Lightbulb: AI Keyboard & Chat
Prompts, Research, Write
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
AI keyboard and AI assistant built native in every app. Chat, write, rewrite, and polish text instantly with no app switching.
Lightbulb is the AI keyboard and AI assistant that works natively in every app you type in, with no app switching.
Instead of copying text into a separate AI chat app, Lightbulb brings AI chat, AI writing, rewriting, editing, and saved messages directly into your AI keyboard. Use it in messaging apps, social apps, email, notes, work tools, and anywhere the keyboard appears.
Ask a question, get an answer, select the response, and turn it into a full post. Rewrite a message before sending it. Fix grammar in place. Make text clearer, shorter, friendlier, more professional, or more engaging, all without leaving the app you are already using..
Lightbulb is built for people who want an AI assistant to feel native, fast, and available everywhere.
What you can do with Lightbulb:
.Use AI chat in any app: Ask questions, get quick answers, brainstorm ideas, and turn responses into usable text from your AI keyboard.
.Write with an AI assistant: Create messages, replies, captions, posts, emails, and drafts without opening another app.
.Rewrite text in place: Select text and make it clearer, more engaging, more professional, shorter, friendlier, or easier to read.
.Edit, extend, and review: Improve unfinished thoughts, continue drafts, clean up grammar, fix spelling, polish punctuation, and remove awkward phrasing.
.Turn quick answers into full posts: Ask something simple, select the AI chat response, and transform it into polished content for social media, work, or everyday communication.
.Save messages you reuse: Store common replies, prompts, snippets, and follow-ups so you can insert them instantly.
.Pin your best shortcuts: Keep your most-used saved messages close by for faster typing.
.Set reminders: Save important messages, ideas, or follow-ups and get reminded at the right time.
Lightbulb combines an AI keyboard, AI assistant, and AI chat experience into one native writing layer across your apps.
No copy-paste workflow. No app switching. No losing context.
Just open your AI keyboard and use your AI assistant where you already type.
Write faster. Reply better. Polish instantly. Stay native in every app with the Lightbulb AI keyboard.
Support: info@flowclass.io
Privacy Policy: lightbulbai.app/privacy
Terms: lightbulbai.app/terms
Subscription EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
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We passionately rebuilt Lightbulb. Now it's even more convenient to text and research from where you touch your phone the most.
The developer, Flowsophic Limited, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- User Content
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Flowsophic Limited
- Size
- 96.7 MB
- Category
- Productivity
- Compatibility
Requires iOS 18.1 or later.
- iPhone
Requires iOS 18.1 or later. - Mac
Requires macOS 15.1 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.1 or later.
- iPhone
- Languages
- English and Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Lightbulb Premium Year $29.99
- Lightbulb Premium Month $3.99
- Copyright
- © Lightbulb
