Privacy Policy

What Smrt Stem Does

Smrt Stem analyzes audio stem files for quality control purposes. All audio analysis happens locally on your machine. No audio data is uploaded, transmitted, or stored on any server.

Data We Collect

License Activation

When you activate a license key, the following information is sent to our payment processor (LemonSqueezy) to verify your purchase:

• Your license key
• A machine identifier (your computer's hostname and platform, e.g. "Seans-Mac-Pro-darwin")

This is used solely to activate and validate your license. We do not collect your name, email address, or any other personal information through the app itself. LemonSqueezy holds your purchase information (name, email, payment details) as part of the transaction. Their privacy policy is available at lemonsqueezy.com/privacy.

Trial System

When you start a free trial, Smrt Stem stores the trial start date locally on your computer in the following locations:

• Application support directory (~/Library/Application Support/S2pd Audio/Smrt Stem/)
• A hidden file in your home directory (~/.smrt-stem-trial)
• An encrypted local file using your system's keychain

This data stays on your machine and is never transmitted anywhere.

What We Do NOT Collect

• Audio files or any content you analyze
• Usage analytics or telemetry
• Crash reports
• Browsing or search history
• Location data
• Advertising identifiers
• Any data from other applications on your computer

Network Connections

Smrt Stem is an offline application. The only network connections it makes are:

• License activation — A single HTTPS request to LemonSqueezy's API when you enter a license key
• License validation — A brief HTTPS request to LemonSqueezy's API on app launch to confirm your license is still valid (if validation fails due to network issues, the app trusts your cached license and continues working)

No other network connections are made. Audio processing is entirely local.

Data Storage

All application data is stored locally on your computer:

• License information: ~/Library/Application Support/S2pd Audio/Smrt Stem/
• Settings and preferences: Browser localStorage within the app
• Temporary audio files (for playback): System temp directory, deleted on app close

Third Parties

We use LemonSqueezy (Lemon Squeezy, Inc.) as our merchant of record for payment processing and license key management. When you purchase Smrt Stem, LemonSqueezy processes your payment and generates your license key. We do not have direct access to your payment details (credit card numbers, bank information).

We do not use any analytics services, advertising networks, or tracking tools.

Data Retention

We do not store any of your data on our servers. Your license information is managed by LemonSqueezy as part of your purchase record. Local application data can be removed at any time by deleting the application and its support files.

Children's Privacy

Smrt Stem is a professional audio tool and is not directed at children under 13. We do not knowingly collect information from children.

Changes to This Policy

If we make changes to this privacy policy, we will update the "Last updated" date above. For significant changes, we will notify users through the application or via email (if you provided one through your LemonSqueezy purchase).

Contact

If you have questions about this privacy policy:

S2pd Audio
Email: hello@s2pdaudio.com
Web: s2pdaudio.com