---
title: "Quarry: SQL & Python Prep - Reviews, Revenue and Downloads in Switzerland | Apple App Store"
description: "Quarry is a focused, offline gym for data and coding interviews. 108 hand-picked problems across SQL, pandas, and Python — write real code, run it on your device, and get graded instantly.  Everything"
---

# Quarry: SQL & Python Prep — Switzerland

![Quarry App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/72/aa/ca/72aacaf8-ad1e-07d2-6fab-1a6863beccea/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Mayank Gulaty](https://apptail.io/developer/mayank-gulaty-SPjevc)
**Category:** Education
**Rating:** N/A (0 ratings)
**Price:** Free
**Bundle ID:** com.flowbitstudio.quarry
**Store:** Apple App Store
**Country:** Switzerland
**Version:** 1.1 (released 2026-10-23)
**Original Release:** 2026-07-07
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/ch/app/app/id6785931623)
**AppTail Page:** [https://apptail.io/app/quarry-sql-python-prep-umTA/switzerland](https://apptail.io/app/quarry-sql-python-prep-umTA/switzerland)

## Quarry Description
Quarry is a focused, offline gym for data and coding interviews. 108 hand-picked problems across SQL, pandas, and Python — write real code, run it on your device, and get graded instantly.

Everything runs on-device. The SQL and Python engines are built into the app, so there's no sign-up, no internet requirement, and nothing you write ever leaves your phone or iPad. Practice on a plane, on the subway, or anywhere.

WHAT'S INSIDE
• 108 problems across three tracks: SQL queries, pandas data wrangling, and Python algorithms & data structures.
• Real execution, real grading. Your output is checked against the expected result — no self-marking.
• Company tags. Filter problems by the company you're interviewing at.
• Hints and full solutions when you're stuck.
• Difficulty levels from Easy to Hard, grouped by topic.
• A free-form Playground for scratch SQL and Python.
• Universal app — designed for both iPhone and iPad.

PRIVATE BY DESIGN
No accounts. No analytics. No ads. No tracking. Quarry collects nothing and works fully offline.

Whether you're prepping for a data analyst, data engineer, data scientist, or software role, Quarry gives you a quiet, fast place to actually practice.

## Quarry Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/3a/9a/e9/3a9ae9db-8dec-0e24-ffce-593416e93f4f/iphone-2-companies.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/20/f2/8a/20f28a31-9067-2a47-1b5e-15452141889a/iphone-3-solve.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/81/e9/0e/81e90e25-49bc-18b8-bbd8-f67f16445962/iphone-1-home.png/1242x2688.png)







## Quarry Available In
- [Angola](https://apptail.io/app/quarry-sql-python-prep-umTA/angola)
- [Bahrain](https://apptail.io/app/quarry-sql-python-prep-umTA/bahrain)
- [Bermuda](https://apptail.io/app/quarry-sql-python-prep-umTA/bermuda)
- [Belize](https://apptail.io/app/quarry-sql-python-prep-umTA/belize)
- [Switzerland](https://apptail.io/app/quarry-sql-python-prep-umTA/switzerland)
- [China](https://apptail.io/app/quarry-sql-python-prep-umTA/china)
- [United Kingdom](https://apptail.io/app/quarry-sql-python-prep-umTA/united-kingdom)
- [Israel](https://apptail.io/app/quarry-sql-python-prep-umTA/israel)
- [Iceland](https://apptail.io/app/quarry-sql-python-prep-umTA/iceland)
- [Jordan](https://apptail.io/app/quarry-sql-python-prep-umTA/jordan)
- [Lebanon](https://apptail.io/app/quarry-sql-python-prep-umTA/lebanon)
- [Sri Lanka](https://apptail.io/app/quarry-sql-python-prep-umTA/sri-lanka)
- [North Macedonia](https://apptail.io/app/quarry-sql-python-prep-umTA/north-macedonia)
- [Namibia](https://apptail.io/app/quarry-sql-python-prep-umTA/namibia)
- [Nigeria](https://apptail.io/app/quarry-sql-python-prep-umTA/nigeria)
- [Senegal](https://apptail.io/app/quarry-sql-python-prep-umTA/senegal)
- [Suriname](https://apptail.io/app/quarry-sql-python-prep-umTA/suriname)
- [Uganda](https://apptail.io/app/quarry-sql-python-prep-umTA/uganda)
- [United States](https://apptail.io/app/quarry-sql-python-prep-umTA/united-states)
- [Uruguay](https://apptail.io/app/quarry-sql-python-prep-umTA/uruguay)

---

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