Google AI Edge Gallery (https://apps.apple.com/nl/app/google-ai-edge-gallery/id6749645337)

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.

(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.

Via Hacker News (https://news.ycombinator.com/item?id=47652561)

Tags: google (https://simonwillison.net/tags/google), iphone (https://simonwillison.net/tags/iphone), ai (https://simonwillison.net/tags/ai), generative-ai (https://simonwillison.net/tags/generative-ai), local-llms (https://simonwillison.net/tags/local-llms), llms (https://simonwillison.net/tags/llms), gemini (https://simonwillison.net/tags/gemini), llm-tool-use (https://simonwillison.net/tags/llm-tool-use)