# AlgoCards: Code Interview Prep — Algorithm Flashcards & DSA

> Algorithm Flashcards & DSA (iPhone/iPad app by Ryan Hamby.)

- Source: https://appshunter.io/ios/app/algocards-code-interview-prep/id6754247227 (this page in markdown: same URL + `.md`)
- Developer: [Ryan Hamby](https://appshunter.io/developer/1847365372)
- Category: Education, Developer Tools
- Price: Free
- Age rating: 4+
- Requires: iOS 15.6 · 61 MB
- Languages: American English
- Released: 2025-11-17
- Data updated: 2026-05-15
- User reviews in markdown: https://appshunter.io/ios/app/algocards-code-interview-prep/id6754247227/reviews.md

## What is AlgoCards?

Master coding interviews with 390 problems, company-specific prep lists, and spaced repetition — completely free. The only app with dedicated trading firm and quant interview prep.

Practice the exact problems asked at Google, Meta, Amazon, Citadel, Jane Street, Two Sigma, Goldman Sachs, and 20+ more companies.

WHAT'S INSIDE:
- 390 curated problems with detailed Python solutions
- Company-specific problem lists for 30+ companies
- SM-2 spaced repetition for optimal review scheduling
- Flashcard mode for on-the-go review
- Algorithm pattern cheat sheets with code templates
- Weakness detection that adapts to your performance

COMPANY-SPECIFIC PREP:
Filter problems by company and see what they actually ask. Coverage includes:

Trading Firms: Citadel, Citadel Securities, Jane Street, Two Sigma, Jump Trading, Hudson River Trading, IMC, DE Shaw, SIG, Virtu, Point72, Millennium

FAANG & Big Tech: Google, Meta, Amazon, Apple, Microsoft, Netflix, Uber, Airbnb, LinkedIn, Stripe, TikTok, Databricks, Nvidia, OpenAI, Palantir, and more

ALGORITHM PATTERNS:
- Arrays & Hashing
- Two Pointers & Sliding Window
- Binary Search
- Stack & Queue
- Linked Lists
- Trees & Tries
- Graphs & BFS/DFS
- Dynamic Programming
- Greedy
- Heaps & Priority Queues
- Backtracking

SMART REVIEW SYSTEM:
1. Study problems in flashcard or detail mode
2. Rate your confidence after each problem
3. AlgoCards schedules your next review at the scientifically optimal interval
4. Weakness detection identifies your weak patterns and prioritizes them
5. Build lasting pattern recognition, not temporary memorization

WHO IT'S FOR:
- Software engineers prepping for FAANG and Big Tech
- Quant developers targeting trading firms
- CS students preparing for internship interviews
- Career switchers learning algorithms and data structures

100% FREE. No paywall. No ads. No subscriptions. Every problem, every solution, every feature.

Download AlgoCards and prep smarter.


## Version history (last 5 releases)

### 1.0.9 — 2026-03-23

Massive content update:

- 390 problems (up from 150) with full Python solutions
- 30 company-specific problem lists including Citadel, Jane Street, Two Sigma, Google, Meta, Amazon, and more
- Research-backed frequency ordering — problems sorted by how often each company actually asks them
- Trading firm OA problems: Stable Segments, Currency Arbitrage Detection, Order Book Implementation
- New algorithm patterns: Count Inversions, Josephus Problem, Maximum Drawdown, Continuous Subarrays
- All content is now free — no paywall, no ads
- Spaced repetition and weakness detection for all users

### 1.08 — 2026-01-03

50 additional problems. Multiple bug fixes to improve app scalability and caching. Readiness formula decay with time coefficient.

### 1.0.5 — 2025-12-03

Further bug fixes for ads pages.

### 1.0.4 — 2025-11-24

Reduced size of ad banner bar to clip to size of ads. Dynamic ad bars across macOS and iPadOS. Added interstitial and app open ads for sporadic advertisements in-app.

### 1.0.3 — 2025-11-19

Fixed bugs for login screen that previously signed out users inadvertently. Improved scoring of the interview readiness formula and fixed graphing capabilities.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-15.*