SewLens Privacy Policy

Effective date: November 10, 2026

SewLens ("SewLens: Sewing Pattern Maker") is published by Brock Hall (OrehRuoy). Contact: hallanhype@gmail.com

Overview

SewLens drafts sewing patterns from your body measurements and a photo of a garment style you like. SewLens does not require an account. There are no ads, and we do not use your data to track you across other companies' apps or websites.

Information we collect and how it is used

Photos: when you take or choose a photo, it is sent to Google Gemini through our Firebase Cloud Functions so that SewLens can choose a matching sewing design. Photos are used only for that purpose and are not stored by us.
Body measurements: the measurements you enter, along with your chosen design, options, units, and paper size, are sent through our Firebase Cloud Functions to draft your pattern.
Analytics: Firebase Analytics (Google Analytics for Firebase) records how the app is used, such as which steps are completed and when a pattern is drafted, so we can understand usage and improve the app.
Fit feedback: if you choose to send fit feedback in the app, it is stored in Google Cloud Firestore (Firebase). It is not linked to your identity and is used only to improve how well patterns fit.
Crash data: Firebase Crashlytics records crash reports and related technical information about your device and the app, so we can find and fix problems.
Purchases: in-app purchases are processed by Apple (App Store) and Google (Google Play). We receive a purchase confirmation so the app can unlock what you bought. We do not see or receive your payment card details.
Support email: if you email us, we receive your email address and message so we can reply.

Third-party services

Google Gemini (Google AI) — design suggestion from your photo — Google Privacy Policy
Firebase Cloud Functions, Cloud Firestore (fit feedback), Firebase Analytics, and Firebase Crashlytics — Firebase Privacy
Apple App Store — purchase processing on iPhone and iPad
Google Play and Google Play Billing — purchase processing on Android

These providers process data under their own policies. We do not sell your personal information.

Children

SewLens is a general audience sewing tool and is not directed at children. We do not knowingly collect personal information from children under 13 (or under 16 where a higher age of digital consent applies).

Data retention

Photos are not stored by us after they are used to choose a design. Data kept on your device remains until you delete the app or clear its data. Fit feedback you choose to send is stored in Cloud Firestore and is not linked to your identity. Google (including Firebase), Apple, and Google Play keep data according to their own retention policies. We keep support emails only as long as needed to help you.

Your choices

Use SewLens without creating an account.
Deny camera or photo-library permission at any time in your device settings.
Delete the app to remove its data from your device.
Email us to ask a question about your data or to request deletion of support correspondence.

Changes

We may update this policy. The effective date above will change when we do.

Contact

Brock Hall — hallanhype@gmail.com