For the free-download edition of NightGlass with its optional Lantern Trail unlock.
Updated: October 25, 2026. Applies to NightGlass 1.0.0, including Lantern Trail and Three Towers.
Responsible developer: Cognetra Labs. Privacy contact: zhaojianrui001@gmail.com.
In the game
NightGlass does not require an account. Gameplay works offline. The game does not send personal data or progress to a developer server, sell personal data, create advertising profiles or track you across apps. It contains no advertising or developer analytics SDK. Levels 21–100 can be unlocked through one non-consumable in-app purchase from Apple.
Progress, stars, discoveries and audio, haptic, motion and language preferences are stored on your device. There is no developer-operated cloud synchronization. Apple device backups, if enabled, are governed by Apple and your settings. Removing the app can remove its local data.
The app reads the App Store storefront country, when Apple makes it available, to choose a default interface language. It uses the device region as a fallback. This region is used within the app and is not sent to the developer. You can choose English or Traditional Chinese manually in Settings. The app does not request precise location or GPS access.
Files, images and permissions
Three Towers journey progress can be exported to a file and imported manually. This export does not include Lantern Trail progress or stars. Keep exported files secure. The game has no manual export facility for Lantern Trail progress; do not delete the app if you need to retain those stars.
Share cards are created on your device. Only your chosen system share or save action transfers the image to Photos, Files or another service. Saving to Photos may request permission to add an image; the game does not read your photo library. Denying that permission does not prevent gameplay. Manage access in iOS Settings. Other apps and services handle any image you share under their own policies.
Apple and support
Apple handles App Store purchases, downloads, updates and restoration. The app verifies transaction and entitlement information provided by Apple on your device to determine access to paid chapters; it does not send transactions or progress to a developer server. The developer does not receive your payment-card details through the game. Apple's storefront, purchase and system services may communicate with Apple under its own policies; free levels work offline. Offline access to paid levels depends on existing purchase information the app can verify on your device. Buying and restoring require a connection to Apple.
If you voluntarily contact support, the developer receives your email address and the content you send. These are used to respond to your request, not for advertising. Please do not send passwords, full payment details or unrelated personal information. Support correspondence is retained only as needed to resolve the request and meet applicable obligations. You may contact the developer about access, correction or deletion, subject to any required retention.
This website
This website’s policy and support pages contain no analytics scripts, embedded third-party fonts, tracking pixels or forms. This website is hosted by Cloudflare, which may process IP addresses and network request information to serve and secure it. See Cloudflare’s privacy policy at https://www.cloudflare.com/privacypolicy/ . This is separate from game progress uploads or in-game analytics.
Your choices and changes
You can manage local files, shared images, device backups and permissions in the relevant app or system settings. There is no game account to delete. If data practices change, this policy and the App Store privacy information will be updated; any required permission will be requested before the new processing begins. Your rights under applicable law remain unaffected.
Contact: zhaojianrui001@gmail.com.