1dea - Idea book
Idea management
Free · Designed for iPad
Ideas never make an appointment. 1dea catches them in a second
Ideas never make an appointment. 1dea catches them in a second, files them without effort, and hands them back just when you had forgotten them.
Made for people who write, teach, research or simply think: aphorisms, quotes, talk outlines, hypotheses, reading notes, projects.
CAPTURE
• From the app, from the Share button of any other app, or with Siri and Shortcuts ("Add an idea").
• Markdown formatting: headings, bold, italic, highlight, lists, quotes, code, links.
• LaTeX equations, on their own line or in the middle of a sentence.
• The place where the idea came to you, added automatically if you wish.
FIND
• Search by words, or by meaning: 1dea finds related ideas even when they share no word.
• Coloured categories, tags and one-to-three-star ratings to filter in one tap.
• Related ideas and links between notes to weave your thinking together.
• A world map of your notes.
REREAD
• Home Screen widget: a random idea, from the categories you choose, refreshed anywhere from every 15 minutes to once a day.
• "Random idea" in Siri and Shortcuts as well.
• Project note: gather several ideas into one working draft.
MEASURE
• Statistics by month, year, category and rating.
• Vocabulary tools: how many words you have written, how many are still ahead of you (Chao2 estimator), and how varied your vocabulary is (Shannon entropy).
SHARE
• Copy or share an idea as a quote, with your signature.
• JSON export and import of your whole library.
YOUR NOTES STAY YOURS
• No account to create: sync goes through your own iCloud, across iPhone, iPad and Apple silicon Mac.
• Search by meaning and statistics are computed on the device.
• Lock with Face ID, Touch ID or passcode.
Free, no ads, no in-app purchases. In English and French.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Performance improvement
bag of words
The developer, 1O1IN, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- luc brunet
- Size
- 7.4 MB
- Category
- Productivity
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - iPad
Requires iPadOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English and French
- Age Rating
4+
- 4+
- Copyright
- © 2026 l0d0v1c