StudyStack – Notes & PDFs

LiveNextBillion Labs4 apps · 6.4K installsEducationFreecom.studystack.app

Organize notes, read PDFs, and prepare exams with a simple study app.

Alert me★ WatchOpen in Play ↗
Total installs
776
exact · Play shows 500+
Installs / day
+11
7-day avg · last day +11
Rating
—★
— ratings · — reviews
Released
13 Apr 2026
6mo ago
Last update
22 Aug 2026
v1.1.4 · 2mo ago
Countries
—
not checked yet

Installs per day

gain of the exact counter
0102030405011 Oct13 Oct14 Oct

Lifetime avg ≈ 4/day (all installs ÷ days since release)

Daily tracking since 10 Oct 2026 · history grows every day

Install history

exact counter from Google Play
72073074075076077078010 Oct12 Oct14 Oct
020040060080013 Apr10 Oct14 Oct

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
  • Collects data Personal info, Files and docs and 3 others
  • 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

9 in 3 groups
4 Sensitive1 Notable4 Routine

What this app can do with your phone

  • 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
OtherNotable5

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

  • 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
  • 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

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
StudyStack – Notes, PDFs & Study Materials Study Smarter. Stay Organized. Learn Better. StudyStack is a simple, fast, and reliable study companion that helps students, teachers, and educational institutions organize notes, PDF files, assignments, study materials, lecture notes, and educational resources in one place. Whether you're preparing for school exams, college semesters, university courses, or competitive exams, StudyStack makes it easy to keep all your learning materials organized and accessible whenever you need them. Instead of searching through WhatsApp chats, Telegram groups, emails, cloud storage, or multiple folders, StudyStack lets you organize everything by institution, course, semester, subject, and topic, making studying more productive and stress-free. Why Choose StudyStack? StudyStack is designed with simplicity in mind. The clean interface, smooth performance, and organized structure help students spend less time searching for notes and more time learning. Whether you're studying at home, attending online classes, preparing for exams, or revising important topics, StudyStack keeps your educational content available in one convenient place. The app is lightweight, easy to use, and optimized for Android devices. Key Features • Organize notes by subject • Read PDF files easily • Download study materials • Store lecture notes • Manage assignments • Semester-wise organization • Course-wise management • Subject-wise folders • Fast PDF reader • Clean and modern interface • Lightweight design • Smooth performance • Low storage usage • Easy navigation • Student-friendly experience • Reliable performance Organize Your Learning Keep all your educational resources together. Store and access: • Class Notes • Lecture Notes • PDF Notes • Assignments • Study Materials • Previous Year Question Papers • Question Banks • Handwritten Notes • Revision Notes • eBooks • Practical Files • Lab Manuals • Reference Documents • Course PDFs Everything stays organized, making it easier to prepare for exams and revise important topics. Perfect For • School Students • College Students • University Students • Engineering Students • Medical Students • BCA Students • MCA Students • MBA Students • Teachers • Coaching Institutes • Online Learning • Competitive Exam Aspirants • UPSC • SSC • Banking • Railway • GATE • CAT • JEE • NEET Anyone looking for a simple notes and PDF study app. Smart Organization StudyStack allows educational content to be organized in a structured way: Institution Course Semester Subject Topic Files This makes finding notes, assignments, PDFs, and study resources quick and effortless. Fast PDF Reading Open and read PDF files without unnecessary distractions. Whether you're reviewing lecture notes, textbooks, assignments, or revision guides, StudyStack provides a smooth and comfortable reading experience. Lightweight & Fast StudyStack is optimized for speed and reliability. The app launches quickly, uses minimal storage, and runs smoothly even on budget Android devices. Its lightweight design helps reduce battery usage while delivering excellent performance. Benefits • Save time searching for notes • Keep all study materials in one place • Improve study organization • Prepare for exams more efficiently • Stay focused while learning • Build better study habits • Increase productivity • Access learning resources quickly Continuous Improvements StudyStack is continuously updated with performance improvements, bug fixes, and new features based on user feedback. Our goal is to provide students with a modern, reliable, and easy-to-use study platform that supports learning every day.

What's new

- PDF order fixed: Study materials and PDFs now correctly display in chronological order (oldest to newest) for both students and teachers. - Better PDF Management: Teachers can now easily rename their uploaded PDFs with a brand new, clean interface. - UI Improvements: Upgraded the 'Upload PDF' button design for a smoother and more professional experience. - Updated our Help & Tutorial videos for better guidance.

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