Nebula - Knowledge Center

Nebula - Knowledge Center

Make your notes alive

3 ratings
4 reviews

Archived App (Last seen on 4 May 2025)

This is an archived listing of the app previously available on the App Store.

Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.

Details

  • Released
  • Updated
  • April 23, 2020
  • August 17, 2021
Nebula - Knowledge Center screenshot #1 for iPhone
Nebula - Knowledge Center screenshot #2 for iPhone
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Nebula - Knowledge Center screenshot #9 for iPhone
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About

This app combines note-taking, material management, and task management into a personal knowledge system. Organize content with rich text editing, attachments, and bi-directional linking. Manage tasks with an agenda and Kanban boards, and sync across devices via iCloud.

โœ“Rich text editor with attachments
โœ“Task management and agenda
โœ“Kanban board for item management
โœ“Material capture and organization
โœ“Bi-directional document linking
โœ“iCloud sync across devices
โœ“Export to multiple formats
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What's New in Nebula

1.3.6

August 17, 2021

New features: New Agenda, much easier to manage the task status, tags, priority. Material manage now includ all attachments. Improvements: Fix when renaming document, didn't correctly rename those opening documents. Improved opening speed. In editor now high light the current line. Fix when update task status, not update in agenda and kanban. Improve interaction with image attachment in editor. Fix cursor location misplaced when paste text. Fix selection range can't adjust in iPhone and iPad. Fix some customized settings didn't load in time after sync.

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Subscription plans

Nebula membership by month

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$1.491 Month
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User reviews

Messy

So much potential that still needs to be realised. The font is tiny and there's no way to customise it. The icons are tiny and very light and there's no way to make them bigger. I can't modify the theme - not too keen on the colour of the tabs. I keep trying to capture ideas and they disappear into nothingness. Tried to read help section but images are not registering on the server - there's just a blank square with a question mark. It's very difficult to figure out how to do things. There is not list of extra features to know what you're getting if you subscribe. I did subscribe for a month and I don't know what I'm getting. Was hoping it would be obvious, but it isn't. Not renewing and deleting app from computer. It's a nice app wth lots of potential. I may consider once developer catches up with a working standard
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App has many bugs - Almost unusable

I write this on April 28, 2021.

The app looked promising, and I did the mistake of unlocking all the features, and paying for it.

Unfortunately the developer has to fix many bugs that crash the app almost constantly. I have hope he will fix it.

As of now adding images to capture in the app crashes it, the agenda does not do anything, the custom Kanban status crashes it.

Please work on it, I have hope it can be useful, but it needs a lot more testing to be really usable.
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Response from developer

Hi, please take a look at the new version 1.34 to see if those crash still there Thanks โ€”โ€” Hi Joseph, Really sorry for causing the problem, I noticed you are on macOS, could you please provide your macโ€™s model, we will try the best to fix any bug reported, and thank you very much for the support, I feel sorry for the unpleasant experience, fix will be released asap, in the mean while, it will be extremely helpful that if you give us some more info on those bugs, there is a build in feedback button on the top left corner to put mort text, once we located the source of the crashing you met, a new fix will be released. Sincerely

Rather impressive

For an app that's attempting to do so much, x3note works remarkably well, even at this early stage. What's more, the app's footprint is gratifyingly tiny โ€“ once installed, it only takes up a few megabytes on disk (14 MB), which is extraordinary. I have noticed a few bugs while using the app, but the developer is quick to remove them.

The closest rival is NotePlan, which, while powerful, is significantly more expensive. And x3note's support for "ideas" (meaning a raft of attachments/copied-and-pasted input from multiple sources) is unique. The agenda feature is nice, but personally I'm especially impressed by the notetaking support, which is as powerful as most outliners (e.g. Workflowy, Dynalist).

So far, I like it very much. I've deducted a star for the occasional bugs, but will be very happy to reinstate it once the app has matured a little further.
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Great start

Unique in the notes category.

Developer apps

FAQ

What is Nebula?

Nebula is a personal knowledge system that integrates note-taking, material management, and task management. It offers a rich text editor, task agenda, Kanban boards, and iCloud sync to help users organize their information efficiently.

What devices does Nebula support?

Nebula is available on Mac, iPhone, iPad, and iPod. It utilizes iCloud sync to keep your data consistent across all your Apple devices.

Can I export my notes from Nebula?

Yes, Nebula allows you to export your content in various formats including Markdown, TXT, HTML, PDF, and image files. This makes it easy to share or back up your information.

How does Nebula handle tasks?

Nebula features a Task Agenda that automatically generates tasks from marks within your notes. It also lists high-priority and overdue tasks, and supports repeatable tasks with notifications.

Does Nebula have ads?

Nebula is ad-free, allowing for an uninterrupted user experience. The app's monetization comes from optional subscription plans.

What are the subscription options for Nebula?

Nebula offers a monthly membership for $1.49/month and a yearly membership for $13.49/year. These subscriptions provide access to premium features and enhanced functionality.

How often is Nebula updated?

The latest version of Nebula is 1.3.6, which was last updated on August 17, 2021. While specific update frequency isn't detailed, the app has seen regular development since its release on April 23, 2020.

Is Nebula suitable for collaboration?

While Nebula is primarily a personal knowledge system, its ability to publish to blog platforms and export to various formats can facilitate sharing of information. Direct real-time collaboration features are not explicitly mentioned.