SCCalc - Privacy Policy
Last updated: 22 May 2026 · Effective: 22 May 2026
In a sentence
SCCalc does not run advertising, third-party tracking, or first-party analytics, and jpfchang.org does not host your datasets or SCCalc project files. Your statistical work is stored on your Mac or in locations you choose.
Who publishes SCCalc
SCCalc is published by Pengfan Chang as an independent developer. Contact: sccalc-support@jpfchang.org.
What the app handles
Datasets, projects, scripts, and reports
SCCalc opens, creates, saves, and exports files you select or create on your Mac. These files may contain personal, academic, business, or confidential data depending on what you put in them. SCCalc does not upload these files to jpfchang.org.
Recent files and security-scoped bookmarks
To reopen recent projects in the macOS sandbox, SCCalc stores file paths and security-scoped bookmark data locally in user defaults. This data stays on your Mac unless you copy it or include it in a diagnostic message.
Preferences and workspace state
SCCalc stores settings such as interface preferences, SCL history, tutorial bookmarks, result display options, and recovery state locally on your Mac.
Subscriptions and purchases
Subscriptions are processed by Apple through StoreKit. SCCalc checks App Store entitlement status to unlock full access. We do not receive your payment card number, billing address, or Apple Account password.
Optional external connections
If you configure SCCalc to connect to an API, database, or external data source, requests go to the service and endpoint you choose. Review that service's privacy practices before connecting research or business data.
Support emails and diagnostics
If you contact support, we receive the information you send, such as your email address, description, screenshots, diagnostics, or sample files. Do not send confidential data unless support explicitly asks for a safe, redacted example.
Apple diagnostics
If you opt in to Apple's Share with App Developers diagnostics setting, Apple may provide aggregated or de-identified crash and performance data. You control this in macOS privacy settings.
Required-reason API disclosures
Apple's privacy manifest requires SCCalc to declare why it uses certain on-device APIs:
- -UserDefaults (CA92.1) - stores preferences, recent-file metadata, subscription state, tutorials, console state, and workspace settings.
- -File metadata (C617.1, 3B52.1) - reads metadata for files inside SCCalc storage and files or folders the user chooses.
- -Disk space (E174.1) - checks available storage and file-system capacity for diagnostics, import, export, and recovery workflows.
- -System boot time (35F9.1) - measures elapsed time for diagnostics and performance-related timing.
What we do not do
- -We do not sell personal information.
- -We do not use advertising SDKs or third-party tracking SDKs.
- -We do not host or review your SCCalc datasets unless you deliberately send a file to support.
Your choices and rights
Most SCCalc data is under your control because it is stored locally or in files you choose. You can delete SCCalc files, clear recent projects, remove the app, revoke file permissions through macOS, or contact support to delete support correspondence where legally required.
For privacy questions or requests under applicable law, write to sccalc-support@jpfchang.org.
