Version 1.0 — Last updated: February 2026
These Terms of Service (“Terms”) constitute a legally binding agreement between you (“you”, “your”) and Stack Zero Limited, a company registered in England and Wales (company number: 09373967), with its registered address at Bridge Farm, Holt Lane, Ashby Magna, LE17 5NJ, trading as “Savvi” (“we”, “us”, “our”).
By creating an account or using the Savvi platform at savvibills.com, you agree to be bound by these Terms and our Privacy Policy. You must be at least 18 years of age to use Savvi. If you do not agree to these Terms, do not create an account or use our service.
Savvi is a document management and organisation platform. You can upload documents (bills, contracts, certificates, manuals), and our AI-powered system classifies, extracts structured data from, and organises them into profiles, supplier accounts, and contracts.
The service is provided on an “as-is” basis. While we strive for accuracy, we do not guarantee the accuracy of AI-extracted data. You should always verify extracted information.
We reserve the right to modify, suspend, or discontinue any part of the service with reasonable notice. We do not offer a guaranteed service level agreement (SLA).
You must provide accurate and complete information when creating your account. Accounts are personal and non-transferable. You are responsible for maintaining the confidentiality of your password and for all activity under your account.
You must notify us immediately at privacy@savvibills.com if you become aware of any unauthorised use of your account.
If you invite other members to your account, you (as the account owner) are responsible for their activity within your account. Account types include Home, Landlord, and Business.
You retain full ownership of all documents and data you upload to Savvi (“User Content”). By uploading content, you grant us a non-exclusive, royalty-free licence to process, store, analyse, and display your content solely for the purpose of providing the Savvi service to you. This licence terminates when you delete your content or your account.
You warrant that you have the right to upload all content you submit to Savvi.
You must not upload:
Your documents are processed using third-party artificial intelligence providers, currently OpenAI and Google Gemini. Document text and images are sent to these providers for classification and data extraction.
AI-generated outputs are provided on an “as-is” basis. You are responsible for reviewing and verifying all AI-extracted data. We are not liable for any inaccuracies, errors, or omissions in AI extraction results.
You can review and correct AI outputs through our inbox review system. For further details on how your data is shared with AI providers, see our Privacy Policy.
Savvi offers optional integrations with third-party services including Xero, QuickBooks Online, and Google Drive. When you connect an integration, you explicitly authorise us to share relevant data with that service.
We are not responsible for the availability, accuracy, or data handling practices of third-party services. You can disconnect any integration at any time through your account settings. When you disconnect, we delete the associated access tokens.
Savvi offers a free tier with limited features and paid subscription plans. Paid plans are available on a monthly or annual basis, processed by our payment partner Stripe.
We may change our prices with at least 30 days' written notice. If you are on a free trial for premium features, your trial will convert to a paid subscription at the end of the trial period unless you cancel beforehand.
You may cancel your subscription at any time. On cancellation, you retain access to paid features until the end of your current billing period. We do not offer refunds for partial billing periods.
If a payment fails, we may downgrade or suspend your account after a reasonable grace period.
You agree not to:
We reserve the right to suspend or terminate accounts that violate these rules.
The Savvi brand, logos, website design, application code, and AI models are the intellectual property of Stack Zero Limited. All rights are reserved.
Your User Content remains your property (see Section 4).
If you provide us with feedback, suggestions, or feature requests, we may use these without any obligation to you.
To the maximum extent permitted by law:
Nothing in these Terms excludes or limits our liability for fraud, death or personal injury caused by our negligence, or any other liability that cannot be excluded or limited under applicable law.
You may delete your account at any time through your account settings. When you delete your account, your data is soft-deleted and recoverable for 30 days. After 30 days, your data is permanently deleted. Contact support within the 30-day window if you wish to restore your account.
We may suspend or terminate your account for breach of these Terms, with notice where reasonably practicable.
On termination:
The following sections survive termination: Limitation of Liability, Intellectual Property, Dispute Resolution, and General.
These Terms are governed by the laws of England and Wales. The courts of England and Wales have exclusive jurisdiction over any disputes arising from or relating to these Terms or your use of Savvi.
Before commencing legal proceedings, you agree to attempt to resolve any dispute informally by contacting us at privacy@savvibills.com. We will endeavour to resolve the matter within 30 days of receiving your notice.
These Terms, together with our Privacy Policy, constitute the entire agreement between you and Stack Zero Limited regarding your use of Savvi.
If any provision of these Terms is found to be unenforceable, the remaining provisions shall continue in full force and effect. Our failure to enforce any right or provision of these Terms shall not constitute a waiver of that right or provision.
We may assign our rights and obligations under these Terms to another organisation. You may not assign your rights or obligations without our prior written consent.
We shall not be liable for any delay or failure to perform our obligations where such delay or failure results from circumstances beyond our reasonable control (force majeure).
We will send notices to the email address registered to your account. You are responsible for keeping your email address up to date.
We may update these Terms from time to time. We will provide reasonable notice of any changes by email and/or through the Savvi platform.
Your continued use of Savvi after notification constitutes acceptance of the updated Terms. For material changes, we will provide at least 30 days' notice before the changes take effect.
Stack Zero Limited, trading as Savvi.
Company number: 09373967.
Registered address: Bridge Farm, Holt Lane, Ashby Magna, LE17 5NJ.
Privacy and data protection enquiries: privacy@savvibills.com.
General support: support@savvibills.com.