# BackendEngineer Questions vs System Design interview prep

The clearest difference is price: System Design interview prep at Free against BackendEngineer Questions's $7.99. BackendEngineer Questions's advantage is in-app purchases (none vs 5) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

System Design interview prep is free to download; BackendEngineer Questions costs $7.99 up front. System Design interview prep sells 5 in-app purchases, starting at $3.99 per 7 days. BackendEngineer Questions asks for nothing beyond the download.

## The numbers

| Metric | BackendEngineer Questions | System Design interview prep |
| --- | --- | --- |
| Price | $7.99 | **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 | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 89 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Buydeepdiscount.com LLC](https://appshunter.io/developer/817177888) | [Abdelhak El Moussaoui](https://appshunter.io/developer/1827690433) |

## What reviewers say

### BackendEngineer Questions

[App page](https://appshunter.io/ios/app/backendengineer-questions/id6502676960)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is BackendEngineer Questions free?

BackendEngineer Questions costs $7.99, with no in-app purchases.

### Is System Design interview prep free?

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

### Do BackendEngineer Questions or System Design interview prep have ads?

System Design interview prep shows ads; BackendEngineer Questions does not.

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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.*