IOS Interview Questions and Answers in 2025 (100+ Q&A)

IOS

Ques:- How do you secure data in an iOS app

Asked In :- DigiQ Solutions, Yotta Techports, pinnacle infotech, jasmin infotech pvt ltd,

Right Answer:
To secure data in an iOS app, you can use the following methods:

1. **Keychain Services**: Store sensitive information like passwords and tokens securely.
2. **Data Encryption**: Encrypt sensitive data before storing it, using libraries like CommonCrypto or third-party solutions.
3. **Secure Coding Practices**: Validate and sanitize inputs to prevent injection attacks.
4. **Use HTTPS**: Ensure all network communications are encrypted using HTTPS.
5. **App Transport Security (ATS)**: Enable ATS to enforce secure connections.
6. **User Authentication**: Implement biometric authentication (Face ID, Touch ID) or other secure login methods.
7. **Data Protection API**: Use iOS's built-in data protection features to encrypt files when the device is locked.
8. **Obfuscation**: Obfuscate code and sensitive data to make it harder to reverse-engineer.

By combining these methods, you can enhance the security of your iOS app's data.

IOS

Ques:- How do you generate sales reports using a POS system

Asked In :- mobifly, AHEX TECHNOLOGIES, Nalsoft, Cumulations Technologies, Mobiotics, Zinier,

Right Answer:
To generate sales reports using a POS system, access the reporting or analytics section of the software, select the desired date range and filters (like product categories or payment methods), and then run the report. You can usually export the report in formats like PDF or Excel for further analysis.

IOS

Ques:- What is the difference between Swift and Objective C

Asked In :- Kratin Mobile Software Solution,

Right Answer:
Swift is a modern programming language that is safer and easier to read, while Objective-C is an older language that relies on C syntax and is more complex. Swift has features like optionals and type inference, whereas Objective-C uses manual memory management and has a more verbose syntax.

IOS

Ques:- What is the App Store review process and what are its guidelines

Asked In :- mobifly, Mundrisoft Solutions LLP, Mobily Infotech, Yotta Techports, jasmin infotech pvt ltd,

Right Answer:
The App Store review process involves Apple reviewing your app for compliance with their guidelines before it can be published. The guidelines cover areas such as safety, performance, business, design, and legal requirements. Apps must be functional, free of bugs, adhere to privacy policies, and not contain inappropriate content. The review typically takes a few days, and developers can appeal decisions if their app is rejected.

IOS

Ques:- What is the process for setting up tax rules in POS

Asked In :- POPCORNAPPS SOFTWARE PVT, Mundrisoft Solutions LLP, Amtex Software Solutions, Oppo Mobile Communications, Nalsoft, ApMoSys Technologies, Kratin Mobile Software Solution, Mobiotics, Rising Stars Mobile India, Amshuhu,

Right Answer:
To set up tax rules in a POS system, follow these steps:

1. Access the POS settings or configuration menu.
2. Navigate to the tax settings section.
3. Create a new tax rule by specifying the tax name, rate, and applicable products or categories.
4. Define any exemptions or special conditions if necessary.
5. Save the tax rule and ensure it is activated.
6. Test the setup by processing a transaction to verify the tax is applied correctly.

IOS

Ques:- What is Xcode and what role does it play in iOS development

Asked In :- ApMoSys Technologies, Mitsogo Technologies, Mobiotics, yardi,

Right Answer:
Xcode is Apple's integrated development environment (IDE) for macOS used for developing software for iOS, macOS, watchOS, and tvOS. It provides tools for coding, debugging, and testing applications, as well as a user interface designer and a simulator for testing apps on different devices.

iOS, which stands for iPhone Operating System, is the mobile operating system developed by Apple Inc. It is the software that powers the iPhone and serves as the foundation for other Apple operating systems like iPadOS, watchOS, and tvOS. Unveiled in 2007 with the first-generation iPhone, iOS revolutionized the mobile industry with its user-friendly, touch-based interface, a stark contrast to the button-heavy phones of its time.

A cornerstone of iOS is its commitment to a “walled garden” ecosystem, where Apple tightly controls both the hardware and the software. This integration allows for a highly optimized and secure experience. Key features of the iOS platform include a gesture-driven user interface, which relies on multi-touch gestures like swiping and pinching; a strict sandboxing model that isolates apps to enhance security and privacy; and a seamless integration with other Apple services and devices through technologies like iCloud, AirDrop, and Handoff.

The App Store, introduced in 2008, is another defining feature of iOS. It created a thriving ecosystem for third-party developers, offering millions of applications for productivity, entertainment, and more. Apple’s rigorous review process for the App Store ensures a high level of app quality and security, providing users with a safe environment to download and use applications.

iOS is also known for its consistent and timely updates. Major versions are released annually, bringing new features, design changes, and performance improvements to a large portion of the user base. This consistency minimizes fragmentation, ensuring that most users are running a recent, secure version of the operating system. Over the years, iOS has introduced groundbreaking features like Siri, Apple’s voice-activated assistant, and Face ID for secure authentication. The platform’s continuous evolution has solidified its position as one of the world’s leading mobile operating systems, admired for its simplicity, security, and powerful user experience.

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