Endel.io (Domain) Investigation Report
Generated on Apr 22, 2026
Why we think so?
Endel.io is a tech company focused on AI-powered sound wellness applications with over 317,000 monthly visits, mainly from the United States. It uses a variety of established technologies including Amazon, Google Analytics, and Facebook tools. The domain was created in 2017 and maintains valid SSL certificates. Endel holds several active US trademarks tied to its brand and services, which include adaptive soundscapes for focus and relaxation. News and industry reports show the company is legitimate, with significant venture funding and collaborations. User reviews note effectiveness in sleep and focus but highlight issues such as billing disputes and app usability bugs. There are no known lawsuits or fraud reports, though billing complaints and data tracking practices advise careful consideration before subscribing.
Risk Insights
Established Domain and Security
- Domain created in 2017 with continuous registration.
- Valid SSL certificate issued by Amazon RSA.
- Secure DNS infrastructure supports trust.
Legitimate Business Backing
- Multiple active US trademarks registered.
- Raised $15 million in Series B funding in 2022.
- Partnered with Universal Music Group.
User Feedback Highlights
- Effective soundscapes reported for focus and sleep.
- Noted billing disputes and subscription concerns.
- Some app usability bugs and onboarding confusion.
Category Scores
Red Flags & Warnings
- Multiple user reports of billing disputes and challenges with subscription refunds indicate an area of concern.
- Extensive data collection and tracking through third-party SDKs may raise privacy concerns for sensitive users.
Detailed Checks & Insights
0-100 Scale
Domain Authenticity and Security
Score: 90
Domain Authenticity and Security
"Long registration history and proper SSL strengthen trustworthiness."
Reason: The domain originated in 2017 and has a valid SSL certificate, indicating established ownership and secure access.
Technological Infrastructure
Score: 85
Technological Infrastructure
"Use of reputable services supports legitimacy."
Reason: The website uses well-known hosting, analytics, and content delivery technologies from Amazon, Google, and Facebook.
Legal and Trademark Status
Score: 90
Legal and Trademark Status
"This signals ownership and protection of intellectual property."
Reason: Endel holds multiple active, registered US trademarks covering its products and services.
Reputation and Public Presence
Score: 80
Reputation and Public Presence
"No blacklists or phishing reports found; user reviews note effectiveness with some issues."
Reason: Positive industry news coverage and funding rounds show a credible market position.
User Feedback and Complaints
Score: 60
User Feedback and Complaints
"Issues do not imply fraud but suggest careful review before purchase."
Reason: Users report billing disputes and app usability problems, raising concerns that deserve caution.
Safety and Scam Blacklist Checks
Score: 100
Safety and Scam Blacklist Checks
"No technical red flags detected on safety databases."
Reason: The domain is not listed in any scam or phishing blacklists such as Google Safe Browsing or crypto scam databases.
Your Next Steps
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1
Review the billing and subscription management policies carefully before subscribing to avoid unexpected charges.
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2
Consider trying the app with a trial or free version first to assess suitability and usability.
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3
Check for user feedback regularly to monitor any emerging issues or updates.
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4
Verify that your privacy preferences align with the data tracking practices disclosed by the app.
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5
Use official app stores and trusted sources for downloads to avoid counterfeit versions.
Key Evidence & Citations
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WHOIS and SSL data for endel.io
⤷ Shows long domain history with valid SSL cert and secure DNS.
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Technology and Traffic Report for endel.io
⤷ Details site technologies, traffic, and ranking data.
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US Trademark Registry for ENDEL
⤷ Confirms active trademarks owned by Endel Sound GmbH.
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News reports and articles about Endel
⤷ Reports funding and partnerships validating company legitimacy.
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User reviews and complaints summary
⤷ Documents billing complaints and app performance feedback.
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