# SeamShift: Pattern Alterations

> Sewing fit math & worksheets

Canonical page: [https://chrome-stats.com/d/id6790248728](https://chrome-stats.com/d/id6790248728)

## Overview

- **ID:** `id6790248728`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Jasko Hodzic
- **Category:** Lifestyle
- **Version:** 1.0
- **Last updated:** 2026-07-21
- **First published:** 2026-07-21
- **Size:** 1.79 MB
- **Data as of:** 2026-09-12
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/seamshift-pattern-alterations/id6790248728)
- **Website:** [https://viralcrew.de/apps/seamshift](https://viralcrew.de/apps/seamshift)
- **Privacy policy:** [https://viralcrew.de/apps/seamshift/privacy](https://viralcrew.de/apps/seamshift/privacy)

## Description

Transparent alteration math, visual pattern-work steps and private measurement profiles — all offline.

SeamShift turns body measurements and finished-garment measurements into clear, repeatable pattern-alteration worksheets. Choose an alteration, see the exact formula and assumptions, follow a vector diagram, and keep the result with your sewing project. Includes full- and small-bust worksheets, waist-to-hip blending, length changes, shoulder width and a user-entered sway-back worksheet. Export PDF worksheets and CSV calculations, or create a validated JSON backup. SeamShift does not create copyrighted patterns and does not promise a perfect fit: always follow the pattern instructions and sew a test garment before cutting final fabric. No account, ads, tracking or developer server.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://viralcrew.de/apps/seamshift/privacy

## Rankings

- #1,665,016 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6790248728)