# System Design interview prep vs Database Design Basics

The clearest difference is in-app purchases: Database Design Basics at none against System Design interview prep's 5. Database Design Basics also leads on update cadence (daily vs monthly) and iOS requirement (15.1 vs 17.6). On price, ads and device support 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. Database Design Basics asks for nothing beyond the download.

System Design interview prep ships an update monthly, Database Design Basics daily. The most recent releases landed on September 26, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | System Design interview prep | Database Design Basics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/system-design-interview-prep/id6756310915/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 89 MB | 37 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Abdelhak El Moussaoui](https://appshunter.io/developer/1827690433) | [AFTW LLC](https://appshunter.io/developer/1886356149) |

## 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 |


### Database Design Basics

[App page](https://appshunter.io/ios/app/database-design-basics/id6768553095)

**Features:** macOS Compatibility, Vision Pro support

**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 Database Design Basics free?

Database Design Basics is free to download, with no in-app purchases.

### Do System Design interview prep or Database Design Basics have ads?

Both System Design interview prep and Database Design Basics show ads.

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

System Design interview prep ships an update monthly, and Database Design Basics daily. Most recently, System Design interview prep was updated on September 26, 2026 and Database Design Basics on September 29, 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.*