Last updated: October 18, 2026

TNODES collects as little personal data as a free, ad-supported game needs, and never asks you to create an account. This policy explains what our apps collect, why, who we share it with, and how you can control it.

Who we are and what this covers#

This policy applies to all apps and games published by TNODES on Google Play and the Apple App Store, including Gravity Switch: Block Puzzle, and to our website tnodes.org.

• Publisher: TNODES
• Contact: customerservice@tnodes.org
• Website: https://tnodes.org
• Postal address: Daejeon, South Korea

Our games are free to play. They show ads and offer optional in-app purchases through Google Play or the App Store.

Information we collect#

We do not ask for your name, email, phone number or contacts. Our apps and the services they use collect the following automatically:

Google Play or Apple processes all payments. We never receive your card or bank details.

If you email us, we receive your email address and whatever you write, including the version and Player ID the game adds to the message.

How we use it#

• Provide the game: run levels, keep your progress, deliver purchases and restore them on a new device.
• Cloud save: if you sign in with Google Play Games, your progress is saved in your Google account so you can restore it.
• Improve the game: understand which levels are too hard or too easy, and fix crashes.
• Ads: show ads, including personalised ads where you have agreed, and measure them.
• Attribution: understand which ad campaigns brought new players.
• Notifications: send reminders you can switch off in the game’s Settings or in your phone’s settings.
• Security: detect fraud, cheating and abuse of purchases.
• Support: answer your messages.

Legal bases (EEA, UK and Switzerland): we rely on the contract with you to provide the game and purchases; on your consent for personalised ads and for analytics where consent is required; and on our legitimate interests for security, fixing crashes and non-personalised ads. You can withdraw consent at any time (see Advertising and your choices).

Third-party services we use#

Our apps use these services. Not every game uses every service. Each one processes data under its own privacy policy, available on its website.

Analytics services process data on our behalf. Ad networks may also use data for their own advertising purposes, as described in their policies. Google’s privacy policy: https://policies.google.com/privacy

Advertising and your choices#

• Consent form: in the EEA, UK, Switzerland and some US states, the game asks for your choices before ads or analytics start. If you decline, you still see ads, but they are not personalised.
• Change your mind: open the privacy options in the game’s Settings at any time (shown where the law requires it).
• Advertising ID on Android: you can reset or delete it in Android Settings → Privacy → Ads.
• Tracking on iPhone and iPad: the game asks for your permission before using Apple’s advertising identifier. If you don’t allow it, the identifier is not used. You can change your choice at any time in Settings → Privacy & Security → Tracking.
• Fewer ads: in games that offer it, the Remove Ads purchase turns off ads between levels. Rewarded ads stay optional.
• Notifications: switch them off in the game’s Settings or in your phone’s settings.

We do not sell your personal data for money. Under some US state laws (such as California’s), sharing data with ad partners for targeted ads can count as a “sale” or “sharing”. You can opt out through the US privacy option in the game’s Settings.

How long we keep data, and where#

• Analytics data: kept for up to 14 months, then deleted automatically.
• Game progress: stored on your device; if you use cloud save, also in your Google account until you delete it there or ask us.
• Purchase records: kept as long as needed to deliver and restore purchases and as required by tax and accounting law.
• Support emails: kept as long as needed to help you, then deleted.
• Third-party services keep data according to their own policies.

Our service providers may process data outside your country, including in the United States. Where the law requires it, they use safeguards such as the European Commission’s Standard Contractual Clauses.

Data is sent over encrypted connections, and we limit access to it. No system is completely secure, but we work to protect your data.

Our website#

Our website tnodes.org has no accounts, ads, analytics or tracking cookies, and we do not collect personal data through it.

• Hosting: the site is hosted on GitHub Pages. Like any web host, GitHub records technical information such as your IP address when you visit, to run and secure the service, as described in the Privacy Statement: https://tnodes.org/privacy-policy
• Videos: game trailers are shown as a picture until you tap play. Only then does the video load from YouTube (in its privacy-enhanced mode), and Google’s privacy policy applies. Short gameplay clips that play by themselves are stored on our own site and don’t involve YouTube.
• Store links: links to Google Play, the App Store and YouTube take you to those sites, where their own policies apply.
• Email: if you email us from the website, we handle your message as described above.

Children#

Our games are not directed at children under 13 (or under 16 in the EEA and UK), and we do not knowingly collect personal data from them. If you believe a child has given us personal data, contact us and we will delete it.

Your rights#

Depending on where you live (for example the EEA, UK, Switzerland, US states such as California, or South Korea), you may have the right to:

• access the personal data we hold about you and get a copy;
• correct it;
• have it deleted;
• restrict or object to its use;
• withdraw consent at any time, without affecting earlier processing;
• opt out of targeted advertising or the “sale” or “sharing” of your data;
• complain to your local data protection authority.

How to ask: email customerservice@tnodes.org. In games that have it, use Settings → Contact us, which adds your Player ID; otherwise tell us the game’s name and your device type. Because we have no accounts, this is how we find your data. We will reply within 30 days and will not treat you differently for using your rights.

Uninstalling the app stops all further collection. To delete your cloud save, use your Google Play Games settings or ask us.

Changes and contact#

We update this policy when our apps or the services they use change. The date at the top shows the latest version; for important changes we will also tell you in the game.

Questions or requests: customerservice@tnodes.org