> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gettrillion.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# iPhone app
> The Trillion app for iPhone: your needle mover on Home, voice memos with live words, and Add to Trillion in every Share sheet.
The Trillion app is app.gettrillion.ai laid out for a phone, plus two things only a phone does well: recording your voice, and sending anything from any app with the Share sheet.
## What is in the app
When you are signed in, the tab bar has **Home**, **Shared**, **Record**, **Files** and **More**.
| Tab | What it does |
| - | - |
| **Home** | Opens on your [biggest needle mover](/use/pursuits-and-progress#your-biggest-needle-mover), then your other pursuits, each with a needle button to make it the one, and **+** to add a pursuit. Below: what is being decided and what your AIs did. With no needle mover marked, **Have my AI pick** asks an AI to choose and record it. |
| **Shared** | Everything you shared from your phone, newest first, with your note. Open it, **Share again**, **Hand to my AI** with one of your instructions, or copy it. It also shows what to share and how to set up the Share sheet. |
| **Record** | Voice memos with your words shown as you speak (below). |
| **Files** | Your [files](/use/files), with a file's words or picture. |
| **More** | Every other screen, in the same sections as the web: Decisions, Shared spaces, AI activity, Automations, Connections, Formats and the rest. |
Decisions, shared spaces, AI activity, automations and connections open as native screens. Any other screen opens its own page from app.gettrillion.ai inside the app, where you sign in once with your passkey.
## Record a voice memo
Tap **Record** in the tab bar.
Your words appear as you say them: settled lines with the moment each was said, and the words still being heard in grey. Scroll back to read while it keeps recording; **Back to now** returns to the newest words. Recording carries on with the screen locked.
**Pause** keeps the same memo. **Discard** throws it away on the phone. **Done** keeps the sound and a transcript in your Files under **Recordings from iPhone**, by date, and hands both to your AI.
The live words are made on the phone itself, so nothing is sent anywhere to transcribe them.
### Formats
**Formats** (under More) shows the ways you write and speak: your own saved formats first, then the starters every account has, such as a blog post, a newsletter, an X thread, a short video or a YouTube video. Type a thought and every format fills with it at once. Open one to read it as a script in large type, **Record** it with the script pinned above your live words, or tap **Have my AI write it**.
## Add to Trillion from any app
The app adds **Add to Trillion** to the iPhone Share sheet. It takes links, text, photos, videos, sound and files from any app.
### Put Trillion first in the Share sheet
You do this once.
Open something you want to keep, such as a photo, a page in Safari or a reel, and tap the Share button (the square with the arrow pointing up).
The row of app icons scrolls sideways. Swipe it left until you reach **More**, the grey circle with three dots.
**Edit** is at the top right. The list shows Favorites at the top and Suggestions under it.
Trillion is under Suggestions. The plus moves it into Favorites.
Touch and hold the three lines at the right of Trillion and drag it above the others.
Tap **Done** at the top right, then **Done** again. From now on Trillion is first whenever you tap Share.
### Send something
The sheet opens with what you are sharing at the top.
Tap the action and pick one of your saved instructions. For an Instagram link it starts on **Study this content format**; for anything else, **No clue, you figure it out** works.
Under **Send to**, **My Trillion** is on. Turn on a [shared space](/use/spaces) to share it with the people in it, or **Everywhere** for all of them. Type a note if you want to say more.
The sheet closes once Trillion has kept it. If something goes wrong, the sheet stays open and says why.
What you share is kept in your Files under **Shared from iPhone**, then handed to your AIs; whichever takes it does what you picked, and you see what it did on the **Shared** tab and in **AI activity**. In a space, a file stays yours and the space reaches it through you; links and words are added as an item everyone there sees. Files larger than 16 MB go up in parts. With no place chosen, the sheet says so and sends nothing.
The instructions and places in this sheet are the same ones the Chrome extension shows. Change them on the **Sharing** screen at app.gettrillion.ai.
## Signing in
Open the app and tap **Sign in to Trillion**, then use your passkey. The Share sheet uses the app's sign-in, so if you share before signing in, it asks you to open Trillion and sign in once, then share again.
## Getting the app
The Trillion iPhone app is not in the App Store or on TestFlight, so there is no public install link. It runs on iOS 18 or later.
**On Android** there is nothing to install from a store either: open app.gettrillion.ai in Chrome on Android, sign in, and install it as an app from Chrome's menu. Trillion then appears in the Android share menu. After you share, a page shows a preview of what you shared and the same places and instructions as the iPhone sheet; tick the places, pick the instruction, and tap **Send**. What you share is kept under **Shared from Android** in your Files.
This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.