WHETSTONE
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Privacy Policy

Effective date: [insert launch date] · Last updated: [insert date]

1. Who We Are

Whetstone is a Bible study application for men, provided by DiligenceIQ ("we," "us," "our"). This policy explains what information we collect, how we use it, and the choices you have.

2. Information We Collect

Account information: When you create an account, we collect your email address and a securely hashed password (we never store your password in readable form). Account creation is optional — the app can be used in guest mode without an account, with data stored only on your device.

Content you create: Journal entries, bookmarks, and reading progress you generate while using the app. Journal entries may contain personal, reflective, and sensitive content by their nature. This content is yours — we do not read, review, or use it to train any AI model.

Usage data: General app usage patterns (which screens are used, general engagement metrics) collected through Firebase/Google Analytics, to help us understand how the app is used and improve it. This is aggregated and not tied to the content of your journal entries.

Crash and error data: Technical diagnostic information collected through Sentry when the app encounters an error, to help us fix bugs. This may include device type, OS version, and the state of the app at the time of the error — it does not include your journal content.

3. How We Use Your Information

  • To provide the core functionality of the app (Bible reading, verse explanations, journaling, reading plans).
  • To sync your data across devices if you create an account.
  • To generate the "Explain This" plain-English and historical-context explanations you request, which involves sending the relevant Bible passage (not your personal journal content) to Anthropic's Claude API for processing.
  • To improve the app based on aggregated, anonymized usage patterns.
  • To communicate with you about your account (e.g., password resets) if you have one.

We do not sell your data. We do not use your journal content to train AI models. We do not share your personal content with advertisers.

4. Third-Party Service Providers

We use the following services to operate Whetstone. Each processes limited data as described:

  • Supabase — hosts our database and handles account authentication. Stores your account information and app content (journal entries, bookmarks, progress) securely.
  • Anthropic (Claude API) — processes Bible passage text to generate plain-English explanations. Anthropic does not receive your journal content, account information, or personal identity as part of this process.
  • Voyage AI — processes Bible and commentary text to power search/retrieval within the app. Does not receive your personal content.
  • Sentry — receives technical crash/error diagnostics to help us fix bugs.
  • Firebase/Google Analytics — receives aggregated, anonymized usage data.
  • Stripe — if you choose to make a voluntary donation, Stripe processes your payment directly. We do not receive or store your card information — Stripe handles this under its own privacy policy and PCI-compliant systems.

5. Your Choices and Rights

  • Guest mode: You can use Whetstone without creating an account. Your data stays on your device only.
  • Account deletion: You can request deletion of your account and all associated data at any time by contacting support@whetstoneapp.net. We will delete your journal entries, bookmarks, progress, and account information within 30 days of a verified request.
  • Data export: You can request a copy of your journal entries and app data by contacting support@whetstoneapp.net.

6. Data Security

We use industry-standard security practices, including encrypted connections and Supabase's row-level security to ensure your data is only accessible to you. No system is perfectly secure, and we cannot guarantee absolute security, but we take reasonable steps to protect your information.

7. Children's Privacy

Whetstone is rated 12+ and is not directed at children under 13. We do not knowingly collect information from children under 13. If we learn we have inadvertently collected such information, we will delete it.

8. Changes to This Policy

We may update this policy from time to time. We will notify users of material changes through the app or via email if you have an account.

9. Contact

Questions about this policy or your data can be directed to: support@whetstoneapp.net

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© 2026 DiligenceIQ. Whetstone is an independent Bible study tool and is not affiliated with Dallas Theological Seminary.