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6th April 2026 - Link Blog

Google AI Edge Gallery (via) Terrible name, really great app: this is Google's official app for running their Gemma 4 models (the E2B and E4B sizes, plus some members of the Gemma 3 family) directly on your iPhone.

It works really well. The E2B model is a 2.54GB download and is both fast and genuinely useful.

The app also provides "ask questions about images" and audio transcription (up to 30s) with the two small Gemma 4 models, and has an interesting "skills" demo which demonstrates tool calling against eight different interactive widgets, each implemented as an HTML page (though sadly the source code is not visible): interactive-map, kitchen-adventure, calculate-hash, text-spinner, mood-tracker, mnemonic-password, query-wikipedia, and qr-code.

Screenshot of an "Agent Skills" chat interface using the Gemma-4-E2B-it model. The user prompt reads "Show me the Castro Theatre on a map." The model response, labeled "Model on GPU," shows it "Called JS skill 'interactive-map/index.html'" and displays an embedded Google Map centered on a red pin at The Castro Theatre in San Francisco, with nearby landmarks visible including Starbelly, Cliff's Variety, Blind Butcher, GLBT Historical Society Museum, and Fable. An "Open in Maps" link and "View in full screen" button are shown. Below the map, the model states "The interactive map view for the Castro Theatre has been shown." with a response time of 2.4 s. A text input field with "Type prompt..." placeholder, a "+" button, and a "Skills" button appear at the bottom.

(That demo did freeze the app when I tried to add a follow-up prompt though.)

This is the first time I've seen a local model vendor release an official app for trying out their models on in iPhone. Sadly it's missing permanent logs - conversations with this app are ephemeral.

Posted 6th April 2026 at 5:18 am

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This is a link post by Simon Willison, posted on 6th April 2026.

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