How do AI tools work in the iOS Share Sheet?
Most people use AI for writing in the most awkward way iOS allows. Copy a paragraph. Switch to a chatbot app. Paste. Explain what you want. Copy the answer. Switch back. Paste again. Seven steps for one rewrite, with the original message out of sight the whole time.
iOS has carried a better path for years. It is the Share Sheet, and AI writing tools that plug into it turn those seven steps into two or three taps.
What is the Share Sheet?
The Share Sheet is the panel that slides up when you tap the share button — the square with the arrow — or when you select text and choose Share from the menu. It lists people you might send the content to, then apps and actions that can receive it.
The key detail is that third-party apps can register for it. An app tells iOS which kinds of content it accepts, such as plain text, links, or images. Any app that accepts text becomes available wherever text can be selected, which in practice means almost everywhere: Mail, Safari, Notes, Messages, and most apps beyond them.
How does the select, share, process flow work?
Take a real case. An email sits in your inbox and needs a careful reply. Instead of leaving Mail, you select the paragraph that matters. You tap Share. You choose the writing tool from the sheet.
The tool opens as a panel floating over Mail. It receives the selected text as its input, processes it, and shows the result in place. Depending on the tool, processing might mean a rewrite, a summary, or a drafted reply in a saved style. The original email stays on the screen behind the panel the entire time.
Why does this beat switching apps?
Three reasons, in rough order of importance.
Context stays visible. The source text sits right behind the panel, so you judge the result against the original instead of comparing from memory.
Friction stays low. Two or three taps against seven steps sounds like a small difference, but friction decides whether you use a tool at all for small texts. A flow you finish in five seconds becomes a habit. A flow that needs an app switch does not.
Scope stays precise. Your selection defines exactly what the tool sees. You share one paragraph, not an entire thread, which keeps the result focused and keeps the rest of the conversation out of the request.
How does the text come back to you?
The result appears inside the tool’s panel, over the app you were in. From there you copy it with one tap and paste it where it belongs, such as the reply field. Close the panel and you are exactly where you started.
One honest limitation: iOS does not let a Share Sheet tool reach into another app and replace your selected text directly. The final paste is always yours. In practice that works in your favor, because nothing in your message changes until you decide it should, and the heavy part of the work — reading the context and producing the draft — has already happened in place.
What should you look for in a Share Sheet AI tool?
Anything you place in the Share Sheet sees the text you select, so it is worth choosing deliberately.
Check where processing happens. Some tools send your text to cloud servers; others process it on the device. The App Store privacy label is the quickest signal, and a Data Not Collected label means the developer states that no data is taken off your phone.
Check whether the tool remembers your style. A one-shot rewriter produces generic results forever, because it learns nothing between uses. A tool with a trained, saved style applies it on every share. ILURA is an example of both qualities at once: shared text is processed on the device with Apple Intelligence, there is no account to create, and the result follows a role playbook you have trained by correcting its drafts. It works today on iOS 18 and later.
The Share Sheet is one of the oldest pieces of iOS, and it quietly solves the newest problem: getting AI help with text without leaving the place where the text lives.
Use iOS as the invocation surface
Siri, Shortcuts, App Intents and the Share Sheet are ways to call an ILURA agent. They are not the memory itself; the trained behavior stays with the role agent.
- Invoke a named agent
- Pass the selected text or context
- Review the result before sending
Try it now
Put this to work on a real message.
Open ILURA, bring in a message you actually need to handle today, and get it done in your voice — free, on device, no account. It learns the preference, so the behavior carries to the next one.
Free to start · No account · Data Not CollectedQuick answers
- Does the Share Sheet work with text from any app?
- Nearly any app that allows text selection can pass it on. Mail, Safari, Notes, and most messaging apps support sharing selected text out of the box.
- Does shared text leave my iPhone?
- It depends on the tool. Some send text to cloud servers, while on-device tools process it locally. The App Store privacy label is the quickest way to tell them apart.
- Do I need a future Siri update for Share Sheet AI tools?
- No. The Share Sheet has been part of iOS for years, and tools that support it work today on supported iPhones. Siri improvements are separate from the basic select, share, process flow.