Privacy Policy
Chess Climb: Tactics Trainer
Last updated: November 9, 2026
What stays on your phone
Your puzzle history, rating, theme skills, review schedule and settings are stored in the app's storage on your phone. Apart from the puzzle stats below, they are never sent to us or to anyone else. Your phone's own backups can include them, according to your backup settings: on iPhone, Apple includes this data when you back up to iCloud or a computer; on Android, Google includes it in your Android backup and when you move to a new phone.
Puzzle stats
Chess Climb can share your puzzle results to help pick better puzzles: which puzzle, solved or missed, how long it took, your rating before and after, the app version and the settings that change which puzzles you get. They go with a random ID the app makes, which isn't linked to you. We never get your name, email, contacts, location, device details or IP address.
Your choice. Nothing is shared unless you say yes when the app asks. It asks in the United States, Australia, New Zealand, Japan, Hong Kong, Singapore, the Philippines, Thailand, Pakistan, Switzerland, Ukraine, Canada, Israel, Taiwan, South Korea, Malaysia, India, Brazil, Colombia, Chile and South Africa; in the last ten, only players 18 or older can say yes. Everywhere else, including the European Union and the United Kingdom, the app sends nothing. Settings → Share puzzle stats turns it off at any time. Turning it off deletes everything your phone has sent.
Why, and for how long. We use the results only to improve how the app picks puzzles, rely on your consent, and keep them for two years.
Where. The results are stored with Cloudflare, which runs our server, in North America (Canada and the United States). They travel encrypted. Cloudflare sees your IP address in order to deliver them, but we don't keep it. Nobody else receives them, and we never sell them.
Your rights. You can turn sharing off, which deletes what was sent, or write to sammychess10@gmail.com to ask what we hold, to correct it or to delete it.
日本の利用者の方へ
同意いただいた場合に限り、Chess Climb は、より良いパズルを選ぶために、あなたのパズルの結果（どのパズルか、解けたかどうか、かかった時間、前後のレーティング、アプリのバージョンと出題に関わる設定）を、アプリが作るランダムな ID とともに、開発者のサーバー（Cloudflare、北米）へ暗号化して送信します。お名前、連絡先、位置情報、端末の情報、IP アドレスは受け取りません。データは 2 年間保存し、第三者には提供しません。「設定」→「Share puzzle stats」でいつでも止められ、止めると送信済みのデータは削除されます。お問い合わせ：sammychess10@gmail.com
สำหรับผู้ใช้ในประเทศไทย
หากคุณตกลง Chess Climb จะส่งผลการแก้โจทย์ของคุณ (โจทย์ใด แก้ได้หรือไม่ ใช้เวลาเท่าใด เรตติ้งก่อนและหลัง เวอร์ชันของแอป และการตั้งค่าที่มีผลต่อโจทย์ที่ได้รับ) พร้อมรหัสสุ่มที่แอปสร้างขึ้น ไปยังเซิร์ฟเวอร์ของผู้พัฒนาบน Cloudflare ในอเมริกาเหนือ เพื่อปรับปรุงการเลือกโจทย์ โดยอาศัยความยินยอมของคุณ เราไม่ได้รับชื่อ ข้อมูลติดต่อ ตำแหน่ง ข้อมูลอุปกรณ์ หรือที่อยู่ IP ของคุณ และไม่เปิดเผยข้อมูลให้ผู้อื่น ข้อมูลจะถูกเก็บไว้ 2 ปี คุณปิดได้ทุกเมื่อที่ การตั้งค่า → Share puzzle stats ซึ่งจะลบข้อมูลที่ส่งไปแล้ว และขอเข้าถึง แก้ไข หรือลบข้อมูลได้ที่ sammychess10@gmail.com
What else
Nothing. Chess Climb has no accounts, no advertising, no tracking, and no third-party code that collects data.
The website
Today's climb on playchessclimb.com runs in your browser. It keeps the day's progress, and whether sound is on, in your browser's storage on your device, and sends nothing to us. The site has no accounts, cookies, advertising or analytics. GitHub, which hosts it, logs visitors' IP addresses for security under its own privacy policy; we don't receive them.
Crash reports and testing
On iPhone, if you turn on Share With App Developers in your iPhone's Analytics settings, or you test Chess Climb through TestFlight, Apple may share crash reports and usage statistics with us, along with any feedback you send through TestFlight.
On Android, if your phone shares usage and diagnostics data with Google, Google Play may share crash reports with us. Feedback you send while testing Chess Climb through Google Play also comes to us.
Apple and Google handle this data under their own privacy policies. We use it only to fix problems.
The chess engine
When you tap Engine after a puzzle, the Arasan chess engine analyzes the position on your phone. Nothing is sent anywhere.
Exporting your history
You can export your puzzle history as a CSV file from Settings. The file goes only where you choose to send it.
Deleting your data
In Settings, turn off Share puzzle stats to delete everything your phone has sent, or tap Reset all progress to delete your progress on the phone. Deleting the app deletes everything on your phone; puzzle stats it already sent stay, linked to nothing that identifies you, until they are deleted after two years, so turn sharing off first if you want them gone at once.
Children
Puzzle stats identify no one, children included. In the ten countries above where a child's yes needs a parent, only players 18 or older can say yes.
Changes
If this policy changes, we will update this page and the date above.