# System Design interview prep vs AlgoMaster

The clearest difference is review sentiment: AlgoMaster at 100% against System Design interview prep's 0%. AlgoMaster also leads on rating (5.0 vs 1.0) and in-app purchases (none vs 5). On price, ratings volume, device support and iOS requirement there is nothing between them.

Both are free to download. System Design interview prep sells 5 in-app purchases, starting at $3.99 per 7 days. AlgoMaster asks for nothing beyond the download.

AlgoMaster holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews point the same way: 0% of System Design interview prep's written reviews are positive against 100% of AlgoMaster's.

System Design interview prep ships an update monthly, AlgoMaster every 2 days. The most recent releases landed on September 26, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | System Design interview prep | AlgoMaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/system-design-interview-prep/id6756310915/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/algomaster-interview-prep/id6788440905/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 89 MB | 71 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Abdelhak El Moussaoui](https://appshunter.io/developer/1827690433) | [AlgoMasterIO LLC](https://appshunter.io/developer/6788440907) |

## What reviewers say

### System Design interview prep

[App page](https://appshunter.io/ios/app/system-design-interview-prep/id6756310915)

This app simulates system design interviews with an AI interrogator and interactive scenarios. Practice real-world architecture problems, receive instant feedback, and track your progress to ace your next tech interview.

**Highlights:** Interactive War Room for architecture scenarios, AI Interrogator challenges design decisions, Realistic system design interview questions, Daily practice drills for skill sharpening, Detailed performance analytics, Instant feedback and best practice learning

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access | $3.99 | per 7 days |
| Unlimited access | $4.99 | per 7 days |
| Unlimited access | $6.99 | per month |
| Unlimited access | $12.99 | per month |
| Unlimited access | $99.99 | per year |


### AlgoMaster

[App page](https://appshunter.io/ios/app/algomaster-interview-prep/id6788440905)

Prepare for coding and system design interviews with structured learning, visual explanations, and pattern-based practice. Master core computer science concepts and build intuition for technical interviews.

**Highlights:** Curated DSA practice problems, Pattern-based interview preparation, System design lessons, Visual explanations and animations, Progress tracking, Quizzes and revision content

**In-app purchases:** none


## Frequently asked questions

### Is System Design interview prep free?

System Design interview prep is free to download, with in-app purchases available.

### Is AlgoMaster free?

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

### Which has better reviews, System Design interview prep or AlgoMaster?

AlgoMaster is rated higher. System Design interview prep averages 1.0 out of 5 from 2 ratings, while AlgoMaster averages 5.0 from 3 ratings.

### Do System Design interview prep or AlgoMaster have ads?

System Design interview prep shows ads; AlgoMaster does not.

### Which is updated more often, System Design interview prep or AlgoMaster?

System Design interview prep ships an update monthly, and AlgoMaster every 2 days. Most recently, System Design interview prep was updated on September 26, 2026 and AlgoMaster on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*