Introducing AriRoam: a browser that thinks with you.

AriRoam is an iPhone browser. That is the easy half of the sentence. The harder half: it is a browser made for people who have started to feel sick of the web — of consent walls, of feeds that bargain for attention, of every page asking for one more thing — and who would like, every so often, to feel like the page is on their side.

It ships today on the App Store, free, for iOS 18.4 and up. We've spent the last few months iterating with a small group of friends on the studio's testflight, and the version going out this morning is build 2 of v1.0.

Spaces, not tabs.

The first thing you'll notice is that there are no tabs. There are Spaces: small named rooms, each with its own colour, its own scratchpad, and its own little pile of tabs. The starter set is Personal in violet, Work in cyan, Field in amber, Research in pink — but you can add as many as you like, rename them, recolour them, throw them away.

Each Space holds whatever you're working through. A Space remembers what you saved, what you screenshotted, what excerpts you pulled out of pages. Tabs are scratchpads inside the Space, not the unit of memory. Closing a tab is meant to feel like clearing your desk, not losing a thought.

A copilot, in every page.

Tap the small mark in the corner and Ari joins you on whatever page you're reading. It can summarise. It can translate. It can argue with the author. It can fact-check a claim against your history and bookmarks. It can navigate, open new tabs, click into the page, type into a search box, scroll. There are ten tools in total: five that read (current page, open tabs, page interactables, history, bookmarks) and five that act (navigate, open new tab, click, type, scroll).

When Ari does something to the page, you'll see a small purple glow around the surface and a status pill at the top: "Reading…", "Clicking…", "Typing…". Nothing happens silently. We borrowed the convention from cars: any agentic motion gets a turn signal.

The provider stack is whichever model you like. OpenAI-compatible, Anthropic, Ollama, OpenRouter, ChatGPT's Codex, Apple Intelligence. Keys live in your iCloud-synced Keychain, never in our servers. If you prefer to run a local model on a Mac in the next room, the relay handles that too.

The skill system.

A skill is a small piece of JavaScript — sometimes thirty lines, sometimes three — that bends a page to your shape. There are three kinds:

• Prompt-only — a stored instruction that Ari can call on demand. "Summarise this page like a Hacker News comment."
• Tap-to-run — a one-shot bookmarklet. Tap, the script runs, the page changes.
• Always-on — a user script that runs every time you visit a matching site. Block cookie banners. Hide a particular nag. Rewrite a layout.

Skills are sandboxed in WKUserScripts. They can't talk to Ari, they can't reach across origins, they can't see your other Spaces. Match by hostname substring (case-insensitive), empty pattern means everywhere. We seed a small starter set on first launch — including one that hides the YouTube mini-player. We're already writing a field guide.

Quiet by default.

Some quieter design decisions worth naming:

• The built-in content blocker ships with around 150 ad and tracking hosts blocked from day one, plus a handful of cosmetic CSS hides. There is no toggle for it. It runs because it should.
• No feed. No suggestions. No "you might also like." The home rail shows pinned sites and your recent history, both of which you control.
• Local history (up to ten thousand entries with a thirty-minute dedupe window), local bookmarks, local Spaces. Nothing is uploaded.
• If Apple Intelligence is your chosen model, AriRoam quietly drops the tools for that turn — FoundationModels doesn't yet expose function-calling, and we'd rather degrade gracefully than fake it.

The full feature list is longer than this. The point of this note is small: AriRoam is the kind of browser we wanted for ourselves — fast, mostly quiet, full of small powers when you ask for them, and almost invisible the rest of the time. If that sounds right, the App Store is the next click.

— A.