? Go for Evernote. And if you want something simple, there is definitely no shame in using your phone notes.

Personally, Logseq has caught my eye and I will probably make a whole other post based off of my experience with it. But, if any of the other apps or programs have caught your fancy, why not give ’em a go?

Maybe it’s time to give your brain a break and get yourself a second one. Just a thought. Or maybe mine’s the only one that needs a breather. Either way, thanks for reading!