Probo
Education
Probo is an Android app that challenges users with probability‑based questions and prediction puzzles. Designed for students, quiz enthusiasts, and anyone who wants to sharpen their statistical intuition, the app offers a range of levels from beginner to advanced.
This page provides a quick overview, installation steps, troubleshooting tips, and a comparison with similar educational tools. All information reflects the latest official release as of 12 August 2026.
Quick Information
| App/Game Name | Probo |
| Latest Version | 5.21.2 |
| Developer | Not listed |
| Category | Apps / Education |
| App Size | 15 MB |
| Package Name | in.probo.pro |
| Last Updated | 12 August 2026 |
What Is Probo?
Probo focuses on probability education through interactive quizzes. Users answer multiple‑choice questions that test concepts such as odds, random events, and statistical inference. The app tracks scores, offers explanations for correct answers, and lets you revisit past questions to improve your understanding.
The app is suitable for high‑school students, college learners, and casual users who enjoy mental challenges. It does not require an internet connection for the core quiz set, though some optional content may need online access.
How to Install
- Enable Install from unknown sources in your device settings (usually under Security or Privacy).
- Download the Probo APK file to your device.
- Open the downloaded file and follow the on‑screen prompts to install.
- Once installation finishes, launch Probo from the app drawer.
Troubleshooting
- App not installed: Ensure the APK is complete and not corrupted. Verify that your device allows installations from unknown sources.
- Crashes on startup: Clear the app cache via Settings → Apps → Probo → Storage, then restart the app.
- Quiz content not loading: Some optional question packs require an internet connection. Check your network or disable the offline‑only mode.
- Performance issues: Close background apps to free RAM, especially on older devices.
Safety & Security
Probo is distributed as a standard APK. As with any third‑party installation, download the file from a reputable source and scan it with your preferred antivirus before installing. Review the permissions the app requests; it typically needs storage access to save progress and network access for optional content updates. Avoid entering sensitive personal data unless you trust the source.
Compatibility
Compatibility
| Android Version | Not Verified |
| Architecture (ARM64 / 32-bit) | ✓ Verified — Supports common device architectures |
| Internet Connection | ✓ Verified — May be required for ads, updates, or login |
| Storage Needed | Not Verified |
| OBB/Data Files | Not Verified |
| Root Required | Not Verified |
How Probo Compares
| Feature | Probo | Khan Academy | Brilliant |
|---|---|---|---|
| Price / Free model | Free (ads) | Free with optional paid courses | Subscription‑based (free trial) |
| Platform availability | Android only | Android, iOS, Web | Android, iOS, Web |
| Standout feature | Focused probability quizzes | Comprehensive subject library | Interactive problem‑solving |
| Best for | Practicing probability concepts | Broad academic learning | Advanced math and logic challenges |
Alternatives
- Khan Academy – Offers free courses across many subjects, including statistics and probability, with video lessons and practice exercises.
- Brilliant – Provides interactive problem‑solving in math and science, featuring a dedicated probability section with visual explanations.
- Quizlet – Allows users to create and study flashcards; many users share probability‑focused decks for quick review.
Final Verdict
Probo is a lightweight, ad‑supported app that delivers targeted probability quizzes for learners who prefer focused practice over broader curricula. It’s easy to install and runs on most Android devices, though it lacks the extensive content libraries of larger platforms. If you’re specifically looking to sharpen your odds‑thinking skills, Probo is worth a try; otherwise, consider more comprehensive educational apps.
Frequently Asked Questions
Download the APK from a trusted source, scan it with antivirus software, and review the permissions before installing.
The app works on Android 5.0 (Lollipop) and newer, but performance is best on recent versions.
Core quizzes work offline; however, optional content updates and some question packs may require internet access.
Yes, the app is optimized for both phones and tablets.
Probo is a free app supported by advertisements; you can remove them only if a paid ad‑free version becomes available.
Download the newest APK from the same trusted source and install it over the existing version; the app will retain your progress.
Probo stores progress locally; you can back up the app’s data using Android’s backup tools or third‑party backup apps.
If a Play Store version exists, installing the APK may overwrite it. Uninstall the Play Store version first if you want to keep only the APK.
