Privacy Policy

1. Using the app

The calculator processes the costs, prices, margins, discounts and tax values you enter on your device. Margin Guru does not receive those inputs or results. The app uses your device locale to format numbers and suggest a currency. It saves your currency and tax preferences on your device so they are available the next time you open the app.

The calculator does not require a Margin Guru account. The app does not include advertising, cross-app tracking or developer-operated usage analytics. If you copy a result, the app places it on your device clipboard at your request. Your device settings govern clipboard sharing and device backups.

Delete the app from your device to remove its locally stored preferences. If your device backed up or shared that data, manage those copies using your device or backup settings.

2. Website visits and support

When you visit the Margin Guru website, Vercel hosts and serves the site and processes technical request information such as your IP address, the page requested and request timing. We use this information to deliver the site, diagnose problems and protect it from abuse.

If you email support, we receive your email address, message and any information you choose to include, such as your device model or app version. If you use the website contact form when available, we receive your name, email address, selected topic and message. We use these details to respond, troubleshoot and keep a record of the request. Contacting support is optional. Please omit passwords, payment details and sensitive business information.

When the contact form is enabled, Cloudflare Turnstile processes technical signals from your browser and device to check for automated abuse. Resend delivers your form submission to our support inbox. Our email provider stores and delivers support correspondence. Apple handles App Store downloads under its own privacy policy.

3. How we protect and share information

We limit access to people who need it to operate the website or handle support. We require third parties with whom we share personal information from the app to provide protections at least equivalent to those described in this policy and required by Apple’s App Review Guidelines. Our service providers process information for the services described above. Providers may process information outside your country. Where applicable, we use the safeguards required for those transfers.

We do not sell personal information or use support details for advertising. We may disclose information when legally required or when necessary and permitted by law to protect the service or address abuse.

4. Retention and deletion

We keep support correspondence for as long as needed to respond and follow up, then delete it unless we need to keep it to meet a legal obligation, resolve a dispute or investigate abuse. Website, security and email delivery logs expire according to the retention settings of the providers that process them. Backups may keep copies until the provider’s backup cycle expires.

To request access, correction or deletion, or to withdraw consent where we rely on it, use the contact form. We may need to verify that the request is yours. We will act on valid requests and ask relevant providers to assist where applicable. Some records may be kept where required or permitted by law, and backup copies may remain until they expire. Where applicable, you may also lodge a complaint with your privacy regulator.

5. Changes and contact

We will post changes here with a new effective date. Where required, we will give additional notice or obtain consent before applying a material change. For privacy questions, use the contact form.