1Overview
RentalMath integrates with the following third-party services. This Disclosure names each service, its purpose, what data it receives, and links to its privacy policy. Services marked "Paid/Premium only" are not used for free-tier users who do not create accounts.
2Stripe (Paid / Premium only)
| Purpose | Payment processing for Paid and Premium subscriptions. |
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| Data Received | Full payment card details (never seen by us), billing name, billing address, email, and subscription metadata. Stripe stores all card data under PCI-DSS Level 1 certification. We receive only non-sensitive billing metadata (subscription status, last four digits, billing dates). |
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| Policies | Stripe Terms of Service · Stripe Privacy Policy |
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3Google Firebase Authentication (Paid / Premium only)
| Purpose | User account creation, sign-in, and authentication token management. |
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| Data Received | Email address, hashed password (never plaintext), authentication tokens, and sign-in event metadata. |
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| Policies | Firebase Terms of Service · Google Privacy Policy |
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4Google Cloud Firestore (Paid / Premium only)
| Purpose | Cloud database for storing and syncing deal records across devices. |
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| Data Received | All deal data you save: property addresses, financial inputs, calculated values, notes, and server timestamps. |
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| Policies | Firebase Terms of Service · Google Privacy Policy |
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5Google Sign-In (Paid / Premium only)
| Purpose | Optional social sign-in using an existing Google account. |
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| Data Received | Google provides your name and email address to Firebase Authentication. We do not receive your Google password. |
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| Policies | Google Identity · Google Privacy Policy |
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6Apple Sign-In (Paid / Premium only)
| Purpose | Optional social sign-in using an Apple ID. Apple's "Hide My Email" feature may provide a relay address. |
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| Data Received | Name (first sign-in only) and email address (real or relay). We do not receive your Apple ID password. |
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| Policies | Apple Sign In · Apple Privacy Policy |
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7URL Shortening Service (All tiers, optional)
| Purpose | Optional generation of shortened versions of shareable deal links. |
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| Data Received | The full shareable URL (encoding your deal data) is sent to the shortening service, which may log it and associate it with an IP address. |
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| Note | Do not use URL shortening for deals containing sensitive information. See the Sharing Disclosure. |
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8jsDelivr CDN (All tiers)
| Purpose | Delivery of Bootstrap CSS/JS and Chart.js via content delivery network. |
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| Data Received | Your browser's IP address and request metadata when downloading these files. |
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| Policy | jsDelivr Privacy Policy |
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9Google Fonts (All tiers)
| Purpose | Delivery of Sora and IBM Plex Mono typefaces. |
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| Data Received | IP address and browser metadata when fonts are requested from fonts.googleapis.com and fonts.gstatic.com. |
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| Policy | Google Privacy Policy |
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10AI Inference Provider (Planned — not yet active)
| Status | AI-powered analysis features are planned for a future release. No AI inference provider is currently active and no deal data is transmitted to any AI service at this time. |
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| Questions | Contact admin@housatonicholdings.com with any questions. |
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11Changes to This List
We may add, remove, or replace third-party services. Material changes will be reflected in an updated Disclosure. We encourage periodic review.
