# OS Interview Questions vs Database Management System MCS

The clearest difference is rating: Database Management System MCS at 5.0 against OS Interview Questions's 1.0. Database Management System MCS also leads on update cadence (every 3 weeks vs every 95 months) and iOS requirement (12.0 vs 14.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. OS Interview Questions sells 1 one-off in-app purchase and Database Management System MCS sells 7 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Database Management System MCS holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

OS Interview Questions ships an update every 95 months, Database Management System MCS every 3 weeks. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | OS Interview Questions | Database Management System MCS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/os-interview-questions/id1070986818/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/database-management-system-mcs/id1581425389/reviews)** |
| Number of ratings | 1 | **2** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 95 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 16 MB | 68 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RAVINDHIRAN SUMITHRA](https://appshunter.io/developer/1571016391) | [Arshad Iqbal](https://appshunter.io/developer/1547001151) |

## What reviewers say

### OS Interview Questions

[App page](https://appshunter.io/ios/app/os-interview-questions/id1070986818)

Learn fundamental operating system concepts and interview questions with this educational app. It offers a user-friendly interface to explore topics, save favorites, and customize your reading experience. Sharpen your technical knowledge for career advancement.

**Highlights:** Operating system overview, Functions of operating systems, Types of operating systems, Embedded OS interview questions, User-friendly interface, Personalized library for favorites, Customizable themes and fonts

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OS Interview Questions | $3.99 | one-time |


### Database Management System MCS

[App page](https://appshunter.io/ios/app/database-management-system-mcs/id1581425389)

Practice over 2200 database management system multiple-choice questions with this comprehensive quiz app. It covers fundamental and advanced computer science topics, offering self-assessment tests and a quick study guide for students and beginners.

**Highlights:** 2200+ DBMS quiz MCQs, Covers 20+ textbook chapters, Self-assessment tests, Answer key provided, Quick study guide, Online degree program support

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Package | $4.99 | per month |
| 3 Months Package | $9.99 | per 3 months |
| 6 Months Package | $14.99 | per 6 months |
| 1 Year Package | $19.99 | per year |
| 1500 Coins | $0.99 | one-time |
| 3500 Coins | $1.99 | one-time |
| 6000 Coins | $2.99 | one-time |


## Frequently asked questions

### Is OS Interview Questions free?

OS Interview Questions is free to download, with in-app purchases available.

### Is Database Management System MCS free?

Database Management System MCS is free to download, with in-app purchases available.

### Which has better reviews, OS Interview Questions or Database Management System MCS?

Database Management System MCS is rated higher. OS Interview Questions averages 1.0 out of 5 from 1 ratings, while Database Management System MCS averages 5.0 from 2 ratings.

### Do OS Interview Questions or Database Management System MCS have ads?

Both OS Interview Questions and Database Management System MCS show ads.

### Which is updated more often, OS Interview Questions or Database Management System MCS?

OS Interview Questions ships an update every 95 months, and Database Management System MCS every 3 weeks. Most recently, OS Interview Questions was updated on October 12, 2026 and Database Management System MCS on October 3, 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.*