Pythagorus doodlus vs SketchCalc

Solve any triangle with ease — instantly and visually. Pythagorus doodlus is designed for anyone who works with triangles every day: engineers, builders, surveyors, students, and curious minds. The app was originally created for a friend who is a carpenter and for my sister, an architect — and it shows. Every feature is built to be practical, intuitive, and genuinely helpful in real‑world situations. Enter any combination of sides or angles, and the app calculates the rest in real time. Watch the triangle update as you type or adjust values. And if a triangle is impossible to construct, the app doesn’t just say “error.” It visually explains why the triangle can’t exist and provides a clear, simple reason. Perfect for learning, teaching, or avoiding mistakes on the job. Features • Hand‑drawn design A unique interface that looks and feels like sketching a triangle on paper. • Interactive triangle editor Tap a side or angle to edit it, then enter its value using the built‑in keyboard. • Smart geometry engine Automatically solves triangles from any valid combination of sides and angles. • Invalid triangle detection If the values don’t form a real triangle, the app shows a visual explanation and tells you exactly why it doesn’t work. • Drag‑to‑reshape Drag the triangle’s corners to shape it freely before entering side or angle values — a simple way to visualize the triangle you’re working on. • Quick shortcuts Double‑tap an angle to toggle 90°, or reset values instantly. • Step‑by‑step tutorial A friendly guided walkthrough shows you how to edit sides, adjust angles, use shortcuts, and create new triangles. Whether you’re on a construction site, at your drafting table, or studying geometry, Pythagorus doodlus gives you a playful and powerful way to understand and work with triangles. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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.