Official Android Release

Download StudyOS APK

Get the standalone Android release APK. Completely offline, zero ads, zero accounts, and full cognitive exam intelligence.

Verified SHA-256 Checksum

6ebf52b7a74dea6e78913a55aec75f0b3e6033b6de6c5eadbb103af62b2b7504

Status

Stable Build

Package Size

12.9 MB

Min Android

Android 8.0+

Target Android

Android 15

Installation Guide

Installing on Android (Step-by-Step)

StudyOS is distributed directly as a clean standalone APK without Google Play bloat or account requirements.

01

Download APK File

Tap the download button above or open this page on your Android phone browser (Chrome, Brave, Firefox, etc.) to download StudyOS.apk.

02

Allow Unknown Apps

When prompted by Android, tap Settings and toggle on "Allow from this source" for your browser. This standard Android prompt ensures only apps you intentionally install are run.

03

Tap Install & Launch

Tap Install. Once installed, tap Open to start your first distraction-free study session immediately. No account signup, no credit card, no email required.

Changelog

Release History

Google Docs & Drive Document Previewer (v1.3.1)

Current Stable Production Build

Latest

Native Document Viewer: View PDF, Word (.docx, .doc), Markdown (.md), and Text (.txt) files in authentic Google Docs & Drive style paper canvas layout.
Visual High-DPI PDF Rendering: Native Android PdfRenderer converts PDF pages into sharp zoomable bitmaps with page navigation and thumbnail jumping.
Find in Document (Ctrl+F): Real-time text search highlighting matches and cycling previous/next occurrences with exact match counters.
Eye-Friendly Themes & Typography: Google Docs White, Sepia Warm, Midnight Dark, and Slate Cool themes with dynamic text scaling (12sp–24sp).
Text-to-Speech (TTS) Narration: Built-in audio player that reads aloud any document with play/pause, restart, and position tracking.
1-Click AI Transformations: Convert any document or note into StudyOS Notes, spaced-repetition Flashcards, or AI Practice Quizzes with one tap.

All-In-One Intelligence Release (v1.3.0)

UI Polish & Socratic Audio Walk

v1.3.0

Distraction-Free AI Study Session: 5-step cognitive flow (Learn → Recall → Practice → Evaluate → Complete) with local Room persistence.
Sidebar Study Countdown Timer: Circular animated clock, presets (25m, 45m, 60m, stopwatch), and native AlarmManager background alerts.
Dedicated Mock & Tuition Tests Column: Separate tab filter, subject selector, date, and exact native TimePickerDialog (HH:mm).
Mistake Bank & Taxonomy: 5-category cognitive error classification (Concept, Memory, Calculation, Misread, Careless) with diagnostic remediation.
Exam Readiness Engine: 7-dimension mathematical preparation index.
Smart Dynamic Revision Queue: Urgency priority sorting based on memory decay curves.
Subject Intelligence Badges: Real-time Strong / Weak / Due chapter breakdown.
Global Instant Offline Search: Sub-second query across subjects, notes, cards, and mistakes.

Core Foundation Release

Initial Offline Architecture Build

Foundation

Initial offline Room SQLite database architecture.
Subject and Chapter syllabus tracking.
Basic active recall flashcard system.
Jetpack Compose UI with dark surface design system.