Contact & Support
Thank you for using OtoTheory.
If you have any questions or issues, please don't hesitate to reach out.
📧 Contact Information
Email: support@ototheory.com
Response Time: We typically respond within 2 business days.
(Excluding weekends and holidays)
🔍 Before You Contact Us
Frequently Asked Questions (FAQ)
Many common questions are answered on our FAQ page. Please check for:
- How to cancel subscription
- How to delete account
- Data retention period
- Difference between Shaped and Sounding
- Export features
- Offline usage
💬 Common Inquiries
🎵 Features
Q. Which features are Free/Pro?
→ See our Pricing page (coming soon) for a detailed comparison table.
💳 Billing & Subscription
Q. I want to cancel my subscription
→ Go to Apple ID > Subscriptions > OtoTheory to cancel.
Q. I want a refund
→ App Store purchases follow Apple's refund policy. Visit Apple's support page
🔐 Account & Data
Q. I want to delete my account
→ Go to Settings > Delete Account in the app, or email us at support@ototheory.com.
Q. Can I backup my data?
→ Pro version includes automatic cloud sync backup. Free version is local storage only.
🐛 Issues & Troubleshooting
Q. App won't launch / crashes
→ Please try:
- Force quit and restart the app
- Restart your device
- Update to the latest version from App Store
- If issue persists, contact support@ototheory.com
Q. No sound output
→ Please check:
- Device volume level
- Silent mode is off
- Sound works in other apps
- Restart the app
📝 Information to Include When Contacting Us
For faster support, please provide:
- Platform: iOS app / Web version
- Version: App version number (shown in Settings)
- Device: iPhone/iPad model, OS version
- Issue Details: When it started, what actions trigger it
- Screenshots: If possible, please attach
🌐 Other Resources
💌 Feedback & Feature Requests
We welcome your feedback and suggestions to make OtoTheory better.
Feature requests, UI improvements, or any other ideas are appreciated.
Provider: TH Quest
Location: Kamakura, Kanagawa, Japan
Email: support@ototheory.com

