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Frequently Asked Questions

Quick answers to common questions about Petal Metrics.

Migration (Legacy Customers)​

Do I need to create a new account?​

If you're a legacy customer, an account has been created for you using your original order email. Use "Forgot Password" at petal.tech/login to set your password.

Will my old API key still work?​

Yes, if you had an API Developer subscription. During the 30-day grace period (until February 27, 2026), your key works normally. After that, you need an active subscription at petal.tech/pricing.

What happens to my Metrics 0.5.3 license?​

Nothing changes. Metrics 0.5.3 continues to work as it always has. Only Metrics 1.0+ requires a subscription.

Which plan do I need for API access?​

Standard ($39.99/mo) or Advanced ($79.99/mo). The Basic plan does not include API access.

I'm getting SUBSCRIPTION_EXPIRED but I just subscribed​

There may be a brief delay after payment processing. Wait a few minutes and try again. If the issue persists, contact support@petal.tech.

For more details, see the Legacy Customer Migration Guide.

General​

What Muse headbands are supported?​

Petal Metrics supports:

  • Muse 2 - EEG, accelerometer, gyroscope
  • Muse S - EEG, accelerometer, gyroscope, PPG (heart rate)
  • Muse S (Gen 2) - Same as Muse S

Original Muse (2014) is not supported as it uses a different protocol.

What operating systems are supported?​

  • Windows 10 or later (64-bit)
  • macOS 11 (Big Sur) or later (Apple Silicon and Intel)
  • Linux Ubuntu 22.04 or equivalent (64-bit)

Is there a mobile app?​

No, Petal Metrics is a desktop application only. For mobile Muse apps, see the official Muse app or third-party alternatives.

Can I use multiple Muse headbands simultaneously?​

Currently, Petal Metrics supports one connected Muse at a time.

Subscription & Billing​

How do I cancel my subscription?​

  1. Go to petal.tech/account/subscription
  2. Click Cancel Subscription
  3. Confirm cancellation

Your access continues until the end of your paid period.

Do you offer refunds?​

We offer refunds within 7 days of purchase if you haven't used the software. Contact support@petal.tech.

Can I switch between plans?​

Yes! Upgrade anytime with prorated billing. Downgrade at the end of your current period.

Do you offer student/academic discounts?​

Contact support@petal.tech with your academic credentials for information about educational pricing.

Is there a free trial?​

We don't currently offer a free trial. However, we do offer a 7-day refund policy.

Features​

What's the difference between OSC, LSL, and Webhook?​

ProtocolBest ForReal-timeRequires Network
OSCMusic/visual software, local appsYesLocal or LAN
LSLResearch, multi-device syncYesLocal or LAN
WebhookCloud services, web appsNear real-timeInternet

Can I record data while streaming?​

Yes! All output methods (CSV, OSC, LSL, Webhook) can run simultaneously.

What sample rates are supported?​

  • EEG: 256 Hz (fixed by Muse hardware)
  • Accelerometer: 52 Hz
  • Gyroscope: 52 Hz
  • PPG: 64 Hz (Muse S only)

Can I filter the EEG data?​

Signal filtering is available on the Advanced plan ($79.99/mo). This includes bandpass filters, notch filters, and artifact rejection. Basic and Standard plans receive raw data.

What's the latency of the streaming?​

  • OSC/LSL: ~10-20ms typical (local)
  • Webhook: ~50-200ms typical (depends on network/server)

Technical​

How is my device ID generated?​

Device IDs are generated from hardware identifiers (CPU, network adapter, disk) to uniquely identify your computer. This prevents unauthorized sharing of accounts.

Does Petal Metrics work offline?​

Yes, with limitations:

  • Must have validated within the last 24 hours (subscription) or 12 hours (license)
  • After that, internet connection is required to continue

Where is my data stored?​

  • CSV files: In the folder you select
  • Streamed data: Sent directly to your chosen destination
  • We don't store your Muse data on our servers

Is my data encrypted?​

  • In transit: All API calls use HTTPS
  • At rest: Local cache files are encrypted with your device-specific key

What ports does Petal Metrics use?​

  • OSC: Configurable (default 5000, UDP)
  • LSL: 16571-16600 (TCP/UDP)
  • Webhook: Outbound HTTPS (443)

Troubleshooting​

Why won't my Muse connect?​

See Troubleshooting → Connection Issues.

Why is my signal quality poor?​

See Troubleshooting → Signal Quality Issues.

Where are the log files?​

Log files are located at:

  • Windows: %APPDATA%\tech.petal.metrics\logs\
  • macOS: ~/Library/Application Support/tech.petal.metrics/logs/
  • Linux: ~/.config/tech.petal.metrics/logs/

How do I report a bug?​

Email support@petal.tech with:

  • Description of the issue
  • Steps to reproduce
  • Operating system and version
  • Petal Metrics version
  • Relevant log files

Account​

How do I reset my password?​

  1. Go to petal.tech/login
  2. Click Forgot password?
  3. Enter your email
  4. Check your inbox for reset link

Can I change my email address?​

Contact support@petal.tech to change your account email.

How do I delete my account?​

Contact support@petal.tech to request account deletion. Active subscriptions must be canceled first.

Still have questions?​

Contact us at support@petal.tech