Comparison

lemma vs Dynamic Programming Concepts

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

lemma

This app provides focused, daily practice for quantitative interviews, featuring timed sprints of math and probability problems. It tracks your skill across disciplines with adaptive difficulty and offers hints and solutions to help you improve. Designed for those preparing for trading firm interviews or seeking to build a quantitative thinking habit.

Highlights
  • Daily timed problem sprints
  • Per-category ELO skill tracking
  • Adaptive difficulty
  • Hints and step-through solutions
  • Streaks, XP, and achievements
  • Leaderboard
Features
Read full description

Train like a quant. Daily. Lemma is the focused, no-fluff prep app for quantitative interviews — built for students and grads targeting Jane Street, Citadel, Optiver, Two Sigma, and the rest of the trading-firm gauntlet. WHAT'S INSIDE WITH YOUR SUBSCRIPTION • Daily sprints — bite-sized timed sets of mental math, probability, combinatorics, expected value, and market-making problems • Per-category ELO — your skill is tracked across 10 disciplines, from Novice to Expert • Adaptive difficulty — problems chosen to keep you at the edge of your level, not above or below • Hints + step-through solutions — get unstuck without giving up • Streaks, XP, leagues — habit loops without the noise • Achievements — unlock as you grind • Leaderboard — see how you stack up WHO IT'S FOR • CS / math undergrads applying to trading firms • Recent grads prepping for technical interviews • Self-learners who want a daily quantitative-thinking habit • Anyone curious about how trading interviews actually feel WHY LEMMA We strip out the gamified clutter and keep what matters: hard problems, fast iteration, real numbers on your progress. The interface borrows more from a Bloomberg terminal than a typical mobile game — monospaced metrics, hairline borders, dark by default. Most prep books drown you in 800 pages. Most courses lock you in for months. Lemma is 10 minutes a day, sharpened every day. — Lemma offers an optional auto-renewable subscription for unlimited daily sprints and premium problem sets. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://rogeru13.github.io/lemma-legal/privacy-policy/

About

Dynamic Programming Concepts

Features
Read full description

Dynamic Programming Concepts is an independent study app for learners who want structured practice with dynamic programming ideas, patterns, and problem-solving habits. It is built for beginners, interview prep, computer science students, and developers reviewing algorithm design. Study across four focused categories: Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts. Work through 160 practice questions with clear explanations for every answer, then use review tools to strengthen weak areas over time. Features: - FSRS spaced-repetition intervals for smarter review - Weak-point heatmap to spot topics that need attention - Daily challenge for consistent practice - Mock exams for timed review sessions - Every question includes an explanation - Offline practice with no login required Independent study app for Dynamic Programming Concepts practice. Not affiliated with, endorsed by, or sponsored by any company, certification body, exam operator, or vendor. All trademarks belong to their respective owners. Practice offline, no login required.

Screenshots

lemma4 screens
Dynamic Programming Concepts4 screens

Verdict

The call

The clearest difference is in-app purchases: Dynamic Programming Concepts at none against lemma's 3. On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. lemma sells 3 in-app purchases, starting at $6.99 per 7 days. Dynamic Programming Concepts asks for nothing beyond the download.

Scorecard1 real difference · 8 level
lemma versus Dynamic Programming Concepts: the parameters behind the verdict, then further details
ParameterlemmaDynamic Programming Concepts
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size31 MB38 MB
Age rating12+4+
DeveloperRoger YouAFTW LLC

In-app purchases

3 purchases

lemma

Subscriptions3
  • Lemma Premium$6.997 Days
  • Lemma Premium$9.991 Month
  • Lemma Premium3 Days trial$59.991 Year
None

Dynamic Programming Concepts

No in-app purchases

Questions

Is lemma free?
lemma is free to download, with in-app purchases available.
Is Dynamic Programming Concepts free?
Dynamic Programming Concepts is free to download, with no in-app purchases.
Do lemma or Dynamic Programming Concepts have ads?
Neither lemma nor Dynamic Programming Concepts shows ads.

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