Comparison

Algo Demo vs LeetCode

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

Head to head
About

Algo Demo

Features
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Algo Demo — Visualize Algorithms & Data Structures Designed for CS students, interview preppers, and educators, Algo Demo demystifies algorithms through interactive animations and step-by-step visualizations. Covered Topics: • Data Structures: Linked Lists, Binary Trees, Stacks, Hash Tables • Core Algorithms: Sorting, Two Pointers, Dynamic Programming, Binary Search Key Features: • All-New Progress Control: Our most powerful interactive upgrade yet! Drag a sleek progress bar to jump to any step of an algorithm in real-time. Perfect your understanding by replaying complex parts at your own pace. • Live Code Playback: Watch the code execute in perfect sync with the visualization. Key lines are highlighted as the algorithm runs, forging a clear connection between abstract logic and concrete implementation. • Smooth Animations: Break down each step of algorithm execution with crystal-clear visuals. • Interactive Playback: Adjust speed, pause, or rewind for deeper learning.

About

LeetCode

Practice coding challenges and prepare for technical interviews on the go. Discover company-specific questions, manage your practice lists, and track your progress. Stay updated with contests and daily quests to improve your skills.

Highlights
  • Search and discover company questions
  • Practice coding challenges
  • Manage practice lists
  • Track personal progress
  • Contest registration and calendar sync
  • Daily challenges and quests
Features
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One LeetCode a day keeps your reasoning in play. Introducing LeetCode for iOS and iPadOS. Enjoy LeetCoding right at your fingertips — jump in for quick practice, browse your collections, and stay on top of important events and progress. With LeetCode in the palm of your hand, you can easily: • Search and discover the latest company questions. • View and quickly practice your favorite challenges right in the palm of your hand. • Manage your lists or add to your wishlist to practice later. • Keep track of your personal progress with a rich profile view and widgets. • Stay notified and keep your streak alive — level up with new challenges and quests every day. • Register for contests and sync them to your calendar. Live Activities keep you updated on contest progress — so you never miss a moment. • And more content and features coming every month… Terms of Services: https://leetcode.com/terms/ Privacy Policy: https://leetcode.com/privacy/

Screenshots

Algo Demo4 screens
LeetCode4 screens

Verdict

The call

The clearest difference is in-app purchases: Algo Demo at none against LeetCode's 2. Algo Demo also leads on iOS requirement (13.0 vs 16.0). LeetCode's advantage is ads (none vs shown) and update cadence (fortnightly vs every 4 months). On price and device support 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. LeetCode sells 2 in-app purchases, starting at $35.00 per month. Algo Demo asks for nothing beyond the download.

UpkeepUpdate frequency

Algo Demo ships an update every 4 months, LeetCode fortnightly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 6 level
Algo Demo versus LeetCode: the parameters behind the verdict, then further details
ParameterAlgo DemoLeetCode
PriceFreeFree
Rating—4.8 (662 ratings) — better
Positive reviews—44.2% of reviews
Number of ratings—662 — better
Update frequencyEvery 4 monthsFortnightly — better
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Ad-supported
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better16.0
Further details — not scored
Size36 MB110 MB
Age rating17+4+
Developerzhuo zengLeetCode

In-app purchases

None

Algo Demo

No in-app purchases

2 purchases

LeetCode

Subscriptions2
  • LeetCode Premium Monthly$35.001 Month
  • LeetCode Premium Yearly$159.001 Year

Questions

Is Algo Demo free?
Algo Demo is free to download, with no in-app purchases.
Is LeetCode free?
LeetCode is free to download, with in-app purchases available.
Do Algo Demo or LeetCode have ads?
Algo Demo shows ads; LeetCode does not.
Which is updated more often, Algo Demo or LeetCode?
Algo Demo ships an update every 4 months, and LeetCode fortnightly. Most recently, Algo Demo was updated on October 25, 2026 and LeetCode on October 28, 2026.

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