Privacy policy
Effective 13 November 2026
The short version. You can play Klunk without an account, and then nothing about your games leaves your phone. If you make an account, we keep your handle, your birth year, a scrambled form of your password and your scores, so boards, streaks and friends work. Ads come from Google AdMob and purchases go through Apple or Google and RevenueCat. We never sell your data. You can delete your account in the app at any time.
This policy explains how Klunk ("Klunk", "we", "us"), a mobile game made by an independent developer, handles information when you use the Klunk app for iPhone and Android and the website klunk-io.com. Questions or requests: support@klunk-io.com.
1. Playing without an account
You can play endless runs without signing in. Your settings (sound, haptics, reduced motion, reminders), your best score on this phone, the themes you picked and the times you usually open the app are stored only on your phone. They are never sent to us. Uninstalling the app removes them.
2. What we collect when you make an account
| Information | Why we need it |
|---|---|
| Handle (the name you choose) | To sign you in and to show you on leaderboards and to friends. Your handle is public. |
| Password | To sign you in. We store only a one-way hash (bcrypt), never the password itself. |
| Birth year | Klunk is for players aged 13 and over. We also use it to decide whether ads may be personalised (only from 16). It is never shown to anyone, and the app never receives it back. |
| Game results: the tower seed, the timing of your taps, floors reached, Perfects, and when you played | To check that each score was really played (we replay your taps on our server), and to run the all-time, weekly, daily and friends boards. |
| Streaks and stats: current and best daily streak, best floors, total Perfects, daily towers played, equipped theme and sound | For streaks, unlocking themes, and showing your theme on the boards. |
| Friends: the handles you follow | For the friends board and your friends list. |
| Purchases: which items you own (Remove ads, theme packs), store transaction ids and product ids | To unlock what you bought on every phone you sign in on, and to handle refunds. |
We do not ask for your real name, email address, phone number, contacts, photos or location. The app does not request access to your camera, microphone, files or location.
3. Information collected automatically
- Server logs. When the app talks to our server, the server records technical details such as your IP address, the time, and which address was requested. We use them to keep the service running and secure (for example, to limit repeated sign-in attempts). Logs are rotated automatically and kept only as long as needed for that.
- Advertising. See section 4.
Klunk does not use analytics or tracking tools of its own.
4. Ads
Klunk shows ads from Google AdMob between some runs, plus optional ads you choose to watch (for example, to continue an unranked run). Players who bought Remove ads see no ads.
- Google may collect device information such as your advertising ID, IP address and device model, to show, measure and protect ads. See how Google uses information from apps that use its services.
- Ads are personalised only if you are 16 or older and you allowed it: on iPhone through the "Allow tracking" prompt, and where the law requires it through Google's consent form. Everyone else gets non-personalised ads. Ad requests for players under 16 are tagged as such.
- Ads are limited to content rated for teens.
- You can change your ad choices at any time: in Klunk's Settings (where your region requires a consent form), in your iPhone's Settings › Privacy & Security › Tracking, or in your Android device's ad settings.
5. Purchases
Purchases are made through the Apple App Store or Google Play. They handle your payment details; we never see them. RevenueCat processes the purchase receipts for us and tells our server what you own. RevenueCat receives your Klunk account ID (a random identifier, not your handle) and your purchase history. See RevenueCat's privacy policy.
6. Notifications
If you turn on reminders, the app schedules them on your phone (for example, "Your 4-day streak ends in 5 hours"). They are created on the device from information the app already has. We do not use push notification services, and no notification token is sent to us.
7. Who we share information with
We do not sell or rent your information. We share it only with:
- Other players: your handle, scores, streak and equipped theme appear on leaderboards and to people who follow you.
- Service providers who run parts of Klunk for us: DigitalOcean (server hosting), Google AdMob (ads), RevenueCat, Apple and Google (purchases).
- Authorities, if the law requires it.
Our servers and these providers may process information outside your country. Where that happens, we rely on the providers' safeguards for international transfers.
8. How long we keep it
- Account information, game results, streaks and friends: as long as you have an account.
- When you delete your account, you are signed out everywhere and removed from all boards and friends lists right away. Everything is permanently erased within 7 days.
- To stop someone else from taking your handle and pretending to be you, we keep a one-way hash of the handle (it can't be turned back into the handle) after deletion.
- Records of purchase events may be kept, no longer linked to your account, where we need them for refunds, accounting or fraud prevention. Apple, Google and RevenueCat keep their own purchase records under their policies.
9. Your choices and rights
You can see your handle, streaks and scores in the app, turn reminders and personalised ads off, and delete your account at any time. Depending on where you live (for example under the Philippine Data Privacy Act of 2012 or the EU/UK GDPR), you may also have the right to access, correct, export or erase your information, and to object to or restrict its use. To use any of these rights, email support@klunk-io.com from any address with your handle. We may ask you to confirm the account is yours. You can also complain to your data protection authority; in the Philippines, that is the National Privacy Commission.
How to delete your account: klunk-io.com/delete-account.
10. Children
Klunk accounts are for people aged 13 and over; the app asks for your birth year and won't create an account for anyone younger. If you believe a child under 13 has made an account, email us and we will delete it.
11. Security
The app talks to our server only over encrypted connections (HTTPS). Passwords are stored only as hashes, and access to the server is restricted. No system is perfectly secure, but we work to protect your information and will act quickly if something goes wrong.
12. Changes
If we change this policy, we will update the date at the top. If the change is significant, we will also tell you in the app.