Gemini 4 Argon + Antigravity (Full Tutorial)

Every prompt I used, plus the Tallyrun folder so you can run the same test: https://rakhulkarthick.substack.com/p/gemini-desktop-app-gemini-4-argon The new Gemini desktop app is now a super app. In this tutorial I set up the Gemini desktop app on a Mac and test it on 4 real jobs: a task that reads a company's 41 files and checks its board numbers, a task sent from my phone, a reusable skill, and a full dashboard built by Antigravity without me writing a line of code. The company is Tallyrun, a fictional booking-software business I set up for this test, with messy sales calls, emails, Slack chats, invoices and revenue sheets. Gemini read all 41 files, made a plan first, found an unsigned $18,292.56 deal inflating the Q3 numbers, and built a 10-slide board review as a PDF. What's in it: - How the Gemini app works, in one diagram (Chat vs Task) - Setting up the Gemini desktop app on a Mac - A folder task: 41 files, a plan first, then a 10-slide PDF board review - A task sent from my phone: the reply draft lands on my Mac and my phone - A skill called deal desk check, called with @ - Antigravity inside the Gemini app: a revenue dashboard on Gemini 4 Argon - What to know before you start: permissions, 15 tasks at once, no Live mode yet Chapters: 00:00 One app that chats, runs tasks and writes code 02:09 How the Gemini app works 03:56 Set up the Gemini desktop app 05:19 A folder task: check a company's numbers 13:39 Run a task from your phone 16:38 Build a skill 17:56 Antigravity builds a dashboard 20:30 Good to know before you start 21:39 The finished dashboard 22:28 Every prompt and the company folder Links: Gemini desktop app: https://gemini.google/desktop/ Gemini 4 Argon in the Gemini app: https://blog.google/innovation-and-ai/products/gemini-app/gemini-4-argon-availability/ Gemini tasks help: https://support.google.com/gemini/answer/17094507 If you want more tests of new AI tools on real work, subscribe. I post a new one every week. Rakhul