--- title: "KU ZJ - Reviews, Revenue and Downloads in Estonia | Apple App Store" description: "Dear App Review Team, Thank you for reviewing our app and for your feedback. Please find the requested information below: 1. Screen Recording The requested screen recording has been attached to th" --- # KU ZJ — Estonia > English Flashcards and Grammar ![KU ZJ App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/e8/bd/7d/e8bd7d31-511b-1385-3151-59bbaed35b11/AppIcon-0-0-1x_U007emarketing-0-11-0-85-220.png/434x0w.png) **Developer:** [Thi Thanh Ngan Huynh](https://apptail.io/developer/thi-thanh-ngan-huynh-QKdiuc) **Category:** Utilities **Rating:** N/A (0 ratings) **Price:** Free **Bundle ID:** com.dlzogn.cookdler **Store:** Apple App Store **Country:** Estonia **Version:** 1.0 (released 2026-06-30) **Original Release:** 2026-06-30 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/ee/app/app/id6784339749) **AppTail Page:** [https://apptail.io/app/ku-zj-yvQA/estonia](https://apptail.io/app/ku-zj-yvQA/estonia) ## KU ZJ Description Dear App Review Team, Thank you for reviewing our app and for your feedback. Please find the requested information below: 1. Screen Recording The requested screen recording has been attached to this submission. The recording was captured on a physical device and starts from launching the app. It demonstrates the typical user flow and the app’s core functionality. 2. Tested Device and Operating System The app was tested on the following physical device before submission: * Device: iPhone 13 * iOS Version: 26.5 3. App Purpose and Target Audience KU ZJ is a simple English learning app designed to help users study vocabulary, review basic grammar, and practice irregular verbs in a clean and focused way. The app is intended for students, beginners, and general users who want to improve their English vocabulary and grammar through quick daily practice. The app provides flashcards, vocabulary review, pronunciation support, grammar summaries, irregular verb tables, search, and favorite words for later review. 4. Setup and Access Instructions No account registration or login is required. All main features are available immediately after launching the app. No special configuration, login credentials, internet connection, purchase, subscription, or sample files are required. To access the app’s main features: * Launch the app * Open the vocabulary or flashcard section * Tap cards to review word meanings * Use pronunciation to listen to words * Browse or search vocabulary * Save favorite words for later review * Open the grammar section to review common grammar tenses * Open the irregular verbs section to study base, past, and past participle verb forms 5. External Services, Tools, or Platforms The app does not use external services, authentication services, payment processors, AI services, data providers, or third-party platforms to deliver its core functionality. The app works offline and does not require users to sign in. 6. Regional Differences There are no regional differences in the app’s features or content. The app functions consistently across all supported regions. 7. Regulated Industry / Protected Third-Party Material The app does not operate in a highly regulated industry. The app does not provide financial, medical, legal, gambling, or other regulated services. The app does not include protected third-party material that requires special authorization. Additional Information The app does not include In-App Purchases, subscriptions, paid content, user-generated content, account registration, login, or account deletion flows. The app does not request access to sensitive device permissions such as Camera, Photos, Contacts, Microphone, or Location. Please let us know if any additional information is required. Thank you for your time and consideration. Best regards, ## KU ZJ Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/45/3d/f1/453df18f-d769-3740-72a6-2401d14c8a5d/simulator_screenshot_35EA7AFF-5462-4960-A287-788E65D148D4.png/2048x2732.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/16/97/18/169718fb-286d-c237-d21f-1bcf0654db87/simulator_screenshot_DC6924D8-6E59-45A8-A22E-09B4012C1F1A.png/2048x2732.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/d5/c1/3d/d5c13de3-ee3a-b91c-b727-720792bdd348/simulator_screenshot_9108BF24-07D7-4B0E-8060-B2FA3F147768.png/2048x2732.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/dc/9b/ce/dc9bce92-0694-09da-5804-74d9facf9341/simulator_screenshot_A9A4083B-A487-4484-8882-88DC2723E8DB.png/2048x2732.png) ## Apps Similar to KU ZJ - [iSpeed - Internet Speed Test](https://apptail.io/app/ispeed-internet-speed-test-ywPb/estonia) - [VMP Authenticator App](https://apptail.io/app/vmp-authenticator-app-CBGd/estonia) - [SketchBlend AI Imagery](https://apptail.io/app/sketchblend-ai-imagery-IYnn/estonia) - [AI Notes – Speech to Summary](https://apptail.io/app/ai-notes-speech-to-summary-Ieax/estonia) - [GPTZero: Twain Humanizer AI](https://apptail.io/app/gptzero-twain-humanizer-ai-KFKy/estonia) - [UCODE: SMS Verification Code](https://apptail.io/app/ucode-sms-verification-code-eyqz/estonia) - [ОLG - in Moment](https://apptail.io/app/olg-in-moment-zIIz/estonia) - [Clean up iPhone .](https://apptail.io/app/clean-up-iphone-kTOz/estonia) - [Set Up Smart Speaker](https://apptail.io/app/set-up-smart-speaker-YSnA/estonia) - [Instant Set Up & Smart Connect](https://apptail.io/app/instant-set-up-smart-connect-zPAA/estonia) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. 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