Compare software

Interstellar vs Mlem: catalog facts
Interstellar	Mlem
Best for: Lemmy, Mbin and PieFed users who want one app for all three	Best for: Lemmy users on iPhone who want a native client
Free Free and open source.	Free Free and open source.
Windows, Linux, Android	iOS
Works with Mbin, Lemmy and PieFed in one app Cross-platform from a single Flutter codebase All 3 strengths for Interstellar Works with Mbin, Lemmy and PieFed in one app Cross-platform from a single Flutter codebase Open source with a published privacy policy	Native iOS app written in Swift Works across Lemmy instances All 4 strengths for Mlem Native iOS app written in Swift Works across Lemmy instances Open source with an active contributor group Open in Mlem extension for Lemmy links
Smaller project with a modest contributor base Features depend on what each server type supports	iOS only, with no Android version Supports Lemmy rather than other fediverse platforms
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Sources for Interstellar github.com/interstellar-app/interstellar play.google.com/store/apps/details apt.izzysoft.de/fdroid/index/apk/one.jwr.interstellar Catalog checked September 24, 2026	Official website Full listing and sources Sources for Mlem github.com/mlemgroup/mlem apps.apple.com/us/app/mlem-for-lemmy/id6450543782 Catalog checked September 24, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.