Smilodon

iPhone · GoToSocial & Mastodon

Smilodon

A fast, beautiful, media-rich fediverse client.

iOS first. Mac next.

In development for iPhone — TestFlight coming soon
Coming soon TestFlight

No public link yet — check back soon.

01

Why Smilodon

01

Instant open

A disk-mirror of your timeline paints the first frame before the network even responds. Cold launch is a performance budget, not an aspiration.

02

Home, Local, Federated

Switch feeds the way the fediverse actually works — your follows, your server's local timeline, the wider federated stream — plus Lists and Hashtags.

03

One build, two backends

Native support for GoToSocial and Mastodon. Every backend-divergent feature is capability-gated, so the same build is correct on both — never a Mastodon client with GoToSocial bolted on.

04

A composer built for developers

Multiple images with per-image alt text, photos and video, content warnings, drafts — and real fenced, highlighted code blocks on the servers that support them.

05

Threads and profiles that hold together

Replies stay in context instead of a flat wall. Profiles carry header, bio and followers — tappable and editable, never a dead end.

06

Themes with real contrast

Snowfield, Polar Night, Tundra and more. Every palette is WCAG-AA verified against real relative-luminance math, not eyeballed.

02

Questions

What is Smilodon?
A native iPhone client for the fediverse — Mastodon, GoToSocial, and the servers that speak their API. iPhone ships first; a native Mac app is next, sharing the same core.
Does it work with my server?
Yes. Smilodon speaks the Mastodon client API, so it works with Mastodon, GoToSocial, and compatible servers. Feature availability is detected per server rather than hard-coded, so the same build behaves correctly on both.
What does it cost?
Free, supported by ads. A one-time purchase removes them — no subscription, no feature gating, Family Sharing supported.
Is there a Mac app?
Yes — planned as a native AppKit + SwiftUI app from day one, not a Catalyst port. iPhone ships first.
When can I get it?
It's in active development for iPhone, heading toward TestFlight. There's no public link yet — check back soon.