🌸 Indie app studio for everyday learning

We craft beautiful learning apps

Sakura App Studio designs calm, focused learning apps — from JLPT and TOPIK language journeys to AI-powered exam prep and life-sciences mastery. Beautiful design, gamified habits, and privacy by default.

Explore our apps Meet the flagship
4learning apps
AIpowered learning
Offlinefriendly & private
📚 Today's Answers
Q. Explain photosynthesis
Q. Define momentum
+
More from us

Explore our apps

We build calm, beautiful apps that make learning a daily habit.

On Google Play

Nihongo Journey

Complete JLPT prep for Japanese learners (N5–N1) in one gamified app.

  • Kana & kanji with stroke guidance
  • Grammar lessons, quizzes & mock tests
  • Spaced-repetition review, streaks & XP
Get on Google Play Learn more →
On Google Play

Korean Journey

Learn Korean from zero to TOPIK II — a gamified, offline-friendly path for K-culture fans and travellers.

  • Hangul mastery from scratch
  • Pronunciation practice & adaptive difficulty
  • Spaced-repetition review, streaks & XP
Get on Google Play Learn more →
Coming soon

Helixia

AI-powered Life Sciences & Biotechnology learning — MCQ practice, lab practicals, smart notes, research tools, and a built-in AI assistant.

  • 10000+ MCQs with detailed explanations
  • Premium lab practicals & smart notes
  • Entrance prep: CSIR-NET, GATE BT, DBT-BET & more
Notify me Learn more →
Our flagship

AnswerNotebook AI

Your AI-powered study companion. Turn question papers and notes into exam-ready answers.

  • OCR question scanning
  • AI-written, marks-ready answers
  • Smart notebooks & one-tap PDF export
🚀 Coming soon to Android Get notified Learn more →
0
Learning apps
0
JLPT levels (N5–N1)
0
Korean practice games
0
Life-science MCQs
Why our apps

Learning that feels calm, not cluttered

Every Sakura app is built on the same principles — beautiful, focused, and made to keep you coming back.

🎨

Calm, premium design

Thoughtful, distraction-free interfaces that make studying feel inviting instead of stressful.

🎮

Gamified & habit-forming

Streaks, XP, levels, and daily goals turn consistent learning into a rewarding daily ritual.

📴

Offline-friendly

Core learning works without a connection, so you can keep going anywhere — even on a commute.

🔒

Private by design

Secure accounts, per-user data isolation, and in-app data deletion. Your progress stays yours.

Everything you need to learn — beautifully crafted

🈳 JLPT N5–N1 🇰🇷 TOPIK I & II 🧬 Life Sciences MCQs 🔬 Lab practicals 📷 OCR question scanning 🤖 AI answers & assistant 🔁 Spaced repetition 🔥 Streaks & XP 📴 Offline learning 📤 PDF export
Our flagship · AnswerNotebook AI

Your whole study workflow, in one app

From a blurry photo of a question paper to a polished, exportable answer sheet — AnswerNotebook AI handles the heavy lifting.

📷

Snap & Upload

Photograph or upload any question paper. Built-in OCR extracts every question accurately, even from handwriting.

🤖

AI-Written Answers

Generate clear, structured, exam-oriented answers tuned to the marks and depth your syllabus expects.

📒

Smart Notebooks

Auto-organise answers into subject notebooks. Edit, highlight, and keep everything searchable in one place.

📊

PYQ Analytics

Spot repeating previous-year questions and high-weight topics so you revise what actually matters.

📤

One-Tap PDF Export

Turn any notebook into a clean, printable PDF answer sheet to revise offline or share with classmates.

🎨

Premium Themes

Study your way with Sakura, Midnight Scholar, and Ocean Glass themes — calm, focused, and easy on the eyes.

How it works

Three steps to a complete answer sheet

1

Upload

Add a question paper or your notes from camera, gallery, or files.

2

Generate

AnswerNotebook AI reads the questions and writes structured answers instantly.

3

Export

Export a polished PDF answer sheet and keep it neatly organized in your notebooks — so you save time instead of digging through files and chat history later.

Start studying smarter today

AnswerNotebook AI is launching soon on Android. Be the first to know when it goes live.

Coming soon toGoogle Play

Want early access? Email sakura.appstudio@gmail.com

FAQ

Questions, answered

Which apps are available right now?

Nihongo Journey is live on Google Play. Korean Journey and Helixia are in closed testing and launching soon, and our flagship AnswerNotebook AI is coming next. Tap any app card above to see full details.

Are your apps free to use?

Every app is free to get started. Premium subscriptions unlock advanced features, higher limits, and the full content library — at an affordable price.

Do the apps work offline?

Yes. Core learning — lessons, practice, and review — is built to work offline, so you can keep studying on a commute or anywhere without a connection.

How is my data handled?

Your data is tied to your account, protected by secure per-user rules, and never sold. You can request account and data deletion at any time from within each app.

Is AnswerNotebook AI free?

You can get started for free. Premium features and higher answer limits are available through an affordable subscription.

What subjects does it support?

It works across most academic subjects — sciences, humanities, commerce, and more. The AI adapts answers to the question type and marks.

Can it read handwritten papers?

Yes. The built-in OCR is tuned to extract questions from printed and handwritten papers, then lets you correct anything before generating answers.

Is my data private?

Your notebooks and uploads are tied to your account and protected by secure access rules. You can request account and data deletion anytime.