YELFiN Mobile App Privacy Policy
Effective date: 2 October 2026
YELFiN Ltd (“YELFiN”, “we”, “us” or “our”) provides the YELFiN mobile application (“the App”).
For the purposes of UK data protection law, YELFiN Ltd is the controller of personal data processed in connection with the App where we determine why and how that information is processed. YELFiN Ltd is registered in England and Wales under company number 16207433. Our registered office is:
20 Wenlock Road London England N1 7GU
Privacy enquiries may be sent to help@yelfin.com.
This policy explains how information may be processed when you:
Most standard educational content and preferences are designed to operate locally on your device. Ask YELFiN AI, App Store subscriptions and communications with YELFiN involve external services and must be connected to the internet.
YELFiN does not require users to create a YELFiN account or personal profile.
Based on the App’s current design, its standard educational features are not intended to collect names, email addresses, telephone numbers, contact lists, precise location, photographs, private messages or files.
The App may nevertheless interact with your device, operating system, the Apple App Store and technical infrastructure in ways that generate limited technical information. Depending on the service and device configuration, this could include an IP address, device or operating-system information, diagnostic information, subscription status or transaction identifiers.
YELFiN does not intentionally use the App for behavioural advertising, the sale of personal data or cross-app advertising profiles.
The App uses local storage, including AsyncStorage, to save certain App preferences or settings on your device. This locally stored information is intended to remain on the device and is not ordinarily available to YELFiN. It will normally remain until it is removed through the App, cleared through the device’s settings or deleted when the App is removed. Device backups or operating-system services may affect how and when locally stored information is deleted.
Users are responsible for securing their devices and any device or cloud backups they choose to use.
Ask YELFiN AI is an optional feature. It is not required in order to use the App’s other educational content.
When a user submits a question, the question is transmitted through the App’s technical infrastructure, which may include services provided by Rork and its infrastructure providers, to Anthropic’s Claude technology so that a response can be generated and returned.
Information processed in connection with Ask YELFiN AI may include:
A question may become personal data if the user includes information about themselves or another identifiable person. Users must therefore anonymise questions and must not submit:
YELFiN’s current operator interface is not designed to provide YELFiN with a routine conversation history or routine access to individual questions and responses. However, Rork, Anthropic and relevant infrastructure providers may process or retain information in accordance with the technical configuration, contractual terms, security requirements and legal obligations that apply to their services.
YELFiN cannot guarantee that a user will follow the instruction not to provide personal or sensitive information. If such information is submitted, it may be processed by the providers involved in delivering the AI response.
We facilitate the processing of an AI question in order to:
Where processing is objectively necessary to provide a feature requested by the user, we rely on Article 6(1)(b) UK GDPR: processing necessary to perform a contract or take steps at the user’s request. Where appropriate, we may rely on Article 6(1)(f) UK GDPR: our legitimate interests in providing, securing and improving an optional digital-safety information service. When relying on legitimate interests, we consider the necessity and proportionality of the processing and the possible effect on users.
We do not invite or require users to provide special-category data through Ask YELFiN AI. Users must not submit such information.
AI-generated responses can be inaccurate, incomplete, misleading or out of date. Users should independently check important information before acting on it.
Ask YELFiN AI provides general educational information only. It does not provide legal, medical, financial, investigative, safeguarding or emergency advice and does not replace the police, emergency services or a suitably qualified professional.
Do not rely on Ask YELFiN AI where someone may be in immediate danger. Contact the appropriate emergency service or safeguarding authority.
Subscriptions and in-app purchases are processed by Apple through the Apple App Store.
YELFiN does not receive your complete payment-card details. Apple may provide YELFiN or the App with limited transaction information, such as a transaction identifier, product purchased, subscription status, renewal status or entitlement information. This information may be required to confirm access to paid features, provide support, prevent fraud and maintain transaction records.
Apple processes payment and account information under its own terms and privacy policy.
Our lawful bases for subscription-related processing may include:
Subscription and transaction records may be retained for as long as reasonably necessary to provide the subscription, resolve disputes and meet applicable legal, tax and accounting requirements.
If you contact YELFiN by email or another communication channel, we will receive the information you choose to provide, such as your email address, name, message and any attachments.
We use this information to respond to your enquiry, provide support, investigate problems and maintain appropriate business records.
Please do not send passwords, highly sensitive personal data, information identifying a child or unnecessary confidential material when requesting support.
Support correspondence is retained only for as long as reasonably necessary for the enquiry, related record-keeping, dispute resolution and legal obligations.
Information may be processed by organisations that help operate the relevant feature. Depending on how the App is used, these may include:
The precise role of each provider may depend on the applicable contract and technical configuration. Some providers may act as processors on YELFiN’s behalf, while others may process information for their own purposes under their own privacy terms.
YELFiN does not sell questions, responses or support information and does not use Ask YELFiN AI conversations for advertising or user profiling.
YELFiN does not intentionally maintain a user-visible or operator-visible history of Ask YELFiN AI conversations. Questions, responses and related technical information may nevertheless be retained temporarily by Rork, Anthropic or their infrastructure providers. The applicable period depends on the service configuration, contractual arrangements, security requirements, misuse investigations and legal obligations. Providers may retain information for longer where necessary to investigate suspected misuse, enforce their policies, protect their systems or comply with law. Information that has been aggregated or effectively anonymised may also be retained for longer where permitted by law. YELFiN will periodically review its provider arrangements and update this policy when confirmed retention information or material changes become available.
Rork, Anthropic, Apple or their infrastructure providers may process information outside the United Kingdom. Where YELFiN makes a restricted transfer of personal data, we will use an appropriate transfer mechanism where required by law. Depending on the recipient and destination, this may include UK adequacy regulations, the UK International Data Transfer Agreement, the UK Addendum to approved contractual clauses or another lawful safeguard.
International processing may be subject to the laws of the country in which the provider or its infrastructure is located. Further information about applicable safeguards may be requested at help@yelfin.com.
YELFiN provides digital-safety educational information that may be relevant to families. The App is not designed to invite children to provide personal information through Ask YELFiN AI.
Children should use the App with the involvement of a parent, guardian or other responsible adult where appropriate. A user must never identify a child or submit a child’s private, safeguarding, health or contact information through Ask YELFiN AI.
If you believe that a child’s personal information has been submitted through the App, contact help@yelfin.com. We will consider what assistance or action is reasonably available, recognising that YELFiN may not have direct access to the relevant AI request.
YELFiN takes proportionate technical and organisational measures intended to protect information processed in connection with the App.
No application, device, transmission method or storage system can be guaranteed to be completely secure. Users should keep their device and operating system updated, use an appropriate screen lock, protect their App Store account and avoid submitting confidential or identifying information through Ask YELFiN AI.
Depending on the circumstances, UK data-protection law may give you rights to:
These rights are not absolute and may not apply in every situation.
YELFiN may hold little or no information that enables us to identify a particular App user. We may therefore be unable to locate information connected with an AI request, particularly where the user did not create an account and YELFiN does not receive a conversation history. We will explain this if it affects our ability to respond to a request.
To exercise a right, contact help@yelfin.com.
You may also complain to the Information Commissioner’s Office (“ICO”). Information about making a complaint is available at ico.org.uk. We encourage you to contact us first so that we have an opportunity to address your concern.
We may update this policy where the App, its providers, legal requirements or our data-handling practices change.
The current version will be published on the YELFiN website with its effective date. Where a change materially affects how information is processed, we will take reasonable steps to bring it to users’ attention.
For questions, concerns or data-protection requests, contact:
YELFiN Ltd20 Wenlock Road London England N1 7GU
Email: help@yelfin.com
This policy is governed by the laws applicable to YELFiN Ltd and does not limit any rights available to individuals under applicable data-protection law.
Copyright © 2026 YELFiN - All Rights Reserved.
Registered office address 20 Wenlock Road, London, England, N1 7GU · Company No. 16207433