Rozum — Vocabulary Builder

LiveRocketHen4 apps · 90.5K installsEducationFree · contains adsIn-app purchases: $1.99 - $69.99 per itemcom.rockethen.vocab

Learn languages, expand vocabulary and practice speaking with AI tutor

Alert me★ WatchOpen in Play ↗
Total installs
37,747
exact · Play shows 10,000+
Installs / day
0
7-day avg · last day 0
Rating
4.5★
551 ratings · 13 reviews
Released
28 Jan 2025
1.7y ago
Last update
12 Jan 2026
v1.6.1 · 9mo ago
Countries
—
not checked yet

Installs per day

gain of the exact counter
025507511 Oct12 Oct

Lifetime avg ≈ 61/day (all installs ÷ days since release)

Daily tracking since 10 Oct 2026 · history grows every day

Install history

exact counter from Google Play
37.5K37.6K37.7K37.8K37.9K38.0K10 Oct11 Oct12 Oct
010K20K30K40K28 Jan 202510 Oct 202612 Oct 2026

Dashed: estimate from the release date (no daily data before 10 Oct 2026) · time axis compressed before that day

Daily tracking since 10 Oct 2026 · history grows every day

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Manifest analysis reads only the required APK ranges. Base APK downloads may need separate device splits to install.

Data safety

declared by the developer on Google Play
  • No data shared with third parties
  • No data collected
  • Data is encrypted in transit
  • You can ask for your data to be deleted

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

16 in 4 groups
5 Sensitive5 Notable6 Routine

What this app can do with your phone

  • Record sound using your phone's microphone
  • Read photos, videos, and other files saved in your phone's shared storage
  • Add, change or delete photos, videos and other files in your phone's storage
Photos/Media/FilesSensitive2

Access to photos, videos, music and other files stored on your device

  • Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
  • Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE
StorageSensitive2

Access to files, photos and media saved on your phone's storage

  • Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
  • Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE
MicrophoneSensitive1

Access to your phone's microphone to record sound

  • Record sound using your phone's microphonerecord audio · RECORD_AUDIO
OtherNotable11

Access to miscellaneous device features that don't fit other categories

  • See Bluetooth settings and connect to paired devices like headphones, speakers or watchespair with Bluetooth devices · BLUETOOTH
  • Turn Bluetooth on or off and find and pair with nearby Bluetooth devicesaccess Bluetooth settings · BLUETOOTH_ADMIN
  • Change volume and choose which speaker or headset plays soundchange your audio settings · MODIFY_AUDIO_SETTINGS
  • Start itself automatically as soon as your phone finishes turning onrun at startup · RECEIVE_BOOT_COMPLETED
  • Keep your phone's processor or screen from going to sleep, which can use more batteryprevent device from sleeping · WAKE_LOCK
  • Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
  • Connect to the internet to load content and send datafull network access · INTERNET
  • Make your phone vibratecontrol vibration · VIBRATE
  • Check with Google Play that you got this app legitimatelyGoogle Play license check · com.android.vending.CHECK_LICENSE
  • Read Google service settings stored on your deviceread Google service configuration · com.google.android.providers.gsf.permission.READ_GSERVICES
  • Receive push messages sent from the app's servers over the internetreceive data from Internet · com.google.android.c2dm.permission.RECEIVE

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Full description
Rozum — Learn Languages Faster with Smart AI Vocabulary Practice Rozum is an AI-powered language learning app designed to help you study new languages more effectively through daily vocabulary practice, speaking exercises, and real-life examples. With short structured sessions, you can expand vocabulary, improve fluency, and build confident communication skills — including in English. Learn languages step by step with Linoo, your personal AI tutor. Through interactive speaking practice, real conversation phrases, and guided feedback, vocabulary builder helps you develop natural pronunciation and practical language skills. Whether you're improving English or other languages for exams, work, or travel, Rozum supports consistent progress. Why choose Rozum? Vocabulary Builder — Learn practical words and expressions from 150+ curated Word Stacks used in everyday communication across multiple languages, including English, Spanish, French, German, Ukrainian, Polish, Turkish, Arabic, Chinese, Japanese, Korean, and Vietnamese. AI speaking practice — Train real conversations with instant feedback on pronunciation and clarity. Spaced Repetition system — Strengthen long-term memory with a proven learning method used in modern language study apps. Unlimited practice — Expand vocabulary with thousands of words and phrases at your own pace with short micro-learning sessions. Offline mode — Study languages anytime, even without internet access. Expand vocabulary in 26 categories — Build language skills for travel, business, daily communication, and exam preparation. Why Rozum improves language learning effectively A strong vocabulary boosts reading, listening, writing, and speaking skills in any language. Rozum teaches words in meaningful context, helping you understand grammar patterns, remember phrases naturally, and develop real communication fluency. Daily practice with Linoo reinforces pronunciation, review cycles, and confidence in real conversations — especially for English learners and multilingual users. Who is Rozum for? Rozum is built for anyone who wants to learn languages faster and stay motivated: Students & exam takers — Prepare for IELTS, TOEFL, GRE, GMAT, SAT, ACT, and other language exams with smart vocabulary builder and study tools. Professionals — Improve business communication skills and interview confidence in English and other languages. Travelers — Learn essential phrases for real-world situations. All learners — From beginners to advanced users improving fluency, vocabulary, and confidence. Whether you're looking for a vocabulary builder, an AI tutor, or a simple way to practice languages daily — especially English — Rozum offers a complete system for vocabulary growth, speaking improvement, and long-term language development. Start expanding your vocabulary with AI today. Download Rozum and build your language skills every day.

What's new

• Added multi-language support • Improved performance and stability • Completely redesigned real-time conversation experience

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