IceCubesApp

github.com/Dimillian/IceCubesApp Linux & Mac Apps Open-source projectOpen source

Use IceCubesApp to connect to a Mastodon instance, browse timelines, interact with users, and post through a SwiftUI client.

github.com/Dimillian/IceCubesApp
IceCubesApp homepage screenshot

About IceCubesApp

IceCubesApp is an open-source Mastodon client built entirely in SwiftUI. It runs on iOS, macOS, iPadOS and visionOS, connects to any Mastodon instance, and supports browsing home, local, federated and trending timelines, interacting with other users, and posting updates and media. macOS and iPadOS use a dedicated sidebar interface.

Key features

  • Connect to any Mastodon instance; browse home, local, federated and trending timelines
  • Custom tag groups and remote local timelines for browsing other instances
  • Post editor with threads up to five posts, four images, polls and content warnings
  • AI text correction, hashtag generation and image descriptions via the OpenAI API
  • Push notifications grouped by mentions, favorites and boosts, with per-type controls
  • iCloud sync of tag groups, remote timelines and drafts; cached home timeline
Best for: Mastodon users on Apple devices who want an open-source, SwiftUI-native client with cross-device timeline sync.
Good for
  • Open source and built entirely in SwiftUI
  • Multiplatform across iOS, macOS, iPadOS and visionOS, with a sidebar UI on macOS and iPadOS
  • Timeline position syncs through the Mastodon marker API so reading can resume on another device
Watch out for
  • AI-assisted writing and image description features rely on the OpenAI API
  • Push notifications depend on a proxy the project runs between Mastodon and APNS
  • Posts are limited to threads of five and up to four images per post

IceCubesApp at a glance

Type
Open-source project
Pricing
Not confirmed. Check the site
Open source
Yes · Source code
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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IceCubesApp FAQ

Which platforms does IceCubesApp support?
It is multiplatform and works on iOS, macOS, iPadOS and visionOS.
Can it connect to any Mastodon server?
Yes, you can connect to any Mastodon instance.
How are push notifications handled?
The project runs a proxy between Mastodon and APNS to route push notifications, states that the proxy cannot read them, and decodes notification content on the device.
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