Comparison

Coding Interview vs Sharpen Algorithms

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

Head to head
About

Coding Interview

Features
Read full description

Algo Mind turns abstract algorithms into something you can see. Every lesson pairs a step-by-step animated visualization with synced, highlighted code โ€” you watch pointers move, trees grow, and tables fill in until the idea actually clicks. Stop memorizing solutions; learn the patterns behind them. WATCH ALGORITHMS THINK โ€ข 164 classic problems fully animated โ€” play, pause, and step through at your own pace โ€ข Code highlighted in sync with the animation, line by line โ€ข A live memory view shows variables, pointers, and call frames as they change โ€ข Arrays, hash maps, linked lists, stacks, queues, binary trees, tries, heaps, graphs, matrices, DP tables, recursion stacks, sliding windows, and bit operations โ€” one consistent visual language 1,576 PROBLEMS DEEP โ€ข The full interview canon, from Two Sum to hard dynamic programming โ€ข Solutions in four languages: Python, Java, Kotlin, and C++ โ€ข Plain-language explanations, worked examples, and time/space complexity for every problem โ€ข Filter by topic, difficulty, company, or your bookmarks โ€” and track every solve A CLEAR PATH โ€ข Eight chapters from Foundations to interview-ready, picking up exactly where you left off โ€ข 21 animated cheatsheets with nearly 500 animated steps and predict-the-next-step quizzes โ€” perfect for a fast review the night before an interview PRACTICE THAT STICKS โ€ข Quick 5, Daily Mix, weak-spot review, or build your own session by topic, difficulty, and company โ€ข Three question types: order the steps, true/false concept checks, and 176 fill-in-the-blank code puzzles โ€ข Timed Rank Mode for when you want a little pressure STAY ON TRACK โ€ข Daily streaks that count any learning activity โ€ข XP and per-topic progress tracking โ€ข Bookmarks and optional study reminders โ€ข Full dark mode โ€ข Core lessons work offline โ€ข No ads, ever START TODAY A selection of sample problems, puzzles, and cheatsheets is free. An optional Algo Mind Premium subscription unlocks the full library. Subscriptions renew automatically and can be managed in your App Store account settings. Privacy Policy: https://www.algomind.app/privacy.html Terms of Use: https://www.algomind.app/terms.html

About

Sharpen Algorithms

Features
Read full description

Algorithms click when you build them yourself. Pick a problem, arrange the building blocks in the right order, and prove you understand the logic before you see the solution. Three tiers of difficulty push you from concepts to pseudocode to real code. 75 problems across Arrays, Linked Lists, Trees, Graphs, Dynamic Programming, and more. Stop grinding. Start understanding.

Screenshots

Coding Interview4 screens
Sharpen Algorithms4 screens

Verdict

The call

The clearest difference is in-app purchases: Sharpen Algorithms at none against Coding Interview's 2. Sharpen Algorithms also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Coding Interview sells 2 in-app purchases, starting at $29.99 per month. Sharpen Algorithms asks for nothing beyond the download.

UpkeepUpdate frequency

Coding Interview ships an update weekly, Sharpen Algorithms fortnightly. The most recent releases landed on October 11, 2026 and September 28, 2026 respectively.

Scorecard2 real differences ยท 4 level
Coding Interview versus Sharpen Algorithms: the parameters behind the verdict, then further details
ParameterCoding InterviewSharpen Algorithms
PriceFreeFree
Update frequencyWeekly โ€” betterFortnightly
AdsYesNo โ€” better
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS16.015.0 โ€” better
Further details โ€” not scored
Size90 MB28 MB
Age rating4+4+
DeveloperMooshuroi LtdIvan Silvero

In-app purchases

2 purchases

Coding Interview

Subscriptions2
  • AlgoMind Pro Monthly$29.991 Month
  • AlgoMind Pro Annual$89.991 Year
None

Sharpen Algorithms

No in-app purchases

Questions

Is Coding Interview free?
Coding Interview is free to download, with in-app purchases available.
Is Sharpen Algorithms free?
Sharpen Algorithms is free to download, with no in-app purchases.
Do Coding Interview or Sharpen Algorithms have ads?
Coding Interview shows ads; Sharpen Algorithms does not.
Which is updated more often, Coding Interview or Sharpen Algorithms?
Coding Interview ships an update weekly, and Sharpen Algorithms fortnightly. Most recently, Coding Interview was updated on October 11, 2026 and Sharpen Algorithms on September 28, 2026.

Other comparisons