ShelfMark™
Terms of Service

Last Updated: November 8, 2026
Effective Date: February 21, 2026

1. Agreement to Terms

By accessing or using ShelfMark: Book Catalog (“ShelfMark,” the “App” or “Service”), you agree to be bound by these Terms of Service (“Terms”). If you do not agree, do not use the App.

ShelfMark is operated by Son of a Good Man LLC (“Company,” “we,” “our,” or “us”).

If you downloaded ShelfMark from Apple’s App Store, Apple’s Licensed Application End User License Agreement also applies. Where it and these Terms differ about your license to use the App, Apple’s agreement governs.

1.1 Definitions

  • “User,” “you” — any person or entity using the App
  • “Content” — text, images, data, or materials you submit
  • “Account” — your registered ShelfMark account
  • “Subscription” — any paid tier of the Service

1.2 Eligibility

You may use ShelfMark only if:

  • You are at least 13 years old
  • If under 18, you have parental or guardian consent
  • You provide accurate registration information
  • You maintain only one account per person

2. Account Registration and Security

2.1 Account Creation

To use ShelfMark you need an account. New accounts are created with Sign in with Apple or Google; accounts made earlier with an email address and password can keep signing in that way. You must be at least 13 years old.

You are responsible for keeping your sign-in details confidential.

2.2 Account Responsibility

You are responsible for all activity under your account. You agree to:

  • Notify us immediately of unauthorized access
  • Not share your login credentials

We are not liable for losses caused by unauthorized use of your account.

2.3 Account Suspension or Termination

We may suspend or terminate accounts that:

  • Violate these Terms
  • Engage in fraud or abuse
  • Fail to pay applicable subscription fees
  • Harm the Service or other users

3. Plans, Purchases and Billing

3.1 Plans

Free

  • Up to 5,000 books
  • 3 AI credits a month, refilled on the 1st
  • Your first 10 shelf photos don’t use credits

Premium (a monthly or yearly subscription: $3.99 a month or $29.99 a year)

  • Unlimited books
  • 100 AI credits a month
  • Printable spine labels and the Premium pieces in each season’s shelf decorations

Prices are in USD in the United States and may differ by country and store. We may change plan features from time to time.

3.2 Payment and Renewal

  • Purchases are charged to your Apple ID or Google Play account and processed by Apple or Google; RevenueCat manages subscription status for us.
  • Monthly and yearly plans renew automatically at the price shown unless cancelled at least 24 hours before the end of the current period. You can manage or cancel a subscription in your App Store or Google Play account settings, and a cancellation takes effect at the end of the current period.
  • There is no lifetime plan.
  • We may change subscription prices with at least 30 days’ notice; a change applies from your next renewal.

3.3 AI Credits

  • AI credits pay for ShelfMark’s smart features, such as reading the books in a shelf photo, reading picks and filling in book details. Each AI use costs 1 credit, except a fresh set of Discover picks, which costs 2; repeating your own request (the same search, or filling in the same book again) is free.
  • Monthly credits reset on the 1st of each month and unused ones do not carry over.
  • AI credit packs are one-time purchases of 25 or 60 credits for any plan. Purchased credits do not expire, are used only after your monthly credits run out, belong to your ShelfMark account, and cannot be transferred or exchanged for cash. They end when the account is deleted.

3.4 Free Trial

  • The yearly plan currently includes a 7-day free trial, available to first-time subscribers only
  • You will be charged when the trial ends unless you cancel before it ends

3.5 Refunds

Purchases are made through Apple or Google, and refunds are handled by them under their policies: request one through reportaproblem.apple.com or Google Play. If a credit pack is refunded, its unused credits are removed from your account. Where the law gives you a right to a refund, nothing here limits it.

4. Acceptable Use Policy

4.1 Permitted Uses

You may use ShelfMark to:

  • Catalog personal book collections
  • Track reading progress
  • Receive recommendations
  • Share libraries
  • Coordinate personal lending

4.2 Prohibited Activities

You agree NOT to:

  • Upload full copyrighted books or PDFs without permission
  • Use the App commercially without authorization
  • Scrape or data-mine the Service
  • Reverse engineer or hack the App
  • Upload malware or harmful code
  • Impersonate others
  • Harass or abuse users
  • Violate laws or regulations
  • Share illegal or explicit content
  • Sell or transfer your account
  • Circumvent subscription limits

4.3 Content Standards

User content must:

  • Comply with copyright law
  • Avoid hate speech or harassment
  • Avoid explicit adult content
  • Avoid spam or advertising
  • Remain relevant to books and reading

5. Intellectual Property

5.1 Our Property

ShelfMark, including its software, design, and branding, is owned by Son of a Good Man LLC and protected by intellectual property laws.

You may not copy, modify, distribute, or create derivative works without permission.

5.2 Your Content

You retain ownership of your content. However, you grant us a worldwide, non-exclusive, royalty-free license to use, store, and display your content to operate and improve the Service.

You represent that you have the rights to any content you upload.

5.3 Book Metadata

Book metadata (titles, authors, ISBNs, covers):

  • May be sourced from third-party databases
  • Is used for identification purposes
  • Is not claimed as our property

5.4 AI-Generated Outputs

AI features are provided “as is.”

You acknowledge that:

  • AI results may be inaccurate
  • Recommendations are suggestions only
  • We do not guarantee AI accuracy

5.5 Copyright Complaints (DMCA)

We respect intellectual property rights and respond to notices of alleged copyright infringement under the Digital Millennium Copyright Act (“DMCA”).

If you believe something in ShelfMark infringes your copyright, send a notice to our designated copyright agent, registered with the U.S. Copyright Office:

Copyright Agent, Son of a Good Man LLC
435 E. Market St., Long Beach, CA 90805, United States
Email: support@sonofagoodman.com (subject line: “Copyright Notice”)

Your notice must include:

  • Your physical or electronic signature, as the copyright owner or a person authorized to act for the owner
  • A description of the copyrighted work you say is infringed
  • A description of the material you say is infringing, and where it is in ShelfMark, in enough detail for us to find it (for example, the book, list, image or screen)
  • Your name, postal address, telephone number and email address
  • A statement that you believe in good faith that the use is not authorized by the copyright owner, its agent or the law
  • A statement that the information in your notice is accurate and, under penalty of perjury, that you are the owner or are authorized to act for the owner

We may remove or disable access to material that is the subject of a valid notice, and we may share your notice with the person who provided the material. Knowingly misrepresenting that material is infringing can make you liable for damages under the DMCA.

We will, in appropriate circumstances, end the accounts of people who repeatedly infringe others’ rights.

6. Privacy

Your use of ShelfMark is governed by our Privacy Policy. By using the App, you consent to the collection and processing of information as described there.

7. Third-Party Services

ShelfMark relies on third-party providers including Supabase (infrastructure and storage), OpenAI (AI features), RevenueCat (subscriptions), Apple and Google (payments, sign-in and speech recognition), Sentry (crash reports and performance timings), PostHog (anonymous usage analytics), Resend (email), public book databases (Open Library, ISBNdb, Hardcover, Wikipedia and Project Gutenberg), and Expo (app updates and, with Apple, push notifications). See the ShelfMark Privacy Policy for what each receives.

We are not responsible for third-party service interruptions or policies.

8. Disclaimers

THE SERVICE IS PROVIDED “AS IS” AND “AS AVAILABLE.”

We disclaim all warranties to the fullest extent permitted by law, including:

  • merchantability
  • fitness for a particular purpose
  • accuracy or reliability
  • uninterrupted operation

9. Limitation of Liability

To the maximum extent permitted by law:

  • We are not liable for indirect or consequential damages
  • Our total liability shall not exceed the amount you paid us in the prior 12 months

Some jurisdictions may limit these exclusions.

10. Indemnification

You agree to indemnify and hold harmless Son of a Good Man LLC from claims arising out of:

  • your use of the Service
  • your content
  • your violation of these Terms
  • your violation of third-party rights

11. Book Lending Feature

ShelfMark provides coordination tools only.

We are not responsible for:

  • lost or damaged books
  • user disputes
  • physical transfers

Users are solely responsible for lending arrangements.

12. Community Standards and Moderation

ShelfMark has zero tolerance for objectionable content and abusive users. You may not post or send anything that is hateful, harassing, threatening, sexually explicit, violent, defamatory, or otherwise objectionable, including in notes, messages, borrow requests, usernames, profile photos, shelf photos and photo-frame decorations.

  • Filtering: text and photos you share with other people are checked automatically before they are posted, and content that appears to break these standards is not posted.
  • Reporting and blocking: you can report content or a person, and block anyone, from within the app.
  • Our response: we review every report and act on it within 24 hours, by removing the content and, where warranted, suspending or permanently removing the account that posted it.
  • We may report illegal activity to the authorities.

13. Termination

You may delete your account at any time.

We may suspend or terminate accounts for violations or legal requirements.

Certain provisions (IP, liability, indemnity) survive termination.

14. Dispute Resolution and Arbitration

14.1 Informal Resolution

Before filing a claim, contact us at support@sonofagoodman.com. We will attempt resolution within 60 days.

14.2 Binding Arbitration

If unresolved, disputes will be resolved by binding arbitration through the American Arbitration Association (AAA).

Arbitration will occur in California, United States, unless conducted remotely.

14.3 Class Action Waiver

You agree to bring claims only in your individual capacity, not as part of any class action.

14.4 Opt-Out

You may opt out of arbitration within 30 days of first use by emailing:

support@sonofagoodman.com

14.5 Governing Law

These Terms are governed by the laws of the State of California, without regard to conflict of law principles.

15. Changes to Terms

We may modify these Terms from time to time. Continued use of ShelfMark after updates constitutes acceptance.

16. General Provisions

  • Entire Agreement
  • Severability
  • No Waiver
  • Assignment
  • Force Majeure
  • Export Compliance

17. Contact Information

Son of a Good Man LLC
435 E. Market St.
Long Beach, CA 90805
United States
Support: support@sonofagoodman.com

18. Acknowledgment

By using ShelfMark, you acknowledge that you have read, understood, and agree to these Terms, including the arbitration and class action waiver.

Version: 1.2