Drypoint vs Planned Experiment

Drypoint is a calm, beautiful Markdown editor for people who love to write. What you type is what you see — headings, bold, links, and lists style themselves live as you go, with no edit-and-preview toggle to break your flow. Your words stay yours. Every note is plain Markdown text on disk — never a locked-in proprietary format — so you can read, back up, or move your writing anywhere, for as long as you like. WRITE IN TRUE LIVE PREVIEW • One distraction-free surface — Markdown styles itself as you type • Full Markdown: headings, bold, italic, links, quotes, code, tables, task lists • Opens even huge notes instantly and stays smooth however much you write • Beautiful themes and refined typography, tuned for long writing sessions EVERYWHERE YOU WRITE • Native apps for iPhone, iPad, and Mac — designed for each, not ported • Optional iCloud sync keeps every note in step across your devices • Home Screen and Lock Screen widgets, a Mac menu bar app, and an Apple Watch companion • Siri, Shortcuts, and Spotlight — capture and find notes hands-free PRIVATE BY DESIGN • Local-first: works fully offline, and your notes stay on your device until you choose to sync • Lock any note with a password — the text and its attachments are protected with strong AES-GCM encryption that only your password can open • The same password unlocks a note on every device; use Face ID or Touch ID for instant access • No account, no ads, no tracking, no analytics — ever AI ON YOUR TERMS • On-device intelligence that runs privately, right on your iPhone, iPad, or Mac • Or connect your own AI provider • AI is always opt-in, and your text only ever goes where you choose to send it ORGANIZE WITHOUT FUSS • Folders, tags, and fast full-text search surface anything in a keystroke • Attach images and files right alongside your words • Export to 10 formats — PDF, HTML, Word, Rich Text, and more — in a tap DRYPOINT PRO Unlock the full experience: iCloud sync, AI, per-note encryption, every export format, and more. Start free, then choose monthly for full flexibility or yearly for the best value. Subscription Details Drypoint Pro is an auto-renewable subscription, offered as a monthly or yearly plan. Prices are shown in the app and vary by region. Payment will be charged to your Apple Account at purchase confirmation. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current subscription period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can turn off auto-renewal at any time in your Account Settings on the App Store after purchase. Terms of Use (EULA): https://drypoint.app/terms.html Privacy Policy: https://drypoint.app/privacy.html

PlanExp is a complete environment for design of experiments, ordinary-least-squares regression, and response-surface work — from the planning matrix to 2D contours, 3D surfaces, and ternary diagrams. Build a plan, enter replicate measurements, fit a polynomial model, test it, and read the optimum inside the coded cube [−1, +1]^k. Factor coding follows the classical DOE convention x = (X − X0) / ΔX. WHAT YOU CAN DO • Choose a design: one-factor grid, 2^k and 2^(k−p), Box–Draper B-D13, rotatable / face-centered / inscribed CCD, Box–Behnken, Plackett–Burman, Doehlert, 3^k, Taguchi arrays, simplex lattice for mixtures, D-optimal, Latin hypercube, and definitive screening. • Fit OLS models with main effects, two-factor interactions, and quadratic terms. Optional three-way interactions for 2^k. • Run Cochran’s C for variance homogeneity, Student’s t on coefficients, and Fisher’s F for lack of fit. See R², adjusted R², and RMSE. • Drop insignificant terms and refit. Canonical analysis locates the stationary point; a constrained search reports the best feasible point in the experimental region. • Plot response curves, filled contours, interactive 3D surfaces, and ternary (mixture) diagrams in natural units. FREE AND FULL The free version includes a one-factor grid, full factorial 2^k with up to three factors, two parallel runs, PDF reports, and JSON of your own project. Local gallery save is always free. The full version unlocks every design (including a custom matrix), up to 12 parallel runs, and CSV export — a single lifetime purchase. WHO IT IS FOR Researchers, process engineers, chemists, metallurgists, and students who plan laboratory or plant trials and need transparent classical statistics rather than a black-box optimizer. PlanExp continues the lineage of the PlanExp 2³ and PlanExp B-D13 desktop tools, rewritten for iPhone, iPad, and Mac with a shared math core.