SewGrader is built on a simple principle: your patterns are yours. We designed the app so that your data never leaves your device — and this policy explains exactly what that means in practice.
The short version: SewGrader does not collect, transmit, store, or share any personal information about you. Everything you create stays on your device. There is no account, no server, no cloud sync, and no advertising. We have no idea who you are — and by design, we don't need to know.
This Privacy Policy describes how SewGrader ("the App", "we", "our") handles information in connection with your use of the SewGrader application on Apple platforms (iOS, iPadOS, macOS). It applies to the App Store release, any TestFlight beta distributions, and any future versions unless a separate policy is issued at that time.
By downloading or using SewGrader, you acknowledge that you have read and understood this policy. If you disagree with anything described here, your only recourse is to discontinue using the App — though given that we collect nothing, there is very little to disagree with.
We do not collect any personal data. Specifically, SewGrader does not collect, process, or transmit:
There are no registration forms, no login screens, and no network calls made by the App to any server operated by us. The App functions entirely offline and requires no internet connection to operate.
All content you create in SewGrader — projects, pattern pieces, the Piece Library, settings, and any images you import — is stored exclusively on your device using the standard local storage mechanisms provided by the Apple operating system.
This means:
iCloud Backup: iOS and iPadOS may include the App's local data in your personal iCloud Backup as part of Apple's standard system backup behaviour, if you have iCloud Backup enabled. This is governed entirely by Apple's own privacy policy and settings, not by SewGrader. We do not initiate, control, or have access to any iCloud Backup. You can exclude any app from iCloud Backup in Settings → [Your Name] → iCloud → iCloud Backup → Manage Backup.
SewGrader requests the following device permissions. In each case, the permission is used solely for the feature described, and no data obtained through these permissions is stored beyond your device or transmitted anywhere.
| Permission | Why it's needed | Data handling |
|---|---|---|
| Photo Library Optional |
Allows you to import a photo of a paper pattern to use as a tracing reference on the canvas. You choose the specific photo; the App cannot browse your full library without your action. | The selected image is loaded into the App's local canvas only. It is never uploaded, analysed externally, or retained outside your project file. |
| Camera Optional |
Allows you to take a photo of a paper pattern directly from within the App and import it immediately as a tracing reference. | Images captured through the App are stored only in your local project file. They are never sent to any external service or stored in your system Photo Library unless you explicitly save them there. |
| Local Network Not requested |
Not used. | SewGrader does not make any network requests. |
| Notifications Not requested |
Not used. SewGrader does not send any notifications. | — |
| Location Not requested |
Not used. | — |
| Contacts / Calendar Not requested |
Not used. | — |
You can review and revoke any permission at any time in Settings → Privacy & Security on your device. Revoking camera or photo library access will disable the image import feature but will not affect any other functionality.
SewGrader is distributed through Apple's App Store and, during development phases, through TestFlight. These are Apple's services, and their operation is governed by Apple's Privacy Policy. The following applies:
SewGrader does not integrate any third-party analytics SDK (such as Firebase Analytics, Mixpanel, Amplitude, Sentry, Crashlytics, or similar). There is no code in the App that observes your behaviour, counts feature usage, or sends crash reports to our servers.
Apple provides developers with optional, aggregated, anonymised analytics through App Store Connect (such as total installs, average session length by country, and crash rates) only when individual users have opted in to sharing diagnostics with developers through their iOS settings. This data is:
We may use this aggregated, anonymised data solely to understand which iOS versions are most common and to prioritise bug fixes. It cannot be used to identify you.
SewGrader does not share any data with any third party because it does not collect any data to share. The App contains no advertising SDKs, no social login integrations, no in-app purchase analytics, and no remote configuration services.
The App may in the future include optional features that involve external services (for example, cloud pattern sync or community sharing). If such features are introduced, this policy will be updated before the feature is released, and participation will always be explicitly opt-in. You will not be automatically enrolled.
SewGrader does not knowingly collect personal information from anyone, including children under the age of 13 (or under 16 where applicable under local law). Because the App collects no personal data whatsoever, it presents no particular risk to younger users from a data privacy standpoint.
The App is not specifically directed at children, and its App Store rating category reflects general suitability. Parents or guardians with questions about their child's use of the App are welcome to contact us (see Section 11).
Under applicable data protection regulations — including the EU General Data Protection Regulation (GDPR), the California Consumer Privacy Act (CCPA), and similar frameworks — you have rights regarding your personal data. These include the right to access, correct, delete, and export data held about you.
Because SewGrader does not collect or hold any personal data about you, there is no data for us to provide, correct, or delete on request. Your pattern files and all other content exist only on your device and are entirely under your control. You can delete them at any time by deleting the App or individual projects within it.
If you are a resident of the European Economic Area, you have the right to lodge a complaint with your local data protection supervisory authority. Given the nature of this App, however, we do not anticipate any grounds for such a complaint.
If you believe we have inadvertently collected data about you, or if you have a data-related concern, please contact us (see Section 11) and we will respond promptly.
We may update this Privacy Policy from time to time, for example if we add features that involve new data handling, or to reflect changes in applicable law. When we make material changes, we will:
We encourage you to review this policy periodically. Continued use of the App after a policy change constitutes acceptance of the updated policy.
If any future version of SewGrader introduces optional features that involve personal data (such as account creation, cloud sync, or community features), those features will always be explicitly opt-in and accompanied by a clear, plain-language explanation of what data is involved and why.
If you have any questions, concerns, or requests relating to this Privacy Policy or the handling of any data in connection with SewGrader, you can reach us at:
Email: developer@virtalia.cz
Web: sewgrader.com
We aim to respond to all privacy enquiries within 30 days. For questions about your App Store purchase or account, please contact Apple Support directly.