Nexo Earn Calculator ("we," "us," or "our") operates the Nexo Earn Calculator application (the "Service"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our Service.
By using the Service, you agree to the collection and use of information in accordance with this Privacy Policy. If you do not agree with our policies and practices, please do not use our Service.
When you create an account or use our Service, we may collect the following personal information:
When you access our Service, we automatically collect:
We use the collected information for the following purposes:
For users in the EU/EEA, we process your personal data under the following lawful bases:
| Processing Activity | Lawful Basis |
|---|---|
| Creating and managing your account; authentication and session management; storing portfolio and calculation data; processing subscription and payments; tracking export allowances; email verification and password reset; storing your display preferences | Contract performance — processing is necessary to provide the Service you have signed up for (Article 6(1)(b)) |
| Retaining payment and subscription records for tax and accounting purposes | Legal obligation — required by applicable financial and tax laws (Article 6(1)(c)) |
| Security and login attempt logging; IP address collection at sign-up and login; audit logging of account and data changes; admin activity and security alert logging; internal analytics event tracking | Legitimate interests — fraud prevention, security monitoring, and service improvement. Our interests are balanced against your rights and do not override them (Article 6(1)(f)) |
| Google Analytics 4 cookies and tracking; push notification delivery; marketing and waitlist communications | Consent — you may withdraw consent at any time via cookie settings or account preferences without affecting the lawfulness of prior processing (Article 6(1)(a)) |
Where we rely on legitimate interests, you have the right to object to that processing at any time by contacting us at contact.nxocalc@theo.zone. We will cease processing unless we can demonstrate compelling legitimate grounds that override your rights.
Your data is stored on secure servers. Our infrastructure includes:
We implement appropriate technical and organizational security measures including:
While we implement industry-standard security measures, no method of transmission over the Internet or electronic storage is 100% secure. We cannot guarantee absolute security of your data. Please use strong, unique passwords and enable two-factor authentication when available.
We do not sell, trade, or rent your personal information to third parties. We may share your information only in the following circumstances:
We share data with trusted third-party service providers who assist us in operating our Service:
| Service Provider | Purpose | Data Shared |
|---|---|---|
| Mollie Payments | Payment processing | Payment information, email |
| Hosting Provider (e.g., Vercel, AWS) | Infrastructure and hosting | All account and usage data |
| Google Analytics | Usage analytics | Anonymized usage data, IP addresses |
| Sentry | Error tracking | Error logs, device information |
| Email Service Provider | Transactional emails | Email address, name |
We may disclose your information if required by law or in response to:
If we are involved in a merger, acquisition, or sale of assets, your information may be transferred. We will notify you before your information is transferred and becomes subject to a different Privacy Policy.
Depending on your location, you have various rights regarding your personal data under GDPR (EU/EEA), CCPA (California), and other privacy laws.
If you are located in the European Economic Area, you have the following rights:
If you are a California resident, you have the following rights:
To exercise any of these rights, please:
Response Time: We will respond to verified requests within 30 days (GDPR) or 45 days (CCPA).
You can opt-out of marketing emails by:
We use browser cookies, localStorage, and sessionStorage (collectively referred to as "storage technologies") to operate and improve the Service. Unlike cookies, localStorage and sessionStorage data is not transmitted to our servers automatically — it is stored locally in your browser. However, we disclose all use of these technologies below.
| Cookie Type | Purpose | Duration |
|---|---|---|
| Essential Cookies | Authentication, security, session management | Session/Persistent |
| _ga | Analytics — Google Analytics 4 client identifier | 2 years |
| _gid | Analytics — Google Analytics 4 daily session tracking | 24 hours |
| _gat | Analytics — Google Analytics 4 request throttle | 1 minute |
| Preference Cookies | Remember your settings and preferences | Persistent |
| Security Cookies | CSRF tokens, rate limiting | Session |
You can control cookies through:
Note: Disabling essential cookies may affect Service functionality.
In addition to cookies, we use localStorage and sessionStorage to store data locally in your browser. This data is never automatically transmitted to our servers, but is read by the app on each visit to restore your session and preferences.
| Key Name | Storage Type | Purpose | Duration |
|---|---|---|---|
| nexo_cookie_consent | localStorage | Stores your cookie consent preferences and policy version | Persistent (until cleared) |
| nexo_access_token | localStorage | JWT access token used to authenticate API requests | Until logout or expiry |
| nexo_refresh_token | localStorage | JWT refresh token used to renew expired access tokens | Until logout |
| nexo_currentUser | localStorage | Cached user profile data (name, tier, preferences) to restore session without a server round-trip | Until logout |
| nexo_rates | localStorage | Cached asset interest rates to reduce API calls | ~5 minutes (auto-refreshed) |
| nexo_prices | localStorage | Cached cryptocurrency USD prices to reduce API calls | ~5 minutes (auto-refreshed) |
| pending_upgrade | sessionStorage | Temporary state during a subscription payment redirect to Mollie and back | Session (cleared on completion or cancellation) |
| pending_upgrade_time | sessionStorage | Timestamp of a pending subscription payment (used to detect stale sessions) | Session |
| pending_one_time_purchase | sessionStorage | Temporary state during a one-time Calculator Report payment redirect | Session (cleared on completion or cancellation) |
| pending_one_time_purchase_time | sessionStorage | Timestamp of a pending one-time payment (used to detect stale sessions) | Session |
You can clear all localStorage and sessionStorage data at any time via your browser's developer tools or by clearing site data in your browser settings. Note that clearing nexo_access_token and nexo_refresh_token will log you out of the Service.
Our Service integrates with and links to third-party services:
Our Service may contain links to external websites (e.g., NEXO.com). We are not responsible for the privacy practices of these sites. Please review their privacy policies.
Your information may be transferred to and processed in countries other than your own. We ensure appropriate safeguards are in place:
Our Service is not intended for individuals under the age of 18. We do not knowingly collect personal information from children.
If you are a parent or guardian and believe your child has provided us with personal information, please contact us immediately at contact.nxocalc@theo.zone. We will delete such information from our records.
We retain your personal information for as long as necessary to fulfill the purposes outlined in this Privacy Policy, unless a longer retention period is required by law.
When you delete your account:
We may update this Privacy Policy from time to time. Changes will be effective when posted on this page with a new "Last Updated" date.
We will notify you of significant changes by:
Your continued use of the Service after changes constitutes acceptance of the updated Privacy Policy.
If you have questions, concerns, or requests regarding this Privacy Policy or our privacy practices, please contact us:
Nexo Earn Calculator | nxocalc
Email: contact.nxocalc@theo.zone
Support: contact.nxocalc@theo.zone
Website: https://nxocalc.theo.zone
For GDPR-related inquiries, you can contact our Data Protection Officer at:
Email: contact.nxocalc@theo.zone
If you are located in the EU/EEA and have concerns about our data practices, you have the right to lodge a complaint with your local data protection authority. A list of authorities can be found at: https://edpb.europa.eu/about-edpb/about-edpb/members_en
Some browsers transmit "Do Not Track" (DNT) signals. Our Service does not currently respond to DNT signals. We honor opt-out preferences set through cookie settings and privacy controls.
California residents can request information about personal information disclosed to third parties for direct marketing purposes. Contact us at contact.nxocalc@theo.zone for such requests (limit: one request per year).
Nevada residents have the right to opt-out of the sale of certain personal information. We do not sell personal information as defined by Nevada law. For questions, contact contact.nxocalc@theo.zone.
© Nexo Earn Calculator | nxocalc. All rights reserved.
This Privacy Policy was last updated on 01 Mar, 2026.