SketchCalc vs Instink Handwritten Notes

SketchCalc combines a scientific calculator, a visual math notebook and a bill splitter in one workspace. Calculate, graph, sketch and organize your ideas directly on the page. No account is required for the core notebook. **SCIENTIFIC CALCULATOR & LINKED MATH** Work with fractions, percentages, powers, roots and trigonometric expressions. Connect calculations so dependent results can update when source values change. Explore supported algebra and step-by-step math solutions. **GRAPHS, SLIDERS & VISUAL NOTES** Plot functions, adjust values with sliders and keep graphs beside calculations. Add handwritten notes, pencil sketches, shapes and diagrams to build a readable visual record of your work. **BILL SPLIT & RECEIPT SCANNING** Divide restaurant bills and shared expenses. Add items and people, assign purchases, and account for tax, tips, service charges and discounts. Where supported, scan a receipt to help enter the bill. Always review recognized amounts before splitting. **SCAN & SOLVE** Capture or select an image containing supported math expressions. Review recognized symbols, explore available solution steps and add supported results to your notebook. Recognition and calculation are handled locally on your device. **SAVE & EXPORT** Keep your pages and project files on your device. Reopen your work and export supported content, including PDF. Some export formats and advanced tools require PRO or a rewarded unlock. **FREE & PRO** The Free version includes a first notebook page with up to 10 rows. Completing a rewarded ad can unlock a second 10-row page for 48 hours; its saved content remains on your device after the unlock expires. Selected advanced tools and Bill Split have separate rewarded access limits. Rewards are granted only after an ad is completed. SketchCalc PRO is a one-time purchase that removes ads and unlocks expanded pages, rows and tools. Availability of scanning and advanced calculations may vary by device and operation. Check important calculations and recognized text before relying on them.

An idea shows up. By the time you've unlocked your phone, found your notes app and opened a new page, it's gone. Instink is a blank sheet on your Home Screen. Tap it and you're already writing — by hand, in your own handwriting. Tap Done and you're back where you were. One second. WHY PEOPLE KEEP IT • Ready in under half a second. No account, no sign-up, nothing to choose before you write. • Your handwriting, not a font. Finger or Apple Pencil, with ink that follows your hand. • Saved from the very first stroke. Put the phone away mid-sentence: the note is already safe. • Hands busy? Type, snap a photo or record your voice from the same sheet. • Phone locked? Ask Siri to add a note to Instink and dictate it. No unlocking. EVERY WAY IN Home Screen and Lock Screen widgets, Control Center, the Action button, Back Tap and Shortcuts. Use the one closest to your thumb. THEN, WHEN YOU HAVE A MINUTE • Sort new notes like cards: swipe right to send, left to keep, down to delete. Ten seconds. • Send any note to Notion, Notes, Google Keep, Obsidian, Mail or Messages — as text, with your handwriting attached. • Search your handwriting. Instink reads it on your device. • Wrote "dentist tomorrow at 10"? Instink offers to put it in your calendar. • Once a day an old note resurfaces — "a week ago today" — so good ideas don't get buried. • At night the sheet turns dark, so it won't blind you in bed. PRIVATE BY DESIGN No account. No ads. No tracking. Your notes stay on your device and never pass through a server of ours. Handwriting and voice are recognized on your iPhone. WHAT INSTINK IS NOT It's not a notebook with folders and pages. It's the pen for the notes system you already use. Questions or ideas: hello@instink.app — a real person reads every message.