Terms of Service

By accessing or using Zeng Book(the “Service”), operated by Zeng Book (operator details to be confirmed before paid launch)(“we”, “us”), you agree to be bound by these Terms of Service (“Terms”). If you are using the Service on behalf of an organisation, you represent that you are authorised to bind that organisation.

If you do not agree to these Terms, do not use the Service.

You must be at least 18 years old and capable of entering into a binding contract under Singapore law. The Service is provided for business use, including by construction firms, renovation contractors, interior design firms, and similar professional users.

• You must provide accurate, current, and complete information during signup
• You are responsible for keeping your password confidential
• You are responsible for all activity under your account
• You must notify us promptly of any unauthorised access
• Accounts are personal and may not be shared between users — invite team members instead

Zeng Book provides a multi-tenant web application for managing:

• Client records and project tracking
• Quotations and invoices, with GST handling and document templates
• Document upload and storage
• Team members and workspace settings

Functionality, storage limits, and team-size limits depend on your subscription plan.

• Free plan: provided at no cost, with usage limits described on our pricing page
• Paid plans: billed in Singapore Dollars (SGD), inclusive of 9% GST where applicable
• Payments are processed via Stripe; you must also accept Stripe's terms of service
• Subscriptions auto-renew until cancelled
• You may cancel at any time via the billing portal; cancellation takes effect at the end of the current billing period
• We do not offer refunds for partial periods unless required by law
• We may change pricing with at least 30 days' notice; changes apply to subsequent billing cycles only

• You retain all ownership of data, files, and content you upload to the Service (“Customer Content”)
• You grant us a worldwide, royalty-free, non-exclusive licence to host, store, transmit, display, and process Customer Content solely to provide and improve the Service
• You represent that you have all rights necessary to upload Customer Content, including consent from individuals (e.g. clients, employees, sub-contractors) whose personal data is included
• You are responsible for your own privacy notice to those individuals
• You may export your data at any time using in-product tools
• Within 30 days of a written deletion request from an organisation admin, we will delete Customer Content from active systems (backups expire within 30 days thereafter)

You will not, and will not permit anyone to:

• Use the Service for unlawful purposes
• Upload malware, illegal content, or infringing content
• Reverse-engineer, decompile, or attempt to derive source code
• Probe, scan, or test the vulnerability of the Service without prior written consent
• Resell, rent, or sublicense the Service
• Use the Service to develop a directly competing product
• Impersonate any person or misrepresent your affiliation
• Send unsolicited or unlawful communications via Service-generated emails (including non-compliance with the Singapore Spam Control Act)
• Exceed reasonable rate limits or volume caps for your plan

We may suspend or terminate accounts that breach this section.

We own all rights in the Service, including the application, branding, design, and source code. Nothing in these Terms transfers IP rights to you, except a limited, non-exclusive, non-transferable right to use the Service while your subscription is active.

If you store data about your own clients, sub-contractors, or other third parties:

• You are the data controller; we are a data intermediary under PDPA
• You agree to comply with PDPA and other applicable data-protection laws
• You will obtain valid consents and provide your own privacy notices
• You will indemnify us from claims arising from your handling of such data (subject to Section 13)

• We aim for high availability but do not guarantee uninterrupted access
• Free plans carry no service-level agreement
• Paid plans target 99% monthly uptime, measured excluding scheduled maintenance and force-majeure events
• We may change, suspend, or discontinue features with reasonable notice
• We will perform maintenance outside Singapore business hours where practical

• You may terminate at any time by deleting your account or cancelling your subscription
• We may suspend or terminate your account on 30 days' notice for any reason, or immediately for breach of these Terms, non-payment, or to comply with law
• On termination: your right to use the Service ends; you remain liable for any unpaid fees; we will provide 30 days for data export before deletion

The Service is provided “as is” and “as available”, without warranties of any kind, whether express, implied, or statutory, including merchantability, fitness for a particular purpose, accuracy, and non-infringement, to the maximum extent permitted by Singapore law.

We do not warrant that:

• The Service will be uninterrupted, secure, or error-free
• All defects will be corrected
• Documents generated by the Service will satisfy specific regulatory requirements without your review
• The Service constitutes legal, tax, accounting, or construction-compliance advice

You are responsible for verifying that quotations, invoices, and other documents produced via the Service meet IRAS, BCA, MOM, CPF, and other applicable Singapore requirements before issue or submission.

To the maximum extent permitted by law:

• Our total aggregate liability for any claim arising out of or relating to the Service or these Terms is limited to the greater of (a) S$100, or (b) the fees you paid us in the 12 months before the claim arose
• We are not liable for indirect, incidental, special, consequential, exemplary, or punitive damages, or for lost profits, lost revenue, lost data, or business interruption

These limits apply even if a remedy fails of its essential purpose. Some limitations may not apply where prohibited by law.

You will defend, indemnify, and hold us harmless from claims, losses, and expenses (including reasonable legal fees) arising out of:

• Your Customer Content (including IP and privacy claims)
• Your breach of these Terms
• Your violation of applicable law
• Your handling of personal data of your own clients or third parties

We will defend, indemnify, and hold you harmless from third-party IP-infringement claims targeting our software (excluding your modifications, combinations with other tools, or use outside these Terms), subject to the liability cap in Section 13.

Each party will protect the other's confidential information using at least the same care it uses for its own (and not less than reasonable care). Customer Content is your confidential information.

These Terms are governed by the laws of Singapore. Disputes will be resolved by the Singapore International Arbitration Centre (SIAC) under its rules in force at the time, with the seat of arbitration in Singapore. Either party may seek urgent injunctive relief in the courts of Singapore.

We may update these Terms. Material changes will be notified at least 14 days in advance via email or in-product notice. Continued use after the effective date constitutes acceptance.

• Severability: if any provision is unenforceable, the rest remain in effect
• Waiver: no waiver of any term is effective unless in writing
• Entire agreement: these Terms (with the Privacy Policy) form the entire agreement between you and us regarding the Service
• Assignment: you may not assign these Terms without our written consent; we may assign on notice
• Force majeure: neither party is liable for delays caused by events beyond its reasonable control
• No agency: nothing in these Terms creates a partnership, joint venture, or employment relationship

Zeng Book (operator details to be confirmed before paid launch)
Email: [email protected]
Address: Registered Singapore address to be confirmed before paid launch