Napkin – Notes & Calc
Notes that calculate
$2.99
Notes that calculate, songs with chords to play from on stage, tags to find them: on your iPhone, iPad and Mac, and every note stays a plain Markdown file.
Napkin is a notes app that calculates, on iPhone, iPad and Mac.
Write a line, end it with =>, and the result appears behind the arrow. Change a number above it and every result below updates as you type.
CALCULATE IN YOUR NOTES
• Variables, including names with spaces: rent = 1100, per day = left / 30 =>
• Your own functions: f(x) = x^2 + 1, then f(4) =>
• Units and conversions: 26.2 miles in km =>, 50 km/h * 30 min =>
• Unknown names stay symbolic: 2 * y + 3 * 4 => 2y + 12
EQUATIONS
• 6x = 30, then x => 5 – the unknown is solved and defined
• Units too: speed * 2 h = 100 km => speed = 50 km/h
• Systems: x + y = 10 and x - y = 2 give x = 6, y = 4
• Comments after # stay out of the calculation
PLOTS
• plot(sin, cos, -pi, pi) draws the curves right under the line
• Functions you defined, expressions in x, or a list of numbers
SONGS AND THE STAGE VIEW
• Chords in brackets, as in ChordPro: Smoke goes [G]up and the [C]stars come out
• The stage view shows a song full screen, chords above their syllables, scrolling up at the speed you set
• The text fills the screen's width; the screen stays on
TAGS
• Label notes, for example Song, then search #song to list them
• Notes with chords count as songs without a tag
• Tags stay with the file: they show in the Files app and the Mac's Finder
MARKDOWN, STYLED AS YOU WRITE
• Headings, bold, italic, code and quotes are styled in the editor
• Bold, italic and links from the menu over a selection, or ⌘B, ⌘I, ⌘K on a keyboard
• Tables, and Convert to Table for lines in columns
• [[Links]] between notes, and tappable web addresses
FAST NOTES
• One field to search and to create: type, press Return, and you are writing
• The words you searched for are marked in the note; find in a note with the find bar
• Hide notes you rarely need; a search still finds them
YOUR FILES, ON ALL YOUR DEVICES
• Every note is a plain Markdown file in a folder you choose, for example in iCloud Drive
• In iCloud with one tap: Napkin on your iPhone, iPad and Mac finds the same notes by itself
• A note changed on two devices at once is kept twice, never overwritten
• Buy once: Napkin for Mac, iPhone and iPad is one purchase
Napkin collects no data and makes no connections of its own.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• iCloud: one tap at the first start, and the notes are the same as on your Mac
• Tags: label notes, then search #song (or any #tag) to list them
• Stage view: a song or text full screen, scrolling up at the speed you set
• Plots: plot(...) draws its curve right under the line
• Chords: [G]-style chords are coloured in the editor
• Convert to Table: lines in columns become a Markdown table, with or without a header row
• Tables lined up with tabs (as in nvALT notes) show as tables
• A table whose header row is empty shows without one
• Editing, importing or moving notes keeps the date they were created
The developer, Alexander Presber, 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
- Alexander Presber
- Size
- 3.5 MB
- Category
- Productivity
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 3 more
- English, French, German, Spanish
- Age Rating
4+
- 4+
- Copyright
- © 2026 Alexander Presber
