What we collect (almost nothing) and why.
Last updated: March 25, 2026
Smrt Stem is an offline audio tool. Your audio files never leave your computer. We collect the bare minimum needed to manage software licenses, and nothing else.
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.
License Activation
When you activate a license key, the following information is sent to our payment processor (LemonSqueezy) to verify your purchase:
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:
~/Library/Application Support/S2pd Audio/Smrt Stem/)~/.smrt-stem-trial)This data stays on your machine and is never transmitted anywhere.
Smrt Stem is an offline application. The only network connections it makes are:
No other network connections are made. Audio processing is entirely local.
All application data is stored locally on your computer:
~/Library/Application Support/S2pd Audio/Smrt Stem/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.
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.
Smrt Stem is a professional audio tool and is not directed at children under 13. We do not knowingly collect information from children.
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).
If you have questions about this privacy policy:
S2pd Audio
Email: hello@s2pdaudio.com
Web: s2pdaudio.com
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