Privacy Policy

Last updated 24 October 2026

Nusen helps you set your own app boundaries. The app uses Apple's Screen Time controls on your device. Account settings can be backed up so you can restore them on another device.

Who is responsible

SK-PD LTD (registration no. HE 485247), Gladstonos 16, 8046 Paphos, Cyprus, is the controller of the personal data described here. For privacy questions or requests, write to simon@skpd.studio.

Information Nusen handles

• On your device: your selected apps, app rules, onboarding answers, preferences and local Screen Time information. Apple app identities, selection tokens and measured time spent in apps stay on your phone.
• Account and saved content: your account identifier, email or identity information from your chosen sign-in provider, free-week and subscription dates, backed-up settings, notes, check-in answers, app names you type, and letters and postcards. Names you type are your own content; Nusen does not obtain them from Apple's app picker.
• Activity summaries: account-linked changes to your setup, times when you let Nusen or one app stop guarding, and counts and dates of openings Nusen allowed or Daily limits used up. Summaries may include your time zone, Window names and app names you typed. They support your calendar and personalised writing; they do not measure time spent in apps.
• Usage and reliability: setup progress, permission results, sign-in method and result, plan choices, time to complete setup, days Nusen is opened, shield-button actions, saved-answer and wait events, sharing, help and feedback interactions, review requests and observed errors or repairs. Before sign-in, a random session reference is used, without your email or a phone identifier, and linked to your account when you sign in. Where Apple supplies a crash report attributable to your account, Nusen records its occurrence, not the diagnostic contents. These event records exclude your words and Apple's selected-app identities.
• Purchases and sharing: Apple provides transaction identifiers, purchased plans, access dates, trials, renewals, cancellations and refunds so Nusen can manage access and understand subscriptions. Nusen does not collect payment card details. Share Reflect stores the relationship between the two accounts and invitation and access dates; it does not share either person's notes, letters, check-ins, calendars or app choices with the other person.
• Help and feedback: messages contain your text, optional category, app and iOS versions and plan, linked to your account. If Reply to me is on, your verified account email, including an Apple relay address, is included so we can reply. Turning it off omits the email from the stored message and support copy; the message remains linked to your account. Identifying information you type in the message remains part of its text. Older anonymous feedback stays unlinked. Support messages are not sent to OpenAI. Optional cancellation feedback contains your reason and any text you provide, linked to your account and plan.
• Notifications and preferences: notification delivery identifiers and your choices, optional email signups and consent dates, and which announcements, feedback asks, review requests and plan invitations were shown or answered. Invitation records include the qualifying count, plan and response. These records manage delivery, avoid repeated prompts and help improve Nusen.
• Install sources and technical requests: Apple provides aggregate installation and campaign reports. For Apple Ads, an attribution token is sent to Apple and the returned campaign identifiers and attribution result are stored with your account; the token is not retained. Hosting and sign-in providers receive technical request information such as IP addresses and security logs. Nusen does not use IDFA, fingerprinting, cross-app tracking or third-party analytics SDKs.

Personalised writing

To create and check personalised letters, postcards and questions, Nusen sends your notes, answers, names you supplied and the limited activity summaries above to OpenAI. It does not send your account email, Apple selection tokens or measured Screen Time data. Information you include in your own words may be included in this processing.

A note that unmistakably states an intention or wish to self-harm or die may be separately flagged for review by Simon, our designated reviewer, normally within three days. Such notes are excluded from personalised writing and check-ins. Feeling sad, tired, low or angry alone does not trigger this review. If the reviewer confirms a clear statement, they may send one fixed email pointing to support. Nothing is sent automatically, and there is no follow-up. This limited review may miss statements; Nusen is not an emergency or crisis monitoring service.

Why we use your data

We use account details, settings and content to provide the services you request: sign-in, backup, subscription access, personalised writing, sharing and support. Account details are needed for sign-in and account services. Support messages, cancellation feedback and marketing signups are optional.

We use limited usage, purchase and technical information for our legitimate interests in improving Nusen, understanding how it is used, and keeping the service secure and reliable. Optional marketing emails are based on your consent; you can withdraw it at any time.

Who receives your data

Authorised SK-PD staff may access account information and saved content where needed to operate Nusen, provide support or meet legal obligations.

• Supabase hosts account sign-in, backups, saved writing and related account records.
• Resend delivers sign-in, account-download and other service emails, and copies support messages to our support inbox. It receives the addresses and content needed for delivery. Sign-in emails do not use open or click tracking.
• OpenAI processes the content described under Personalised writing. API data is not used to train its models by default. Abuse-monitoring logs may retain submitted content for up to 30 days, subject to its policies and legal requirements.
• Apple provides Screen Time controls, purchases, Sign in with Apple, notifications and attribution services. Google receives sign-in information if you choose Google sign-in.
• Bunny.net hosts Nusen's public web pages and sign-in link pages.

We do not sell personal data or share app usage data with advertisers. Providers may process data outside the European Economic Area. Where required, we use applicable transfer safeguards; contact us for details or a copy of the relevant safeguards.

How long we keep it

• Account details, saved settings and writing remain while your account is active, unless you delete them sooner. Preferences that prevent repeated feedback and review prompts remain until account deletion.
• Activity summaries used for writing are kept for 90 days. Unlinked setup sessions are kept for 30 days. Account-linked usage events, cancellation answers and new support messages are kept for 180 days. Plan-invitation records are kept for 120 days.
• The flag and access to the note through the review list end 30 days after its first reading. Your original note stays in your account until you delete it. A minimal record that the one-time email was requested is kept until account deletion to prevent another email. The reviewer list is not used for writing, check-ins, scoring or reports. The fixed email is delivered through Resend and contains no quotation from your note.
• Temporary account-download files expire after 24 hours and are removed automatically.
• We may retain records where needed for legal obligations, security or disputes. Support email correspondence follows these retention needs. Purchase history may remain for reconciliation without your account or email attached. Non-identifying aggregate statistics may remain after the underlying personal records are removed. Provider backups and logs expire under their retention policies.
• Local app data remains on your phone until you remove it or uninstall the app.

Your choices and rights

On every plan, Settings → Account → Download your data lets you request your account records and portable data from the requesting phone in one file. This request temporarily uploads that phone's settings, writing, drafts and Nusen action history to prepare the file; it does not send the download to OpenAI. Other phones may hold additional unsynced data. Private Apple app identities, selection tokens and measurements stay on the phone and are excluded. The download link is sent to your verified email and is valid for 24 hours.

You can delete your notes or account in Settings. Account deletion removes your linked records and saved writing, and clears Nusen's local choices on that device. Unlinked anonymous feedback cannot be associated with your account. Deleting Nusen does not cancel an App Store subscription; manage subscriptions with Apple.

You can change Screen Time and notification permissions in iOS Settings. You can unsubscribe from optional emails or withdraw your consent by contacting us; withdrawal does not affect processing already carried out lawfully.

You may request access, correction, erasure, restriction or portability of your personal data, or object to processing based on legitimate interests, at simon@skpd.studio. We may need to verify your identity. You can complain to the data protection authority in Cyprus or your local authority in the EU/EEA.

Changes

We will update this page when Nusen's features or data handling change and show the new date above. If a change materially affects your choices, we will give you a suitable notice.