Job Interview Prep & Coding
Algorithm Questions & Answers
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Watch two correct Two Sum solutions race and see why one wins. 90 courses in DSA, SQL and competitive programming, 60 Python problems. Start free.
Coding interviews are not a memory test. They are a test of whether you can explain why one correct answer beats another correct answer. Interview Prep is built around exactly that moment.
Before you agree to anything, the app shows you what it means. One real question — Two Sum — and two solutions that both work: check every pair, or remember what you have already seen. They run side by side on the same 64 numbers, with every comparison and every lookup counted as it happens. Same answer. Sixteen times the work. That is the difference an interviewer is listening for, and now you have watched it.
WHAT'S INSIDE
• A question every day — read it, think, reveal the answer, and keep your streak alive. Free, every day, no account needed to start.
• 90 short courses in three tracks: data structures and algorithms, SQL for interviews, and competitive programming. Arrays and hashing, two pointers and sliding windows, binary search, stacks and queues, trees and graphs, dynamic programming, SQL joins, window functions and indexes, and system design basics.
• 60 coding problems you solve in Python in a built-in editor: write your solution, run it and get it checked. 20 easy, 20 medium, 20 hard.
• 20 guided pattern projects: build two pointers, hash maps, sliding window, BFS, tree DFS, heaps and more, one step at a time.
• An AI mentor you can ask anything, in plain language, whenever a concept refuses to click.
• Mini quizzes and flashcard review to turn "I read it" into "I can recall it".
• Save any question, keep notes on any lesson, and browse cheatsheets and worked examples.
• Streaks and XP that reward showing up daily, which is the only study schedule that survives a real job.
HOW IT IS DIFFERENT
• Complexity is shown, not asserted. Where the app says an approach costs more, the number comes from running it.
• Built for the commute, the queue and the ten minutes before a stand-up. Short sessions, one question at a time.
• Available in 22 languages.
FREE AND PRO
Get started for free: the daily question is free every day, the first course of each track is free in full, two coding problems and one guided project are free, and the AI mentor answers three questions a day at no cost.
Interview Prep Pro unlocks all 90 courses, all 60 coding problems, all 20 guided projects, course certificates and unlimited AI mentor answers. It is a subscription you can manage or cancel at any time from your device's account settings; it renews automatically unless cancelled at least 24 hours before the period ends.
We take your privacy seriously. Read our full privacy policy at https://coddykit.com/terms/privacy-policy before subscribing, and review our Terms of Use below. By downloading this app you agree to both.
Your next interview is going to ask you why. Come in with the answer.
Terms of Use
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy
https://coddykit.com/terms/privacy-policy
Ratings & Reviews
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What's new:
• Attach screenshots when you contact us, so we can help faster.
• Find our answers under Profile → My Requests — you'll get a notification when we reply.
• Design refinements, bug fixes and performance improvements.
The developer, MEHMET CANKER (TR), indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Contact Info
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- MEHMET CANKER (TR)
- Size
- 74.5 MB
- Category
- Education
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 21 more
- English, Arabic, Danish, Dutch, Finnish, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Thai, Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro Lifetime $69.99
- Coding Interview Prep yearly $34.99
- Coding Interview Prep weekly $6.99
- Coding Interview Prep monthly $9.99
- Copyright
- © 2026 Coddy Tech