arXiver vs Algorithms HQ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
arXiver
Browse pre-print research papers from arXiv directly on your iPad. Filter by categories and open PDF files in your preferred external application.
- Browse arXiv pre-prints
- Category selection
- Open PDFs externally
- iPad optimized interface
Read full descriptionHide full description
It's a browser of the preprint server arXiv, tailored for iPad. It allows you to select select various categories, and to open the PDF in an external app.
Algorithms HQ
Learn computer science algorithms through interactive animations. Visualize data manipulation and execution step-by-step with pseudo-code tracking and variable value updates. Quickly reference algorithm characteristics and customize input data for deeper understanding.
- Animated algorithm execution
- Step-by-step instruction control
- Pseudo-code and variable tracking
- Customizable input data
- Algorithm reference guide
- Data structure evolution visualization
Read full descriptionHide full description
A fun and didactic app to learn computer science algorithms! See how algorithms are working by watching an animation of their execution. Understand how data is manipulated as it is animated through an intuitive representation of its contents. Always know which line is executed in the pseudo-code, what are the values of the variables. Need to quickly refresh your memory? Just use the app as a quick reference on the main characteristics of each algorithm! Main features: - Execute a single instruction, or undo the previous one - Run, or rewind the algorithm until you decide to pause the execution - Adjust the speed of the animation - Best and worst case input data for sorting algorithms - Change the input data: size (up to 500), maximum value or data distribution (random, sorted, many duplicates, etc.) - For data structures, choose the next function to execute, or let a scenario choose for you, so you can see how the data structure evolves. - Landscape or portrait orientation This version contains the following algorithms: Linear Data Structures: - Linked Lists, including a view on memory - Queue - Stack Sorting algorithms: - Bubble Sort - Cocktail Sort - Gnome Sort - Insertion Sort - Quick Sort - Selection Sort More algorithms and more features are on the way!
Verdict
The clearest difference is review sentiment: Algorithms HQ at 100% against arXiver's 40%. Algorithms HQ also leads on rating (4.0 vs 3.3). arXiver's advantage is update cadence (every 2 months vs every 16 months) and ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Algorithms HQ holds the better App Store score, 4.0 against 3.3. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 40% of arXiver's written reviews are positive against 100% of Algorithms HQ's.
arXiver ships an update every 2 months, Algorithms HQ every 16 months. The most recent releases landed on October 3, 2026 and September 24, 2026 respectively.
| Parameter | arXiver | Algorithms HQ |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (3 ratings) | 4.0 (1 ratings) — better |
| Positive reviews | 40.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 2 months — better | Every 16 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPad |
| Requires iOS | 8.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 0 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuji Tachikawa | Cyril Carrez |
Customer experience
arXiver
Algorithms HQ
In-app purchases
arXiver
No in-app purchases
Algorithms HQ
No in-app purchases









