# Rally English > AI-identifies grammar weaknesses, English vocabulary that comes back before you forget it. Even games and academy assignments. Canonical page: [https://chrome-stats.com/d/com.sysflow.rally](https://chrome-stats.com/d/com.sysflow.rally) ## Overview - **ID:** `com.sysflow.rally` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** SYSFLOW Co., Ltd. - **Category:** EDUCATION - **Downloads:** 3,526 - **Version:** 1.5.4 - **Last updated:** 2026-10-12 - **First published:** 2026-06-25 - **Publisher country:** KR - **Size:** 66 MB - **Data as of:** 2026-10-19 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.sysflow.rally) - **Website:** [https://sys-flow.com](https://sys-flow.com/) - **Privacy policy:** [https://www.rallyenglish.com/policy](https://www.rallyenglish.com/policy) ## Description English study where you know why you got things wrong, Rally English.

AI identifies your grammar weaknesses, and words reappear before you forget them. Start immediately without signing up.

**Rally English** ■ English Grammar

- Over 50,000 questions and approximately 170 units (Starter–Advanced) for middle and high school internal exams and the CSAT

- Course: Review concepts and solve problems in recommended order; move on to the next unit upon passing

- Workbooks: Select and solve only the units you want

- Rally AI: Identify weak concepts from incorrect answers and generate personalized quizzes

- AI grading of written answers and automatic organization of error notes

■ English Vocabulary

- Recommend vocabulary books tailored to you using the 30-second level check feature

- 23 vocabulary books with over 11,000 words (A1–C2, TOEIC/TOEFL)

- 20 words per day for daily learning; repetitive review with intervals where you are asked again just as you are about to forget

- Create your own vocabulary lists and test papers

■ Games and My Sky

- 4 types of games and rankings: Acid Rain, Listen and Choose, Spelling Puzzle, and Sentence Arrangement

- Stars accumulate as you solve problems, and your own planet is born

■ English Academy/School Teams

- Students join via invitation code; small groups (classes) Management

- Assignment creation and automatic grading, AI learning comments

- Students requiring attention and today's activities at a glance

Learning reports · Dark mode · 16 languages ​​· Use the same account on the web ## Rankings - #820,838 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.ACCESS_WIFI_STATE` - `android.permission.INTERNET` - `android.permission.MODIFY_AUDIO_SETTINGS` - `android.permission.POST_NOTIFICATIONS` - `android.permission.READ_APP_BADGE` - `android.permission.READ_EXTERNAL_STORAGE` - `android.permission.READ_MEDIA_VISUAL_USER_SELECTED` - `android.permission.RECEIVE_BOOT_COMPLETED` - `android.permission.RECORD_AUDIO` - `android.permission.SYSTEM_ALERT_WINDOW` - `android.permission.USE_BIOMETRIC` - `android.permission.USE_FINGERPRINT` - `android.permission.VIBRATE` - `android.permission.WAKE_LOCK` - `android.permission.WRITE_EXTERNAL_STORAGE` - `com.anddoes.launcher.permission.UPDATE_COUNT` - `com.android.vending.BILLING` - `com.android.vending.CHECK_LICENSE` - `com.google.android.c2dm.permission.RECEIVE` - `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE` - `com.google.android.gms.permission.AD_ID` - `com.htc.launcher.permission.READ_SETTINGS` - `com.htc.launcher.permission.UPDATE_SHORTCUT` - `com.huawei.android.launcher.permission.CHANGE_BADGE` - `com.huawei.android.launcher.permission.READ_SETTINGS` - `com.huawei.android.launcher.permission.WRITE_SETTINGS` - `com.majeur.launcher.permission.UPDATE_BADGE` - `com.oppo.launcher.permission.READ_SETTINGS` - `com.oppo.launcher.permission.WRITE_SETTINGS` - `com.sec.android.provider.badge.permission.READ` - `com.sec.android.provider.badge.permission.WRITE` - `com.sonyericsson.home.permission.BROADCAST_BADGE` - `com.sonymobile.home.permission.PROVIDER_INSERT_BADGE` - `com.sysflow.rally.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `me.everything.badger.permission.BADGE_COUNT_READ` - `me.everything.badger.permission.BADGE_COUNT_WRITE` ## Similar extensions and apps - [AI Grammar Coach](https://chrome-stats.com/d/com.aigrammarcoach.kxmpzq) — 101 users - [Grammar Scout](https://chrome-stats.com/d/com.grammarscout.app) — 28 users - [Learn English Grammar](https://chrome-stats.com/d/com.yeamuddin99.Google) — 10 users - [English Grammar Practice](https://chrome-stats.com/d/com.inncshoukhin.banglanewspapers) — 27 users - [English Grammar Test](https://chrome-stats.com/d/com.techytech.englishgrammartest) — 8 users - [English Grammar Test Quiz](https://chrome-stats.com/d/com.englishgrammar.skillapp) — 7 users - [English Grammar - AI Tutor](https://chrome-stats.com/d/com.vietdev.english.practice.grammar.test) — 6,231,937 users, 4.74 / 5 - [Learn English: SnapQuiz AI.](https://chrome-stats.com/d/com.hamza.snapQuizAI) — 7 users - [English Language Course](https://chrome-stats.com/d/com.fenls.englishlanguagecourse) — 2,811 users - [Oyun - Learn English with AI](https://chrome-stats.com/d/mn.chandmani.oyun) — 38,968 users, 5.00 / 5 - [English Grammar Expert AI](https://chrome-stats.com/d/com.softedge2u.englishgrammarexpert) — 10,623 users - [English Grammar: Learn & Test](https://chrome-stats.com/d/com.learn.grammarenglish) — 13,580 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.sysflow.rally)