Gemma 4 E2B runs surprisingly well on my 8GB Android phone, so I built a private voice notes app around it.

Been running Gemma 4 E2B locally on my OnePlus CE 5 (8GB RAM) for a few months. Chat quality is fine for the size. What surprised me was JSON output. Short input, give it a structured prompt, you get clean parse able JSON back. Way better than I expected from a 2.4GB model on a phone. Got me thinking about voice notes. You ramble for a few seconds, "call the dentist tomorrow at 3, also buy milk on the way home", and Gemma can split that into separate items, tag each one (reminder, buy), resolve