Learn Any Language, Anytime, Anywhere
60+ offline dictionary and utility apps trusted by 10 million users worldwide. No internet required.
Featured Apps
Our most popular apps, loved by millions of users around the world
English Vietnamese Dictionary
64,000+ English-Vietnamese and 40,000+ Vietnamese-English entries. Fast, offline, and completely free.
Turn Off Screen
One-tap screen off. Save battery and extend screen life with the simplest utility. 1M+ users trust it daily.
La Conjugaison
Complete French verb conjugation reference. All tenses, all moods. Perfect for French learners and students.
BMI Calculator - Healthy & Fit
Calculate your Body Mass Index quickly. Clean, simple interface with health category indicators.
Voice Recorder - Memos & Share
High-quality voice recording with easy sharing. Record meetings, lectures, notes, and more.
Turn Off Screen Pro
Advanced screen control with scheduled off times, shake-to-wake, and proximity sensor support.
Dictionary Collection
40+ language pairs, all available offline. Find the dictionary for your language.
European Languages
Asian Languages
Vietnamese Dictionaries
Middle Eastern & African Languages
Indigenous & Rare Languages
More Apps
Tools, entertainment, stories, and more from NDT Studio
PDF Shot
Convert PDF pages to high-quality PNG and JPG images entirely on your device. No internet required.
Poem For Parents
A beautiful collection of Vietnamese poems for parents and children. Strengthen family bonds through poetry.
Vova Story
A collection of humorous Vova jokes and stories. Witty tales that bring comfort and relieve stress.
Folk Funny Story
Vietnamese folk jokes and humorous tales. Traditional humor passed down through generations.
Easiest Uninstaller
Quickly remove unwanted apps and free up storage space. The simplest way to uninstall apps.
Flashlight
Turn your phone into a powerful flashlight with one tap. Simple, bright, and reliable.
Sound Meter
Measure ambient noise levels with your phone. A simple decibel meter for monitoring your environment.
Schedule Airplane Mode
Automatically toggle airplane mode on a schedule. Save battery overnight and reduce distractions.
Why Choose NDT Studio Apps?
Built with care for learners, travelers, and professionals
100% Offline
All dictionaries work without internet. Perfect for travel, remote areas, or saving data.
Free & Ad-Supported
All apps are free to download and use. No hidden costs, no subscriptions.
Fast & Lightweight
Optimized for speed with small app sizes. Instant search results.
Android & iOS
Available on both Google Play and the App Store for all your devices.
40+ Languages
From major world languages to rare indigenous languages. We cover them all.
10M+ Users Trust Us
Over a decade of development. Continuously updated and improved.
Start Learning a New Language Today
Download any of our free dictionary apps and begin your language journey.