Privacy Policy
What stays on your device
Your scores, bests, streaks, level progress and settings are stored locally on your iPhone. None of this is uploaded by us. Deleting the app deletes this data permanently.
Game Center (global leaderboards)
Leaderboards are provided by Apple's Game Center. If you are signed in to Game Center, your scores are submitted to Apple together with your Game Center player identity, and Apple shows them on the leaderboard under your Game Center nickname. We never receive your name, email, or Apple ID — the app only reads the leaderboard entries Apple exposes (nicknames and scores) in order to display them.
Game Center is governed by Apple's Privacy Policy. You can play without Game Center; leaderboards are simply unavailable then.
Notifications
If you allow notifications, the app schedules local reminders (for example, that a new daily board is available). These are created and delivered entirely on your device — there is no push server and nothing is sent to us. You can disable them any time in Settings.
In-app purchases
Tack offers two optional auto-renewing subscriptions, Tack Pro and Tack Pro Max. Payment is processed by Apple; we never see your payment details. To recognise the purchase across reinstalls, the app uses RevenueCat, a purchase infrastructure provider. RevenueCat receives the App Store receipt and a random app-generated identifier — not your name, email, or Apple ID. See RevenueCat's Privacy Policy.
Song rounds are fetched from our game server (trackattack.mehro.ch). Requests are ordinary HTTPS calls used only to serve the round; we keep no per-user logs and no profiles.
Song previews are official 30-second clips provided via Apple, streamed on demand and never stored on your device or our servers.
My Music mode reads your Apple Music library on your device. To play a snippet of each quiz song, that song's title is looked up via Apple's public iTunes preview service (the same previews the rest of the app uses) — your library is never sent to our servers, and the wrong-answer choices are drawn from your own library with no lookup at all.
Playlists you create in Tack are written to your own Apple Music library when you tap Save, and nowhere else. Only songs already in your library can be added; the app never searches the Apple Music catalogue.
No ads, no analytics, no accounts, no tracking. Leaderboards are Game Center, operated by Apple under Apple's privacy policy.
Challenge links
Sharing a round creates a short link. To make that link work we store, on our server, a seven-character code, the round it points at, when it was made, and a count of how many times it has been played — the link stops working after four plays, so a paid pack cannot be handed to the whole internet through one link. No part of that is tied to you. We do not store who created a link, who opened it, or what anyone scored.
Packs you publish
This is the one place the app sends us something you wrote, and it only happens when you tap Publish.
- We store the display name you choose, the pack’s title and blurb, and the list of songs. All of it is public — that is the point of publishing.
- The display name is whatever you type. It is not verified, and it does not have to be your real name. We recommend it isn’t.
- There is still no account: publishing is authorised by a random token your device keeps. We store only a hash of it, so even we cannot use our own database to publish as you.
- We never receive your email, phone number, contacts or Apple ID.
Reporting. Anyone can report a pack. We store the report and a salted hash of the reporter — enough to count one report per person, not enough to identify them. Reported packs can be hidden, and a hidden pack stops being served to anyone.
Removal. Want a pack you published taken down? Email us at no-reply@mehro.ch with the pack name and we will remove it.
Song lists you paste
A pasted list is parsed and kept on your device. It is never sent to our servers. Each title is looked up through Apple’s public preview service to find its 30-second clip, exactly as My Music does. The clipboard is only read when you tap Paste from clipboard.
Coins
Coins are earned by playing and are stored on your device only. They are never sold, never bought, and never leave your iPhone.
Sharing a score
Tapping Share hands a line of text to iOS's own share sheet. You choose where it goes; the app never sends it anywhere, and we never see it or know that you shared. The text ends with a link to our App Store page.
That link carries a marker (ct=share) telling Apple the visit came from
a shared score rather than from search. Apple reports this back to us only as
aggregate counts — how many installs came from shares in total. It is
not tied to you, to the person you sent it to, or to any device.
Ratings
The app may occasionally ask you to rate it. That prompt is presented by iOS itself, the rating goes to Apple, and the app is not told what you chose or whether you responded at all.
What we don't do
- No accounts, and no collection of your email, phone number or contacts. The only name we ever hold is the display name you type when you publish a pack — and you choose what that is.
- No third-party analytics SDKs.
- No selling of data — we have nothing to sell.
- No profiles. We run a game server, but it serves rounds — it does not build a picture of you.
- No advertising SDKs of any kind.
Children
The app is suitable for all ages. Nothing is collected from anyone by simply playing. Publishing a pack is the only route that stores anything, it is never required to play, and it asks for a display name you invent rather than any real detail about you.
Changes
If a future version changes any of the above, this page will be updated before that version ships, and the App Store privacy label will be kept in sync.