Systematic FYI vs ReelCode
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Systematic FYI
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Review key concepts with a simple system design flashcard app for your system design interview. This app includes three sets of flashcards focused on common interview questions, patterns, and tradeoffs. Itβs designed to help you build intuition for system design interviews at FAANG companies like Google, Meta, Amazon, and other top tech firms. Ideal for software engineers preparing for interviews or brushing up on architecture fundamentals. No extra features or distractionsβjust system design flashcard practice. Privacy Policy: https://www.systematic.fyi/privacy Terms of Service: https://www.systematic.fyi/terms
ReelCode
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ReelCode β Ship the Interview Real interview problems, one swipe at a time. ReelCode turns interview prep into a fast, addictive, scroll-style experience β no more sitting through hour-long tutorials or losing track of what you've already covered. Every card in your feed is a real coding or CS-fundamentals problem, pulled from actual interview rounds. Swipe through DSA challenges, Java questions, System Design scenarios, and more β each one clearly tagged by difficulty (Easy, Medium, Hard) so you always know what you're getting into. What you'll practice ReelCode covers the topics that actually come up in interviews: Data Structures & Algorithms, Java, Low-Level Design (LLD), System Design, DBMS, Operating Systems, SQL, Spring Boot, React, and DevOps. Set your preferred languages β Java, Python, C++, JavaScript, TypeScript, Go, C#, Kotlin, Swift, Rust, Ruby, and more β so relevant problems show up first. Recall, don't just review ReelCode tracks what you've already seen and brings it back when it matters, so you're not just passively scrolling β you're reinforcing what you've learned. Problems you've encountered before are clearly marked, helping you build real recall instead of false confidence. Built for how you actually study No long sign-up forms, no clunky course structure. Log in in seconds with email OTP, Google, or Apple, and land straight in your feed. Search by problem, error, or topic when you need something specific, or just keep swiping and let the feed guide you. Who it's for Students and freshers preparing for their first technical interviews Working professionals prepping for a job switch Anyone who wants consistent, low-effort interview practice that fits into spare minutes throughout the day Stop dreading interview prep. Open ReelCode, swipe into a problem, and start shipping the interview β one card at a time.
Screenshots
Verdict
The clearest difference is in-app purchases: ReelCode at none against Systematic FYI's 1. Systematic FYI's advantage is ads (none vs shown) and update cadence (every 5 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Systematic FYI sells 1 in-app purchase, starting at $3.99 per month. ReelCode asks for nothing beyond the download.
Systematic FYI ships an update every 5 days, ReelCode every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | Systematic FYI | ReelCode |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days β better | Every 3 weeks |
| Ads | No β better | Yes |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 β better |
| Further details β not scored | ||
| Size | 30 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | William Prin | Arrays Technologies Private Limited |
In-app purchases
Systematic FYI
- Systematic Premium$3.991 Month
ReelCode
No in-app purchases
Questions
Is Systematic FYI free?
Is ReelCode free?
Do Systematic FYI or ReelCode have ads?
Which is updated more often, Systematic FYI or ReelCode?
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