Coreline — Privacy Policy

Last updated: August 2026

Coreline is a puzzle game. There is no account, no advertising, no analytics

and no third-party tracking of any kind. Almost everything stays on your

device. Two features talk to a server, and this policy explains exactly what

they send.

What stays on your device

Your progress — cores charged, scores, best runs, streaks, the codex, your

theme and your settings — is stored on your phone. So is a small on-device

record of attempts, burnouts and rewires, which is used only to tune the

game's difficulty. None of it leaves the device unless you use one of the two

features below.

Backing up your progress

So that a lost or replaced phone does not cost you the campaign, the game

backs your progress up automatically after you charge a core.

• It sends the same progress data listed above to a server operated by the

developer.

• It is stored under a recovery code that the app generates. The server

keeps only a one-way hash of that code, never the code itself, so the save

can be returned to whoever presents the code and to nobody else.

• The recovery code is shown to you in Settings. It is the only way to restore

a save, so keep it if you want that ability.

• No name, email address, phone number, contacts, location or advertising

identifier is ever sent or stored.

The Daily Core

If you play the Daily Core, the game sends that day's date, your score and how

long you took, so it can tell you how you compare with other players.

• It is sent with a pseudonymous identifier: a random value created on your

device the first time it is needed, then hashed. It is not your device ID, not

an advertising ID, and it is not linked to your backup or to you.

• It cannot be used to identify you, and it is not shared with anyone.

Things every web server sees

The server is hosted on Cloudflare. Like any server, it can see the IP address a

request comes from, and it briefly counts restore attempts per IP to stop abuse.

IP addresses are not used to build a profile and are not shared.

Deleting your data

Ask at the address below and any save held under your recovery code will be

deleted. Uninstalling the app removes everything held on your device.

Children

Coreline collects no personal information from anyone, including children.

Changes

Any change to this policy will be published here with a new date.

Contact: jufravazto@gmail.com