Last updated: 19 July 2026 · Applies to the SoleTax AI mobile application (com.smartbusinesslabs.soletaxai)
This Privacy Policy explains how Vladislavs Saperins, trading as Smart Business Labs ("we", "us"), based in England, United Kingdom, handles your information when you use the SoleTax AI mobile application ("the App"). We are the data controller for the App under the UK General Data Protection Regulation (UK GDPR) and the Data Protection Act 2018.
| Data | Where it lives | Purpose |
|---|---|---|
| Income and expense entries, categories, tax estimates | Locally on your device only (app storage). Never uploaded to our servers. | Expense tracking and tax calculations inside the App |
| Onboarding answers and app preferences | Locally on your device only | Personalising the App experience |
| Messages you send to the AI assistant | Transmitted over encrypted connection (HTTPS) to our server and to our AI provider for processing; not stored as a personal profile and not linked to your name or account | Generating AI answers to your tax questions |
| Subscription status | Processed by Google Play; we receive a purchase token only | Unlocking paid features |
| Crash and basic diagnostic data | Google Play services | Fixing bugs and keeping the App stable |
We do not collect your name, address, National Insurance number, HMRC login, bank credentials or payment card details. Payments are handled entirely by Google Play — we never see your payment information.
When you ask the AI assistant a question, your message is sent through our infrastructure (Cloudflare) to Anthropic's Claude API for processing. Under Anthropic's commercial API terms, data submitted via the API is not used to train AI models. We recommend not including personal identifiers (such as your full name, NI number or UTR) in chat messages — the App works without them.
Personal identifiers (such as National Insurance Numbers) are automatically redacted from chat messages before any AI processing.
We share data only with the service providers needed to run the App:
Where data is transferred outside the UK, transfers are protected by the UK International Data Transfer Addendum, the UK Extension to the EU–US Data Privacy Framework, or equivalent safeguards. We never sell personal data and never share it for advertising.
The App does not use user accounts, so there is no account to delete. To remove all your data: delete your records inside the App, or simply uninstall the App — this permanently removes all locally stored information. To ask us about any technical logs, contact us at the address below.
Under UK GDPR you have the right to access, correct, delete or restrict processing of your personal data, to object to processing, and to data portability. To exercise any right, email us — we respond within one month. You also have the right to complain to the Information Commissioner's Office (ICO): ico.org.uk.
The App is intended for UK sole traders and is not directed at anyone under 18. We do not knowingly process children's data.
All network traffic is encrypted with TLS. Your financial records never leave your device. Our server-side components hold no database of user financial data.
We will post any changes on this page and update the date above. Material changes will be highlighted inside the App.
Vladislavs Saperins trading as Smart Business Labs, England, United Kingdom
Email: support@smartbusinesslabs.co.uk
ICO registration number: ZC179963