Which size do I cut?
Type your bust, waist and hip. The size finder gives your size for tops and for skirts. Try the same chart on the web with the sewing pattern size calculator.

Sewzy is a sewing app for iPhone with 76 sewing patterns in every size, a size finder that tells you which size to cut, an AI sewing coach for when you get stuck and a photo search that finds the closest pattern to something you love. 13 patterns are free.
These are real screens from Sewzy on iPhone.
Type your bust, waist and hip. The size finder gives your size for tops and for skirts. Try the same chart on the web with the sewing pattern size calculator.

Ask about the pattern you are making: fabric, size, a tricky step.

Add a screenshot and Sewzy shows the closest of its 76 patterns. How it works

Streaks, reminders and home screen widgets help you sew a little each day.


| Free | Premium | |
|---|---|---|
| Patterns | 13 (every size) | All 76 |
| PDF + written guide | Yes | Yes |
| Size finder | Yes | Yes |
| AI coach and photo search | 3 questions a day | Up to 100 a day |
| Price | $0 | $3.99 a week or $29.99 a year, 3-day free trial |
A pattern shop sells one PDF at a time, usually in a size range you still have to work out. Sewzy keeps all its patterns in one app with every size, tells you which size to cut and answers questions while you sew. If you only ever want one pattern, a single PDF can be cheaper; if you want to try many projects, an app is easier. See our round-up of sewing apps for other options.
Want to try first? Download one of the 13 free sewing patterns on this site.
For beginners the most useful features are patterns in your exact size, short written steps and someone to ask when you get stuck. Sewzy has all three: 76 patterns with every size included, a written step-by-step guide for each, a size finder and an AI sewing coach. 13 patterns are free.
Sewzy is free to download and 13 patterns are free, including the PDF in every size and the written guide. Premium opens all 76 patterns for $3.99 a week or $29.99 a year, with a 3-day free trial.
Yes. Each pattern comes as a letter-size PDF for a home printer and an A0 file for a copy shop, with every size in the same file.
Sewzy is made for iPhone and also runs on iPad. There is no Android version yet.
You type a question, or add a photo, about the pattern you are making. Sewzy sends it to Google's Gemini model and shows the answer. It is a helpful second opinion, so check it against your pattern before you cut.

Pick a pattern tonight
Download Sewzy free and start with one of the 13 free patterns.