Privacy

Last updated 23 September 2026

Apprehension is played outdoors, so it has to know where you are. This page says what it does with that, and with everything else it touches. The short version: your runs stay on your handset unless you choose to send one, there are no ads and no analytics, and nothing is sold.

Who is responsible

Apprehension is published under the name Duskglade by Daniel Hollands, who is the data controller for the personal data described here. For anything on this page, email daniel at duskglade dot co dot uk.

Apprehension is for adults

The game is for players aged 18 and over. We don’t knowingly collect data from anyone younger, and if you think a child has sent us something, email us and we’ll delete it.

Your location

The game needs your precise location while you play, including when the screen is off or the app is in the background, because the game carries on in your pocket. It only tracks you while a game is running; the rest of the time the app doesn’t ask for your position. Your handset asks your permission first, and you can change it in your handset’s settings at any time.

Each run is recorded on your handset: every position fix, with its accuracy, speed and heading, alongside what the game was doing at the time. That record is what draws your run history and your route afterwards. It stays on your handset until you delete it, which you can do one run at a time or all at once, and uninstalling the app deletes every run.

A run only leaves your handset when you send it yourself:

• Exporting a route. You can export a run as a GPX file and share it wherever you like, such as a fitness app. Once shared, it’s in the hands of whatever you shared it with.
• Sharing a run’s log. You can share a run’s raw log the same way.
• Answering the question at the end of a run (see below).

If your handset backs up app data to iCloud or Google, your runs can be included in that backup, held by Apple or Google under your account.

The map

Map images are downloaded from a map provider while you play: MapTiler, or the OpenStreetMap Foundation’s servers. Like any web request, this tells the provider your IP address and roughly which area of the map you’re looking at. We don’t send them your position or anything else about you.

Crash reports

When the app crashes or hits an error, it sends a report to Sentry, a service that collects them for us, so we can fix it. A report holds what went wrong, which screen you were on, your handset’s model and operating system, the app’s version, and which park and mode you were playing. It never holds your position, your name or your email, and it never includes a screenshot.

Sentry stores this in its European Union data region, in Germany. We send these reports because we have a legitimate interest in the app working.

Feedback you send us

There are two ways to send feedback from inside the app, and both go to Sentry in the same way as crash reports. Both are your choice each time; nothing is sent until you press Send.

• The question at the end of a run. Answering sends what you type and that run’s log, which records where you played and the route you took. Skipping sends nothing.
• The feedback form in the app. It sends what you write, plus your name and email if you choose to give them, and a screenshot if you choose to add one. A screenshot shows whatever was on screen, and a screen with the map on it shows where you are.

We use feedback to fix and improve the game, and delete it once it’s no longer needed for that.

What the app doesn’t do

• No ads, and no advertising or tracking code of any kind.
• No analytics. We don’t measure how you use the app.
• No accounts. You don’t sign in, so there’s nothing about you held on a server.
• Nothing is sold. We don’t sell or rent any data, to anyone.

Features that aren’t in the app yet

Saving a run to Apple Health or Health Connect, and uploading a run to Strava, are planned but not in the app today. Before either ships, this page will be updated to say exactly what it reads and writes. Whatever the details, these rules will hold:

• Health data is only read or written with your permission, asked for each kind of data, and you can withdraw it in your handset’s settings.
• Health data is never used for advertising, never sold, and never shared with anyone except where you ask, such as a service you connect yourself.
• Strava only receives what you choose to upload, and disconnecting it stops us sending anything more.

This website

This website sets no cookies, has no analytics, and loads nothing from anyone else. It’s hosted by GitHub, which records the IP address of every visit to keep the site secure, as any web host does; see GitHub’s privacy statement. We don’t see or use those records.

If you email us, we keep the email for as long as it’s needed to answer it.

Your rights

Under UK data protection law you can ask for a copy of the personal data we hold about you, ask us to correct it, ask us to delete it, or object to how we use it. Most of what Apprehension holds is on your handset, where you can delete it yourself. For anything you’ve sent us, email us and say what you’d like; we’ll reply within a month.

If you’re unhappy with how we’ve handled your data, you can complain to the Information Commissioner’s Office at ico.org.uk.

Changes to this page

When what the app collects changes, this page changes first, and the date at the top says when it last did.