Scratch Papers is a simple handwriting app that brings the feel of real lined paper to your iPhone. Pick from HB, 2B, 4B, and 6B pencil grades, switch between black, red, and blue ink, and erase with stroke or pixel precision. With multi-page management and pinch zoom, it's the perfect digital scratch pad for math, notes, and sketches.
Choose from HB, 2B, 4B, and 6B to control line width and darkness. HB gives crisp, fine lines while 6B delivers bold, expressive strokes — perfect for everything from study notes to detailed diagrams.
Switch between black, red, and blue ink to color-code your notes. Stroke eraser removes an entire stroke at once; pixel eraser lets you erase with precision. Use whichever fits the moment.
Add, delete, and reorder pages freely. Keep calculations, idea sketches, and meeting notes on separate pages — organized by theme and always easy to find.
Pinch with two fingers to zoom in up to 5× for detailed writing. All tools work normally while zoomed. Two-finger double-tap instantly resets scale and position.
Select HB, 2B, 4B, or 6B from the top toolbar with a single tap. Each grade has its own line width and opacity: HB is sharp and precise, 6B is bold and expressive. Switching grades mid-write is instant, so you can move naturally between fine detail and broad strokes without breaking your flow.
Black, red, and blue ink let you highlight key ideas, mark corrections, or separate layers of thought at a glance. The stroke eraser removes a whole stroke in one tap — great for quick clean-ups. The pixel eraser lets you scrub away just the part you need to fix, leaving everything else intact.
Add pages as you go from the bottom page panel. Reorder them by drag-and-drop, delete what you no longer need, and flip between pages with a tap. Thumbnails give you a quick visual preview of each page so you can find the one you want instantly.
Pinch in with two fingers to zoom from 0.3× all the way to 5×. All drawing and erasing tools work exactly the same while zoomed, making it easy to write tiny equations, add annotations, or refine small details. A two-finger double-tap snaps the view straight back to default scale and position.
Launch the app and a fresh lined page is ready immediately. Tap the pencil grade (HB–6B) and ink color you want from the top toolbar before you start writing.
Write directly on the paper. Pinch to zoom in for tight spaces and fine detail. Made a mistake? Switch to stroke or pixel eraser mode and fix it in seconds.
Tap the plus button in the page panel to add a new page whenever you need one. Separate your calculations, notes, and sketches across pages to keep everything organized and easy to review later.
"I use this for math study every day. Switching pencil grades actually feels different — I write working notes in 2B and circle the final answer in 6B. Being able to add unlimited pages and split them by subject is exactly what I needed."
"Perfect for quick meeting notes. Being able to flip between red, blue, and black ink on the fly is really handy. Pinch zoom means I can cram a lot onto one page without squinting. I love that it stays out of the way — no clutter, just paper."
"I use it to rough out design ideas. The stroke eraser that wipes a whole line at once feels satisfying and fast. Jumping between pages to compare two sketches side-by-side has genuinely changed how I brainstorm."
Find answers to common questions below.