Terms of Service

Last updated: 18 September 2026 Service provided by: uğurcan güden (natural person / individual developer) Contact: [email protected]

These Terms of Service set out the conditions of your use of the Curiobox mobile application. By downloading, opening or using the application you accept these terms. If you do not accept them, do not use the application and remove it from your device.

How your data are processed is explained in a separate document: Privacy Policy. The two documents should be read together.

1. Description of the service

Curiobox is a word puzzle (crossword) game. The player unlocks a stage, solves the words in the puzzle by forming them from the letter circle, and receives a score based on time and hint usage.

The game is free to play and ad-supported. Interstitial ads are shown in the application (see section 4). An optional, paid subscription that removes the ads is offered (see section 5). The subscription is not mandatory; the whole game can be played without subscribing.

The server makes the game's decisions. Whether a word is correct, the active time elapsed, whether the stage has been completed and the final score are determined on the server, not in the application. The score, time or "completed" information sent by the application is not accepted. This is so that the game works under the same conditions for all players.

In this version the application does not contain a ranking (leaderboard) table. Your score is visible only to you.

2. You do not create an account — your identity lives on your device

Curiobox does not ask you for an e-mail address, phone number or password in order to create an account. (The only exception is the e-mail address you may optionally leave in the feedback form in section 8; it too serves only to let us reply to you and it does not create an account.) The first time you open the application, an anonymous player record is created for you on the server and the session token of this record is stored on your device.

This has direct consequences and you are deemed to have accepted them:

If you remove the application from your device, your progress cannot be recovered. The session token is deleted together with the device; when you reinstall the application you start as a new player. Your scores, your records and the stages you unlocked cannot be brought back.
When you change devices, your progress is not transferred. In this version there is no progress transfer, account recovery or backup feature.
This is not a malfunction but the known and accepted behaviour of the application.

The subscription is separate from this. Your subscription is tied to your store account and can be restored on another device; your game progress cannot be restored. The details are in section 5.

If someone else gains access to your device or your session token, they can also access your game record. The security of your device is your own responsibility.

3. Your username

The application automatically generates a readable username for you (example format: MorKirpi482). You can change this name from the Profile screen if you wish; changing it is not mandatory.

Username rules:

3–20 characters; letters, digits and underscore may be used. Turkish characters are accepted.
The name is unique system-wide; a difference in upper/lower case does not count as a separate name.
Names reserved by the system such as admin, curiobox, moderator cannot be taken.
Names containing profanity, insults, hate speech or offensive content are not accepted.
7 days must be waited between two name changes. A change request made before this period elapses is rejected by the server.

We do not recommend that you enter your real name, your e-mail address or any other personal information of yours as a username.

We may request that a username contrary to the rules be changed and, if necessary, may change or remove it ourselves.

4. Advertising

The application shows ads through Google AdMob.

An ad may appear only on the transition after the Result screen of a stage, as a full-screen interstitial. There is no banner ad on the game screen. The rewarded video placement is disabled in this version.
Ad display depends on switches managed from the server: the first few stages are ad-free and there is a minimum interval between two ads. We may change these thresholds in order to protect the game experience.
On iOS App Tracking Transparency (ATT) and in Europe Google's UMP consent screen is shown. If you do not give consent, ads are not personalised; in some cases no ad request is made at all. Your not giving consent does not affect your access to the game.
Premium subscribers see no ads.

The content of the ads is determined by Google; we are not responsible for the products and services of the advertisers. If you think an ad is inappropriate you can report it to us. Which data are processed within the scope of advertising is explained in section 4 of the Privacy Policy.

5. Premium subscription

Curiobox offers a single, monthly and automatically renewing subscription. It starts with a 7-day free trial.

5.1 Scope of the subscription

The only benefit of the subscription is the removal of the ads.

Game content, score calculation, time, the unlocking of stages and the difficulty level are not affected by the subscription. A non-premium player and a premium player have access to the whole game under the same conditions; a paid advantage does not change the fairness of the game.

5.2 Payment

Payment is made entirely through the App Store or Google Play. The price is shown in the store and may vary according to the country you are in. Your card details, your billing information and your identity information do not reach us.

Whether your subscription is valid is decided by our server, by asking Apple's and Google's verification services with the subscription identifiers obtained from the store; the application's own assertion is not accepted.

5.3 Free trial

The trial period is 7 days.
The authority to grant the trial entitlement lies with the store and this entitlement can be used once per store account. If you have used a trial before, the subscription starts directly as a paid one.
If you do not cancel at least 24 hours before the end of the trial period, the subscription continues as a paid one and the fee is charged.

5.4 Automatic renewal

The subscription renews automatically unless it is cancelled at least 24 hours before the end of the period.
The fee is charged to your store account within the 24 hours preceding the end of the current period.

5.5 Cancellation

Cancellation is done only from your device's account settings: App Store → Subscriptions or Google Play → Subscriptions. We cannot do this on your behalf.
Deleting the application does not cancel the subscription.
When you cancel, premium continues until the end of the period you have paid for; on that date the ads come back.

5.6 Refunds

The party to the purchase relationship is the store. Refund requests are subject to Apple's or Google's own refund policies and are submitted directly to the store. We cannot directly refund a payment that was made through the store.

5.7 Right of withdrawal

The subscription is a digital service whose performance begins at the moment of purchase. Turkish consumer protection legislation provides an exception to the right of withdrawal for digital content and services performed immediately. Nevertheless:

The stores' own refund policies apply independently of this and are in most cases more generous;
Your rights arising from the consumer protection legislation of the country you are in are reserved.

If you think you have experienced a problem, you can write first to the store and then to us.

5.8 Restoring purchases

There is a "Restore purchases" button in the application. On another device where you have signed in with the same store account, this button brings your subscription back.

This operation transfers only the subscription, not your game progress. Progress is tied to the anonymous player identity on the device (see section 2); the subscription, on the other hand, is tied to your store account. On the new device the ads are turned off, but your scores and the stages you unlocked do not come with it.

5.9 Billing problems

If the store cannot collect a payment and grants an extra payment period (grace period), your premium entitlement continues throughout that period. If the store account is suspended (account hold), the premium entitlement stops and ads are shown again until the billing problem is resolved.

6. Accepted use

You agree not to do the following while using the application:

Attempting to circumvent the rules of the game: attempting to report the score, the time, the number of hints or the progress to the server with false data, modifying the application or the network traffic for this purpose.
Attempting to circumvent subscription verification: sending a false purchase token, attempting to bypass store verification, or using tools intended to obtain the premium entitlement without paying.
Artificially influencing ad display or ad measurement: abusing the ad system by means of automated clicking, generating false impressions or similar methods.
Placing load on the server with automated tools (bots, scripts, excessive requests) or attempting to disrupt the service.
Attempting to bypass the security measures of the application or the server, to access other players' data, or to obtain content you are not authorised for (stages and words not yet published).
Reverse engineering the source code of the application, copying its content in bulk (including the word pool, puzzles and hints), or using them in another product.
Using a username that is offensive, misleading or unlawful for others.
Using the feedback form (see section 8) for purposes other than its own: sending spam, advertising or repetitive meaningless submissions, or trying out ways to exceed the daily submission limit.

We may invalidate the scores of a player who acts contrary to these rules, change their username, delete the feedback they sent, or suspend their access to the service.

7. Content and intellectual property

All content in the application — including the word pool, the puzzles (crosswords), the hints, the stage design, the texts, the interface design, the graphics and the "Curiobox" name and logo — is the property of uğurcan güden or the right of use has been obtained.

You are granted a limited, non-exclusive, non-transferable and revocable right of use to use the application for personal and non-commercial purposes, provided that you comply with these terms. This right does not mean a transfer of ownership. Purchasing a subscription does not extend the scope of this right; it only removes the ads.

Copying, reproducing, distributing or selling the content without permission, or using it to produce a derivative product, is prohibited.

No right is claimed over publicly available language data such as dictionaries and vocabulary; what is protected is their selection, arrangement and presentation within Curiobox.

8. Your feedback and the content you submit

In the application you can send us written feedback from Settings → "Write to us". You are not obliged to use this section.

8.1 How it works

You select a category (bug / suggestion / content error / payment / other) and write a message. If you wish, you add 1–5 stars and an e-mail address; both are optional and may be left empty.
The message length is limited (at least 10, at most 1000 characters) and the number of messages you can send in a day is limited. These limits are enforced on the server; a submission that hits the limit is rejected.
Feedback is one-way. There is no reply box, no messaging and no "my submissions" list inside the application; you cannot see the message you sent again in the application.
If a reply is needed and you left an e-mail address, we write the reply manually by e-mail. We give no undertaking to reply and no reply deadline.

8.2 Accepted content

You are responsible for the text you submit. You agree not to submit the following:

Texts containing insults, profanity, threats, hate speech or harassment.
Spam, advertising, link dumps or repetitive meaningless submissions.
Personal data: do not write information such as your password, your card number or your identity number. Do not submit another person's personal data either. The purpose of this field is not to collect personal data; we cannot be held liable for the consequences arising from such information being written here and we may delete such content.
Content that you have no right to share because it belongs to someone else.
Content that is unlawful or that incites an unlawful act.

We may delete or close a submission contrary to these rules without reading it, and in case of repetition suspend the relevant player's access to the service.

8.3 How we use the text you submit

The feedback you send us (bug reports, suggestions, satisfaction rating) may be used freely to improve the application, to fix bugs and to correct the content; no payment, royalty or claim of right arises in return for such use. For how long these records are kept and who has access to them is explained in section 7 of the Privacy Policy.

9. Modification and termination of the service

We may modify, suspend or terminate the service. Features may be added, changed or removed.

In the event that we terminate the service entirely:

We will try to announce this a reasonable time in advance within the application or on the store page.
The sale of new subscriptions is stopped and the renewal of existing subscriptions is turned off.
For the unused subscription period, you may request a refund through Apple or Google within the framework of the refund policies of the relevant store.
Your game data on the server may be deleted.

You too may terminate your use at any time by removing the application from your device (see section 2 — your progress cannot be recovered; section 5.5 — deleting the application does not cancel the subscription).

10. Disclaimer of warranty

The service is provided "as is" and "as available".

We do not undertake that the application will work without interruption, that it will be free of errors, that it will work in the same way on every device, that data will not be lost, or that the puzzle and hint content will be grammatically / lexically completely correct.

Curiobox is a game; it is not a language education institution, an exam preparation tool or a reference dictionary. The responsibility for the decisions you make relying on the language content in the application belongs to you.

This section does not remove your rights arising from consumer protection legislation or the obligation, imposed by legislation for a paid service, to perform free of defect.

11. Limitation of liability

To the extent permitted by the applicable legislation, we cannot be held liable for indirect damages, loss of data, loss of game progress or loss of profit arising from the use or the inability to use the service.

In any event our total liability is limited to the amount you have paid us for this service within the 12 months preceding the date on which the claim arose.

This limitation does not cover cases of intent and gross negligence and liabilities that cannot be limited under the legislation (in particular your rights arising from consumer protection legislation).

12. Age

Curiobox is rated for 4 years and over. The application contains no chat, no messaging between players and no display of user-generated content to other players. The feedback form in section 8 is one-way: the text written reaches only us and is not shown to any player.

The application contains ads and an optional, paid subscription. In the event that a child uses the application, acceptance of these terms and every purchase made are deemed to have been made by the child's parent or legal representative. In order to prevent unwanted purchases, we recommend that you use the device's parental controls / purchase approval settings.

13. Changes to these terms

These terms may be updated from time to time. When an update is made, the "Last updated" date on this page changes. Your continuing to use the application after the change means that you accept the updated terms.

If there is a change in the price or the scope of the subscription, that change is applied within the framework of the store's rules and, where necessary, with your consent obtained.

14. Governing law and competent court

The laws of Türkiye apply to these terms and to the use of the service. In disputes that may arise from these terms, the courts and enforcement offices of Türkiye are competent.

If you are acting in the capacity of a consumer, your right to apply to the consumer arbitration committees and consumer courts in your location is reserved.

15. Contact

For all your questions about these terms or the application:

uğurcan güden [email protected]

Last updated: 18 September 2026