PatternPlot
Support
PatternPlot for iPad · Last updated: 5 July 2026
PatternPlot turns a paper sewing pattern into an editable, true-scale vector on your iPad, then deterministically grades one base size into a full size run. This page answers the most common questions and tells you how to reach a human.
Contact us
Email amtyurin@gmail.com — we usually reply within 2–3 business days. Please include your iPad model and iPadOS version, and a screenshot if you can, so we can help faster.
Getting started
- No account, no sign-in. Your work stays on your iPad; nothing is uploaded for storage.
- Requirements: iPad running iPadOS 17 or later. Apple Pencil improves precision but is not required — every action works with finger and numeric entry.
- Trace: import a photo of your paper pattern (or, on a physical iPad, scan with the document camera), tap the four corners of a known rectangle and enter its real size to calibrate to true scale, then tap along the edge to trace.
- Edit: add or move points, add seam allowance, notches, and grainline.
- Export: tiled A4/Letter or A0 PDF with registration marks and a 50 mm calibration square — free, no subscription required.
Frequently asked questions
What is free, and what needs a subscription?
Tracing, vector editing, seam allowance, notches, grainline, and tiled/A0 PDF export are free forever — no purchase required. The only paid feature is Pro Grading: deterministic full-size-run grading, the nested-grade overlay, grade-rule starter tables, and a deterministic QA report.
How much is Pro Grading, and is there a trial?
Pro Grading is an auto-renewable subscription at US$79.99 per year, with a 7-day free trial for new subscribers. Prices in other regions are shown in the App at purchase. Payment is charged to your Apple ID; it renews automatically unless you turn off auto-renew at least 24 hours before the period ends.
How do I restore a purchase or manage/cancel my subscription?
Restore: open the Pro paywall (Grade demo → Unlock Pro) and tap Restore Purchases.
Manage or cancel: on your iPad open Settings → [your name] → Subscriptions, choose PatternPlot, and manage or cancel there. Deleting the app does not cancel a subscription.
My printed pattern isn't true scale.
Print the exported PDF at 100% / Actual Size (not "Fit to page"), then measure the 50 mm calibration square on the printout with a ruler. If it isn't exactly 50 mm, your printer is scaling — turn off any auto-fit or margin scaling and reprint. Always verify the calibration square before cutting fabric.
How accurate is grading? Does AI change my measurements?
All geometry — every coordinate, seam allowance, notch, and graded measurement — is computed deterministically on your device. The optional AI-assisted advisory (Pro) only turns plain-English requests into suggestions and quality-check warnings; it is advisory only and never sets or alters your measurements. The grade-rule starter tables are synthetic starting points you edit — not a validated size library. PatternPlot flags when a size drifts beyond a safe grade range so you can re-check proportions before cutting.
Where are my files? How do I back them up?
Your current project autosaves on-device and is restored when you reopen the app. You can
also Save or Open a .patternplot file from the
Export screen (via the Files app), which is how you back up or move projects between devices.
What data leaves my device?
By default, none. Only if you use an optional AI-assisted feature does the app send a structured, non-personal pattern summary plus your typed request to our processing service, which forwards it to Anthropic (Claude) to return advice. No pattern photo is sent, and it is processed transiently and not stored. Full detail is in the Privacy Policy.
Report a problem or request a feature
Email amtyurin@gmail.com with what you were doing,
what you expected, and what happened. Bug reports about a graded size that doesn't fit are our
highest priority — please attach the .patternplot file if you can.