# DataNerd: Data Engineering > Learn data engineering: SQL, cloud & 300 interview questions. 100% offline Canonical page: [https://chrome-stats.com/d/com.mangopickle.datanerd](https://chrome-stats.com/d/com.mangopickle.datanerd) ## Overview - **ID:** `com.mangopickle.datanerd` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** mangopickle - **Category:** EDUCATION - **Downloads:** 37 - **Version:** 1.0.0 - **Last updated:** 2026-08-18 - **First published:** 2026-08-17 - **Publisher country:** IN - **Size:** 26 MB - **Data as of:** 2026-09-16 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.mangopickle.datanerd) - **Privacy policy:** [https://sites.google.com/view/datenerd/home](https://sites.google.com/view/datenerd/home) ## Description DataNerd is a complete, offline-first course for learning data engineering — from the fundamentals all the way to AWS, Azure, GCP, and Databricks, plus 300 real SQL interview questions you can actually run.

📚 A FULL DATA ENGINEERING CURRICULUM
18 modules and 150+ lessons covering everything a working data engineer needs: databases & SQL, data modeling, distributed processing, workflow orchestration, data quality, architecture patterns, security & governance — plus dedicated modules for AWS, Azure, GCP, and Databricks so you can go deep on the cloud platform you actually use.

💻 PRACTICE LIKE A REAL INTERVIEW
Six SQL topics and 300 hand-written, interview-style problems, backed by a real embedded SQL engine — write actual queries and watch them run against a live database, not just multiple choice. Covers joins, window functions, subqueries & CTEs, aggregation, and query performance/indexing.

🎯 LEARN BY DOING, NOT JUST READING
Every lesson mixes flashcards, quizzes, case studies, hands-on projects, and realistic production-incident challenges, plus an interactive data pipeline simulation.

📈 TRACK REAL PROGRESS
XP, streaks, achievements, a GitHub-style activity heatmap, and a career readiness score that reflects how much of the curriculum, projects, and challenges you've actually completed — not just time spent in the app.

🔁 A DAILY HABIT, BUILT IN
One tap pulls a flashcard, a quiz question, and a SQL problem from what you've already unlocked, so keeping your streak alive takes under a minute a day.

🏆 SHARE WHAT YOU'VE EARNED
Finish a module — or the whole curriculum — and generate a shareable certificate to post or send.

🔒 YOUR PROGRESS STAYS ON YOUR DEVICE
No account and no login are required, and there's no cloud sync — every lesson is bundled with the app and works fully offline. Your XP, streaks, and answers are stored locally on your device.

Whether you're prepping for a data engineer interview, switching into the field, or just sharpening your SQL, DataNerd gives you one place to learn it, practice it, and prove it. ## Rankings - #2,377,945 — Overall ## Permissions and access ### Permissions - `android.permission.POST_NOTIFICATIONS` - `android.permission.VIBRATE` - `com.android.vending.CHECK_LICENSE` - `com.mangopickle.datanerd.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` ## Similar extensions and apps - [Datasaurio](https://chrome-stats.com/d/com.iansaura.academy) — 288 users - [Dbricks Data Eng & AI Tutor](https://chrome-stats.com/d/com.barnalitics.deac01) — 12 users - [DataVidhya](https://chrome-stats.com/d/com.tagmango.datavidhya) — 532 users - [DataSEA](https://chrome-stats.com/d/in.datapays.datasea) — 226 users - [Data Science Ultimate](https://chrome-stats.com/d/com.kncmapDataScience.datascience) — 790 users - [Databricks Data Engineer Prep](https://chrome-stats.com/d/com.dataengineerprepexam.newquizapplication) — 7 users - [Select Data](https://chrome-stats.com/d/co.selectdata.app) — 3,037 users - [Codebasics](https://chrome-stats.com/d/com.learnerx.codebasics) — 1,695 users - [SQL Practice: Learn Database](https://chrome-stats.com/d/com.murculus.sqlpractice) — 29,889 users, 4.80 / 5 - [Databricks Cert Exam Prep](https://chrome-stats.com/d/com.nicheelab.databricksexam) — 111 users - [DB Learn](https://chrome-stats.com/d/com.alphay.dblearn) — 147 users - [CodemasAcad](https://chrome-stats.com/d/com.CodemasAcad.nashaukufa) --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.mangopickle.datanerd)