Privacy Policy

Last updated: 6 November 2026

the short version
  • We collect only what our apps need to work, improve and stay secure, and we tell you what that is.
  • We never sell your personal data.
  • Payments are handled by Apple or Google. We never see your payment card details.
  • You can ask to see, correct or delete your data at any time. See Deleting your data.

Who we are

OP Development LTD ("OP Development", "we", "us", "our") is a private limited company registered in England and Wales under company number 17560663, with its registered office at 66 Paul Street, London, EC2A 4NA, United Kingdom. We are an independent studio specialising in mobile applications, interactive mini-games and digital tools.

We are the data controller for the personal data described in this policy. That means we decide how and why it is used, and we are responsible for looking after it. You can reach us about anything in this policy using the details in Contact us.

What this policy covers

This policy applies to the mobile apps, mini-games and digital tools we publish (together, "our apps") and to this website. It explains what personal data we collect, why, who we share it with, how long we keep it, and the choices and rights you have.

Not every app collects every type of data listed below. Each app's store listing (the App Store privacy details and the Google Play Data safety section) summarises what that particular app collects. If an app has a feature that needs extra information, we explain it inside the app when you use that feature, and that explanation forms part of this policy.

Information we collect

Information you give us

  • When you contact us: your name (if you give it), email address, the content of your message and anything you choose to include, such as the app's name or your device model.
  • If an app lets you create an account: your email address or sign-in identifier, a display name, and what you save in the app, such as game progress, scores or settings.
  • If you give feedback or join a beta test: your responses and any contact details you provide.

Information collected automatically when you use our apps

  • Device and app information: device model, operating system version, app version, language, region setting and time zone.
  • Usage information: how features are used, such as screens viewed, levels started or completed, and session length. We use this in aggregated form wherever possible.
  • Diagnostics: crash reports and performance data, such as errors and load times.
  • Identifiers: a random identifier created when you install an app, used to keep your data together. Only in apps that show advertising, and only where you allow it, your device's advertising identifier (see Advertising).
  • Approximate location: your country or region, worked out from your IP address. We do not collect precise (GPS) location unless an app clearly asks for it to make a feature work and you agree.

Purchases

In-app purchases and subscriptions are processed by Apple (App Store) or Google (Google Play), under their own terms and privacy policies. To deliver what you bought, we receive limited details from them: the product, price and currency, the date, a transaction ID and, for subscriptions, whether the subscription is active. We never receive your card number or billing address.

This website

This website does not use cookies, analytics or advertising trackers, and it does not load content from third parties. Our hosting provider may keep standard server logs (such as IP address, browser type and the time of a request) to keep the site secure and running.

How we use it, and why

UK data protection law says we need a lawful basis for each way we use personal data. Here is what we do, and the basis we rely on.

What we do Lawful basis
Provide our apps and their features, save your progress, and deliver and restore your purchases. Contract: we need it to provide what you asked for.
Reply to your messages and help with support requests. Legitimate interests: helping you, and running our business well.
Find and fix crashes and bugs, keep our apps secure and prevent fraud, cheating and abuse. Legitimate interests: keeping our apps working and safe.
Understand how our apps are used so we can improve them and plan new features. Legitimate interests, or your consent where the law requires it.
Show advertising in free apps. Your consent for personalised advertising and for access to device identifiers; legitimate interests for non-personalised advertising where the law allows.
Keep financial records, meet tax and legal duties, and respond to lawful requests. Legal obligation.

We do not use your personal data to make decisions about you that have legal or similarly significant effects based solely on automated processing.

Advertising

Some free apps may show ads served by advertising partners. If an app shows ads:

  • In the UK, the EEA and Switzerland, we ask for your consent before showing personalised ads or accessing your device for advertising purposes. You can change your choice at any time in the app's settings.
  • On iPhone and iPad, we ask for your permission through Apple's App Tracking Transparency prompt before tracking you across other companies' apps and websites. If you say no, we don't.
  • You can reset or limit your advertising identifier at any time in your device's settings.
  • We do not knowingly show personalised advertising to children.

Apps that show ads name their advertising partners inside the app, for example on a privacy or settings screen.

Who we share it with

We do not sell your personal data. We share it only with:

  • Service providers who process data on our behalf under a contract with us, such as cloud hosting and database providers, crash reporting and analytics tools, purchase and subscription management services, and our email provider. They may use it only to provide their service to us.
  • Apple and Google, as the app stores that distribute our apps and process payments.
  • Advertising partners, only in apps that show ads and only as described in Advertising.
  • Authorities and others where the law requires it, or where it is necessary to protect the rights, safety or security of our users, the public or us.
  • A buyer or successor, if our business or part of it is sold or reorganised. This policy would continue to protect your data.

International transfers

Some of our service providers process data outside the UK, for example in the European Economic Area or the United States. When that happens we make sure appropriate safeguards are in place, such as UK adequacy regulations, the UK International Data Transfer Agreement or the UK Addendum to the EU Standard Contractual Clauses.

How long we keep it

We keep personal data only for as long as we need it for the purposes above. In practice:

  • Support emails: up to 24 months after the conversation ends.
  • Account data: while your account is active. When you delete your account, we delete its data within 30 days, unless the law requires us to keep part of it.
  • Diagnostics and usage data: up to 26 months, after which it is deleted or kept only in anonymised form.
  • Purchase records: for as long as tax and accounting law requires, normally six years.
  • Data stored only on your device, such as local game saves, stays on your device and is removed when you delete the app.

Children

Our apps are made for a general audience and are not directed at children under 13. We do not knowingly collect personal data from children under 13 (or the minimum age in your country) without a parent's or guardian's consent.

Where an app is likely to be used by children, we design it with their privacy in mind, in line with the UK Information Commissioner's Children's code: high-privacy settings by default, only essential data, and no personalised advertising. If you believe a child has given us personal data, please contact us and we will delete it.

Your rights

Under UK data protection law (the UK GDPR and the Data Protection Act 2018) you have the right to:

  • Access the personal data we hold about you and get a copy of it.
  • Correct data that is wrong or incomplete.
  • Delete your data (see Deleting your data).
  • Restrict how we use your data, or object to us using it on the basis of legitimate interests.
  • Move data you gave us to another service (data portability).
  • Withdraw consent at any time, where we rely on consent. This does not affect anything we did before you withdrew it.

To use any of these rights, email us. It is free in most cases. We will reply within one month, and we may need to ask for information to confirm it is really you. If you live outside the UK, for example in the EEA or California, you may have similar rights under local law, and we will honour requests wherever you live.

If you are unhappy with how we have handled your data, you can complain to the UK Information Commissioner's Office (ICO) at ico.org.uk/make-a-complaint or on 0303 123 1113. We would appreciate the chance to put things right first, so please contact us before you go to the ICO.

Deleting your data

You can ask us to delete your account and personal data at any time, from any app, without needing to give a reason.

Option 1: in the app

If an app has accounts, you will find a delete account option in that app's settings. It removes your account and the data linked to it.

Option 2: by email

Email opdevelopment@duck.com with the subject "Delete my data". Tell us which app (or apps) you use, and the email address or user ID linked to your data, if the app shows one. We will confirm by email once your data has been deleted, within 30 days.

What gets deleted, and what we keep

  • We delete your account, profile, saved progress and the identifiers linked to them.
  • We may keep limited records where the law requires it, such as purchase records for tax purposes, and statistics that have been anonymised so they can no longer identify you.
  • Uninstalling an app removes data stored only on your device, but it does not delete data held on our servers. Use one of the options above for that.
  • Deleting your data does not cancel a subscription. Manage subscriptions in your App Store or Google Play account settings.

Security

We protect personal data with measures that fit the risk, including encryption in transit, access controls that limit who can see data, and service providers with strong security practices. No system is perfectly secure, but if a data breach affects you, we will tell you and the ICO where the law requires it.

Changes to this policy

We may update this policy from time to time, for example when we launch a new app or the law changes. We will change the "last updated" date at the top, and if the changes are significant we will also tell you in the app or on this website.

Contact us

Questions about privacy or this policy, or a request about your data? Get in touch:

OP Development LTD · Registered in England & Wales · Company no. 17560663
Registered office: 66 Paul Street, London, EC2A 4NA, United Kingdom