The only JLPT N5 app with deep Bengali (বাংলা) explanations — covering Hiragana, Katakana, 100+ Kanji, SRS Flashcards, 25 structured lessons, and offline audio. Built by Biki Akram.
アプリ画面 · Tap any screenshot to view full size
25 lessons, 100+ Kanji, interactive quizzes, and SRS flashcards — all in Bengali.
Full interactive あ–ん and ア–ン charts with Bengali phonetics. Built-in Practice Mode with instant scoring and question tracking.
Every essential N5 Kanji with animated HanziWriter strokes, ON/KUN readings, Bengali meanings, and manual tracing practice.
Spaced Repetition System for Kanji & Vocabulary. Filter by All Lessons or SRS-only. 98 characters available with audio playback.
Grammar points like は〜です, じゃありません, か-questions with clear Bengali explanations, examples, and per-lesson quiz practice.
High-quality Japanese Text-to-Speech built right in. Hear any word, Kanji, or sentence — no internet connection needed.
Counting, Time, Months, Days, Dates, Jikoshokai (自己紹介), and Skype/Viva mock interview prep — all explained in Bengali.
NihonSync is the only Japanese learning app with deep Bengali (বাংলা) explanations for every vocabulary word, grammar rule, and Kanji character — built specifically for native Bengali speakers preparing for JLPT N5.
Install NihonSync on any Android phone in under a minute.
Go to Settings → Security and enable "Install from Unknown Sources" — your browser may also prompt you automatically.
Tap the Download button below. The NihonSync APK file will download directly to your device — no account or sign-up needed.
Open the downloaded file, tap Install, and launch the app. Everything works 100% offline from the very first launch.
Free to download. Works completely offline. No account required. Built for Bengali speakers.
Yes, 100% free to download and use. No in-app purchases, no subscription, no hidden fees. The site shows ads to support development — the app itself is completely ad-free.
No. NihonSync is offline-first. Once installed, all features — including audio (TTS), flashcards, quizzes, and lessons — work completely without internet.
NihonSync requires Android 5.0 (API Level 24) or above. This covers virtually all Android phones manufactured after 2016.
Yes. The APK is developed and signed by Biki Akram (ビキ先生). You'll need to temporarily allow your browser or device to install apps from unknown sources — this is standard for apps distributed outside the Play Store.
Absolutely! NihonSync is designed for complete beginners. Start with Hiragana, then move to Katakana, then vocabulary and grammar — the app guides you step by step in Bengali.
Yes. The app covers all Hiragana, Katakana, 100+ N5 Kanji with stroke order, 25 vocabulary & grammar lessons, quizzes, and Jikoshokai (self-introduction) — everything required for JLPT N5 and mock Skype/Viva interviews.
Big things are in development. Here's a preview of the upcoming versions and new apps from ビキ先生 Studio.
The next major update to NihonSync takes you to the N4 level — a giant leap in your Japanese journey. All three core modules will be expanded with full N4 content, built in the same Bengali-medium style you love.
A brand-new companion app dedicated to the JLPT N5 Listening module — the most underserved skill for Bengali learners. Practice real listening scenarios and have live conversations with AI or fellow aspirants.
Want to be notified when these launch?
📬 Get NotifiedI'm Biki Akram — a Japanese language student, educator, developer, and the person behind ビキ先生 (Biki Sensei) Studio. I've been passionate Japanese language learning and frustrated by how hard it is for Bengali speakers to find quality resources in their mother tongue.
That frustration became NihonSync — a complete, offline, Bengali-medium JLPT N5 app that I wish had existed when I started learning Japanese. Every explanation is in Bengali, every lesson is carefully structured, and the entire thing is free.
"My mission is simple: make Japanese language learning truly accessible to every Bengali speaker — whether they're in Bangladesh or anywhere in the world."
I'm currently developing NihonSync v2 for JLPT N4, and a brand-new NihonSync Listen app focused on listening comprehension and real-time conversation practice.
Effective Date: May 10, 2025 · ビキ先生 Studio · Biki Akram
NihonSync is an offline-first Android app. We do not collect, store, or share your personal data. Your privacy is our default.
"We are committed to protecting your privacy. Because NihonSync is designed to work fully offline, we have minimized data collection to the absolute essentials."
All your learning data — flashcard progress, quiz results, and settings — is stored locally on your device only. This data never leaves your phone and is not accessible to us or any third party. "We use third-party advertising services (including Adsterra) to serve ads on our website. These services may use cookies to personalize ads."
Last Updated: May 10, 2025 · ビキ先生 Studio · Biki Akram
By downloading or using NihonSync, you agree to these terms. It's a free app — please use it fairly and respect the developer's work.
"NihonSync is provided as a free educational tool. Use it as a supplementary study resource alongside official JLPT preparation materials."
All content within NihonSync — including text, graphics, lesson materials, kanji explanations, and Bengali-language translations — is the intellectual property of Biki Akram / ビキ先生 Studio. The specific compilation, explanation, and translation of Japanese language content in Bengali is protected under copyright.
Questions, feedback, bug reports, or collaboration inquiries — we read every message. Whether you have a question about the app, want to report a bug, have feedback on the content, or just want to say hello — I'd love to hear from you.
You can reach the studio through WhatsApp, Facebook, Instagram, Twitter/X, or GitHub. We typically respond within 2–3 business days. You can also use the contact form to request notification when NihonSync v2 (N4) or NihonSync Listen launches.
"Let's talk Japanese 🎌 — making language learning accessible to every Bengali speaker, one conversation at a time."
ビキ先生 Language Studio is an independent language education studio from Bangladesh, building Japanese learning tools specifically for Bengali speakers. Every message helps us improve and serve the community better.
ビキ先生 (Biki Sensei) Studio is an independent language education studio founded by Biki Akram — a developer and Japanese language enthusiast from Bangladesh. The studio was born from a simple frustration: there are almost no quality Japanese language learning resources in Bengali.
For Bengali speakers in Bangladesh and West Bengal who dream of working in Japan or passing the JLPT, the barrier is enormous. English-medium resources are everywhere, but learning Japanese through a third language makes an already difficult journey even harder.
"Language education should be in your language. Why learn Japanese through English when you can learn it through Bengali?"
We are on a mission to make Japanese language learning genuinely accessible to the 300+ million Bengali speakers around the world. Our apps are free forever, offline-first, Bengali-medium, and JLPT-aligned.
