Last updated 23 September 2026
Diction is made by FJ Labs, based in the United Kingdom, and FJ Labs is the data controller for the little it collects. The short version: there is no account, we do not know who you are, and the words you look at stay on your phone.
All of this is stored on your phone and in the app's shared container, so the widget can read it. None of it reaches us.
The whole dictionary ships inside the app, so Diction does not ask a server which word to show you. Delete the app and all of this goes with it.
Anonymous usage data, through PostHog. Diction records events such as the app being opened, a theme being changed, the paywall being seen and a purchase being completed, along with the device model, the iOS version and the app version. These events are deliberately anonymous: the app never calls PostHog's identify function, never creates a person profile and never sends your name, your email address or anything you have typed. We use this to see which parts of the app people actually use, and nothing else. PostHog stores it in the United States.
Purchase data, through RevenueCat. If you buy Diction Pro or start a free trial, RevenueCat records the purchase against an anonymous identifier so the app knows you are entitled to it on your devices. Apple takes the payment, and neither RevenueCat nor we ever see your card details.
We do not sell data, we do not share it for advertising, and we do not build a profile of you.
If you turn on the daily reminder, Diction schedules the notifications locally on your phone. Because every word already lives in the app, the reminder can name the actual word without a server ever being involved. No push service is used and no token is sent anywhere. Turn them off in the app's Settings, or in iOS Settings under Notifications.
Under UK and EU data protection law, the anonymous usage data is processed on the basis of our legitimate interest in understanding how the app is used and making it better, balanced against the fact that it cannot be tied back to you. Purchase data is processed to perform the contract you enter into when you buy Diction Pro.
Anonymous usage events are kept for up to 12 months and then deleted. Purchase records are kept for as long as you hold a subscription and for 7 years afterwards, because tax law requires it.
You have the right to ask what we hold about you, to have it corrected or deleted, to object to processing, and to complain to the Information Commissioner's Office. In practice, because the analytics are anonymous, we usually have no way to find records that belong to a particular person, and we will tell you so honestly rather than pretend otherwise. Write to us and we will do what we can.
You can switch the analytics off entirely: open Settings inside Diction and turn off Share anonymous usage data. Nothing is sent from that point on, and the app works exactly the same.
Diction is not aimed at children under 13, and we do not knowingly collect anything from them. If you believe a child has provided information, please tell us and we will delete it.
Where data leaves the UK, it goes to providers operating under the UK's approved transfer arrangements.
If this policy changes, the date at the top changes with it, and we will say so in the app if the change is significant.
Write to support.diction.app@gmail.com.