Privacy policy

Effective 15 November 2026

This page explains how the Halfsure app handles your information on iPhone, iPad and Mac. "We" means the developer of Halfsure, Yash Khetan.

What we collect

Nothing. The app has no server of its own and makes no internet requests of its own. It does not send personal information, usage data or device data to us or to anyone else. We cannot see who uses the app or what they do in it.

No account

You do not sign up or log in. The app never asks for your email address, phone number or school.

The app asks you to type a nickname once. It is used on your share cards and challenge links, and stays on your device unless you share one of those. You can use any name you like.

No tracking, analytics or ads

• The app has no analytics or crash-reporting tools.
• It shows no ads and contains no advertising code.
• It does not track you across other apps or websites.
• It contains no third-party code. Everything it needs is built into the app.

What the app stores

To run the game, the app saves on your device:

• your answers, how sure you said you were, and whether you were right
• your points, the days you played, your weekly progress and titles you have earned
• anything you type: forecasts you make and your reasons, Decision Journal entries, and your explanations in Explain It
• drawings you make with Apple Pencil on iPad in Explain It
• your settings, such as reminder time, sound and text size
• your age band (see below)

None of this is sent to us.

iCloud sync. If iCloud sync is available and turned on for the app, a copy of this data is kept in your own private iCloud database, so it is the same on your iPhone, iPad and Mac. That copy belongs to your Apple Account. We cannot see it, and Apple handles it under its own privacy policy. Your Explain It explanations and drawings are never synced. They stay on the device where you made them.

Your age

When you first open the app, it asks for the year you were born. It uses the year once to work out an age band (under 13, 13 to 15, 16 to 17, or adult) and keeps only the band. The year itself is not stored.

Halfsure is for people aged 13 and over. If the year shows you are under 13, the app stops and cannot be used. It remembers that one fact on the device so the question is not offered again. That flag stays on the device even after you delete your data, and is removed only when the app is deleted.

If you are 13 to 17

• Hunches close for the night after a late session and open again at 6 am.
• Some questions are left out, including questions about death.
• The thinking partner (below) is switched off when your age band is set.

The thinking partner

The thinking partner is an optional helper that may ask you one question after you lock in an answer. It is off by default. If you switch it on in Settings, it uses Apple's language model that runs on your device. What you write is not sent to us, to Apple or to anyone else. On devices without that model, the app shows a written question instead.

Purchases

Halfsure Plus is sold through the App Store as a monthly subscription, a yearly subscription or a one-time lifetime purchase. Apple handles the payment. We never see your name, card or payment details. The app checks with the App Store on your device to see whether you own Plus. No purchase information is sent to us.

Reminders

If you allow notifications, the app schedules reminders on your device: an optional daily nudge, a note when a forecast or decision is due, and the weekly letter. These are local notifications created by the app itself. Nothing is sent to us, and we cannot send you messages.

Sharing a challenge or a result

You can share your daily result as a card or a challenge link, using the share button. You choose where it goes, for example a message to a friend. The link and the card contain only:

• the number of the day's set
• how sure you were in each round and whether you were right
• the score you called before you started
• your nickname, if you have set one

They do not contain your answers or anything else about you. Nothing is shared unless you share it, and it is never sent to us.

Playing with other people

In Table Mode, people take turns on one device and type nicknames. Those nicknames and the game results are kept on that device (and in its owner's private iCloud, if sync is on). If you share a Table result, the text includes the players' nicknames and ranks. Ask the others before you share.

The widget

The optional widget shows the day's Hunch. The app writes a small file on the device for it, holding the day's question, the days played this week and your next forecast. The file stays on the device and is not sent anywhere.

Permissions

The only permission the app asks for is notifications, and only if you choose to turn on reminders. It does not use your location, camera, microphone, contacts, photos or health data.

Deleting your data

• In the app, go to Settings and tap Delete my data. This deletes everything Halfsure has kept on the device and cancels its reminders.
• Deleting the app also deletes everything it stored on that device.
• To remove a copy kept in your iCloud account, use your device's iCloud settings: open Settings, tap your name, then iCloud, and manage the storage for Halfsure.

Because we hold no data about you, there is nothing for us to delete on our side.

Children

Halfsure is not for children under 13, and the app stops if a player says they are under 13. We do not knowingly collect information from anyone, of any age.

Your rights

Privacy laws such as the GDPR, the UK GDPR and the California Consumer Privacy Act give you rights to see, correct, delete or move personal data that a company holds about you. Halfsure does not send any of your data to us, so we hold nothing to show, correct, delete or move. Everything the app stores is on your devices or in your own iCloud account, and you control it there. We do not sell or share personal information.

Not a medical or psychological tool

Halfsure is a game about judging how sure you are. It does not diagnose, treat or measure any health condition, and its scores are not a psychological assessment.

Changes to this policy

If we change how the app handles information, we will update this page and the date at the top. If a change means the app starts collecting data, we will say so here before that version is released.

Contact

Questions about this policy: support@dpseven.com. Help with the app is on the support page.