Overview
This Privacy Policy applies to TI-84 Calculator Online (accessible at ti84.net). We are committed to protecting your personal information and being transparent about what data we collect when you visit our website.
We are not in the business of selling your data. We are in the business of making a great free calculator. Period.
Short version: We do not collect your name, email address, or any personal information unless you choose to contact us. The calculator itself stores nothing about you.
What We Collect
1. Automatically Collected Data
Like most websites, our server logs basic technical information when you visit. This includes:
- Your general geographic region (country-level, not your exact location)
- Your browser type and version (e.g., Chrome 120, Safari 17)
- Your device type (desktop, mobile, tablet)
- The page you visited and how long you spent on it
- Referring website (the site that linked you here, if any)
This data is anonymous. We cannot identify who you are from this information.
2. Analytics
We may use a privacy-friendly analytics tool (such as Google Analytics or a self-hosted alternative) to understand how many people use our calculator and which features are most helpful. Analytics data is aggregated and does not personally identify you.
3. Local Storage
We store a few small preferences in your browser's local storage — such as whether you dismissed the install prompt, or your preferred zoom level. This data never leaves your device and we cannot access it.
4. Contact Form Data
If you fill out our contact form, we collect the name and email address you provide, along with your message. We use this only to reply to your inquiry. We do not add you to any mailing list without your explicit consent.
Cookies
We use minimal cookies. Specifically:
- Functional cookies: Used to remember your settings (like zoom level and dismissed prompts). These expire when you close your browser or within 30 days.
- Analytics cookies: If we use analytics, these cookies help count page views without identifying you personally.
We do not use advertising or tracking cookies. We do not show targeted ads based on your browsing history.
You can clear all cookies and local storage data for our site anytime through your browser settings (Settings → Privacy → Clear Browsing Data).
Third-Party Services
We may link to or embed third-party services. These have their own privacy policies:
- Google Fonts: We load fonts from Google Fonts. Google may log the font request. See Google's Privacy Policy.
- Embedded Calculator (Iframe Embeds): When third-party websites embed our calculator using an iframe, visitors on those sites interact directly with our service and are subject to this privacy policy.
We are not responsible for the privacy practices of external websites we link to.
Children's Privacy
Our calculator is commonly used by students of all ages, including children under 13. We take this seriously.
We do not knowingly collect personal information from children under the age of 13. We do not require account registration, so no child needs to provide their name, email, or any personal details to use the calculator.
If you are a parent or guardian and believe your child has submitted personal information to us (e.g., through our contact form), please contact us immediately and we will delete it promptly.
If you are a teacher using this tool with students under 13, please ensure you are following your school's data privacy policies and COPPA regulations.
Data Security
We take reasonable steps to protect the limited data we handle:
- Our website uses HTTPS encryption so your connection is always secure.
- Contact form submissions are transmitted securely.
- We do not store sensitive data like passwords or payment information (because we don't have accounts or payments).
Your Rights
Depending on where you live, you may have the following rights:
- Right to know: You can ask us what data we have about you.
- Right to delete: You can ask us to delete any personal data you submitted (e.g., contact form messages).
- Right to opt out: You can disable analytics cookies through your browser settings or by using an ad-blocker.
To exercise any of these rights, contact us here. We'll respond within 30 days.
Changes to This Policy
We may update this Privacy Policy from time to time. When we do, we update the "Last updated" date at the top of this page. We encourage you to review this page periodically.
Continued use of our website after changes are made means you accept the updated policy. If you have any concerns about changes, feel free to contact us.
Contact
Have a privacy question or concern? We're happy to help. Reach out to our team here and we'll get back to you within 24 hours on weekdays.