👋 Ian from Microsoft Whiteboard here. Thanks for using the app! It's early days, and there's so much more coming every day from our team. Just today we released a significant update to our iOS app, for example (and these features made it into the Windows 10 app recently too).
To address your specific questions/issues:
I am amazed at the number of dedicated mind mapping apps in the App Store that do not support the Apple Pencil. I haven't found one yet that does.
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I have discovered Whiteboard by Microsoft. It is an infinite whiteboard, so essentially it acts as a mind mapper for me. The iOS version is free, and for me it is very intuitive. It works well with the Apple Pencil 2 and iPad Pro 12.9" 2018. While it is not a traditional mind mapper, it works great for brainstorming.
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The app's only issue is if you want to share and collaborate with others. The iOS app allows you to create a link to a private web page and to invite others. But in order to actually use this web version, known as "Microsoft's Whiteboard web app preview," the only folks with current access are Office 365 admins (not Office 365 Home or Personal; it has to be Office 365 Business) or commercial accounts. https://products.office.com/en-us/microsoft-whiteboard/digital-whiteboard-app
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Since Whiteboard is new, and since over time OneNote became more widely available and eventually free, there is hope that the same could happen with Whiteboard.
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I would love to see a mind mapping app for iOS and macOS with Apple Pencil support and iCloud collaborative sharing. I want to be able to draw on the map with a pencil or add text and even sticky notes, photos, etc. Something between a mind map and an infinite whiteboard. You can do almost all of this with Microsoft Whiteboard, but the share function is limited.
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For personal mind mapping on a whiteboard, I am enjoying the app and hope they eventually add collaborative support for personal (free) Microsoft accounts.
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