Comparison

OSIRIS Radboud University vs Sharpen Algorithms

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

Head to head

OSIRIS Radboud University

Learn algorithms by building

Free

📚 Education

No ratingsView app →

About

OSIRIS Radboud University

Features

Read full description

OSIRIS Student Radboud University contains functionalities like, subscription for courses and tests, results, study progress, messages and notes.

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

OSIRIS Radboud University4 screens

Sharpen Algorithms4 screens

Verdict

The call

The clearest difference is update cadence: Sharpen Algorithms at fortnightly against OSIRIS Radboud University's every 6 months. OSIRIS Radboud University's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

OSIRIS Radboud University ships an update every 6 months, Sharpen Algorithms fortnightly. The most recent releases landed on October 26, 2026 and October 14, 2026 respectively.

Scorecard2 real differences · 4 level

OSIRIS Radboud University versus Sharpen Algorithms: the parameters behind the verdict, then further details
Parameter	OSIRIS Radboud University	Sharpen Algorithms
Price	Free	Free
Update frequency	Every 6 months	Fortnightly — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	11.0 — better	15.0
Further details — not scored
Size	34 MB	28 MB
Age rating	4+	4+
Developer	CACI bv	Ivan Silvero

In-app purchases

None

OSIRIS Radboud University

No in-app purchases

None

Sharpen Algorithms

No in-app purchases

Questions

Is OSIRIS Radboud University free?

OSIRIS Radboud University is free to download, with no in-app purchases.

Is Sharpen Algorithms free?

Sharpen Algorithms is free to download, with no in-app purchases.

Do OSIRIS Radboud University or Sharpen Algorithms have ads?

Neither OSIRIS Radboud University nor Sharpen Algorithms shows ads.

Which is updated more often, OSIRIS Radboud University or Sharpen Algorithms?

OSIRIS Radboud University ships an update every 6 months, and Sharpen Algorithms fortnightly. Most recently, OSIRIS Radboud University was updated on October 26, 2026 and Sharpen Algorithms on October 14, 2026.