Top 3 iOS Mobile App Databases

Depending on the scope of the project, the prerequisites for each mobile application will differ. For those looking to create a new mobile application, there may be certain requirements that need to be met. On the other hand, if the goal is to add extra features to an existing mobile application, other specific requirements may need to be addressed. With millions of daily users and frequent updates, it is likely that the current iOS database will require an upgrade in order to provide an optimal user experience.

Although the development of interactive software is essential, the utilisation of databases is just as important. Databases provide users with access to all the necessary data required to create an engaging and immersive experience with the application.

What exactly is a database?

A database is a collection of data that can be accessed. In most electronic devices, a database handles data.

For example, the contacts on your phone function as a database that you may use to store and alter contact information.

Databases are utilised by both mobile applications and desktop applications in order to facilitate the execution of applications and the management of user input. Application databases are essential for enabling applications to run smoothly and efficiently, as well as providing control over user input.

It is clear that the functionality of a mobile application is highly dependent on the data that is saved and processed by the program. For the app to operate as intended, it is necessary to perform various data transformations.

What is the best iOS app database? Criteria for selecting the greatest iOS app database

Data structure

The manner in which data is stored and retrieved has a direct bearing on its structure. Mobile applications are able to handle data stored in multiple formats. In order for online programs to operate, they must be connected to a server. Conversely, offline applications are designed to store all data locally on the device.

Mobile applications that are synchronised are able to save their data on connected mobile devices, allowing them to function in an offline mode. When the device is connected to the internet, the server is able to automatically update the data.

Size of data

The amount of data you need to store and access as essential application data is known as data size. This figure can vary depending on the type of data and the database’s capability to separate data among multiple file systems and servers.

As a result, you must choose the database while keeping the total volume of data generated by the software in mind at all times.

Scale and speed

Many databases are designed to accommodate applications that vary in their read and write requirements. For instance, MongoDB is often the better choice when dealing with large volumes of unstructured data, as it generally outperforms MySQL in such cases. However, when it comes to structured data, MySQL typically offers faster speeds.

A scalable design begins with selecting a database that can manage the I/O requirements of your program.

Modelling data

Prior to selecting a database, it is beneficial to practice data modelling as a method of clearly expressing business needs and data structures. Data modelling is an effective way to ensure that the appropriate database is chosen to meet the desired objectives.

Data modelling is advantageous if your app incorporates features such as search queries, reporting, and location-based services.

Uber, for instance, is heavily reliant on a number of different databases, such as MySQL and MongoDB. MongoDB serves as Uber’s content delivery network, while MySQL is used for the company’s business logic. The use of MongoDB makes it much easier to store large amounts of incoming data.

Data safety

When implementing synchronised and decentralised storage, it is imperative to ensure the secure access, transfer, and storage of data. This requires the utilisation of authentication measures to guarantee the authentication of users and data, as well as the implementation of security protocols to protect data both at rest and in motion.

Authentication should be versatile, offering support for standard, public and custom authentication sources. To ensure optimal functioning, many applications necessitate anonymous access. Furthermore, the database should enable users to exercise precise control over the data they are permitted to access, as well as offer the ability to adjust read and write access.

The 3 Best iOS App for Databases

  • SQLite database

SQLite is the most widely utilised database engine, and is a relational database management system (RDBMS). As opposed to a flat-file or hierarchical structure, SQLite’s data is stored in a tabular format.
The iOS database is naturally integrated into the program, allowing it to work as a stand-alone service. SQLite is a lightweight database as well.

Why should you use a SQLite database for iOS?

SQLite is an increasingly popular choice for developers due to its user-friendly design. Many find it to be the most straightforward database for their iOS applications, as its simplicity makes it easy to implement. As such, its utilisation has become widespread among the development community.

The software is compact and straightforward to incorporate into mobile phones, digital cameras, and other devices. There is no requirement for installation or configuration, making it effortless to use.

SQLite is extremely portable, which means it can run on virtually any platform, including Windows, macOS, Linux, Android, and iOS.

  • Realm Database

Realm, formerly known as MongoDB Realm, is an open-source object-oriented database management system that utilises C++ as its programming language, as opposed to SQLite which operates on the SQL database language. Developers are able to create object relationships within the database due to its object-oriented nature.

Realm is a formidable contender for the title of the premier iOS app database. It has been designed to incorporate a comprehensive range of mobile operating systems, including Android, iOS, Xamarin and React Native.

Why should you go with the Realm database for iOS?

The benefits of the Realm stem from its modernity. Realm outperforms SQLite.
Another essential feature is the realm’s scalability. Realm can handle a large number of users and a large amount of data.

Realm’s concise and clear developer documentation ensures that knowledge is accessible, facilitating more efficient development practices. This expedited development process has a positive impact on the overall development process.

  • Core Data

Core Data is an Apple-supported framework which can be leveraged to improve the user experience of an application in a variety of ways. It can be used to store and cache temporary data that can be used to improve the responsiveness of the application, as well as store permanent data so that users can access information even when they are offline. Additionally, Core Data can be used to define and structure data types and relationships between them, providing a powerful tool for developers to more easily organise and manage their application’s data.

Core Data is not a database, but rather a persistent framework. SQLite can be used as a database by Core Data.

A persistence framework is a piece of middleware that stores data in a database. They act as a barrier between data in a database and data in an app.

Why should you use Core Data?

It is often argued that Core Data is the most suitable database for Apple languages such as Swift and Objective-C, due to its affiliation with Apple. Nonetheless, there are additional features of Core Data which grant it a definitive advantage as the database for iOS applications.

Core Data offers improved data retrieval speeds when compared to SQLite, and it also provides built-in features that can reduce the amount of code that developers need to write by up to 70%. This greatly simplifies the development process and can save time and resources.


Due to the ever-evolving nature of mobile applications, it is necessary to upgrade the database in order to support the addition or modification of features. To ensure the right database is chosen for your mobile app, the following criteria should be considered: versatility. Ultimately, the aim is to select a database which is highly flexible and able to adapt to the changing needs of the mobile app.

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