Too many requests! You have made too many requests!! No more requests!!!
– How many times do you have to hear that before you get really angry?Amazon Chime API’s request throttling tested our patience like this. But all we ever wanted was to make a simple text chat app work! In this article, you’ll find out why Chime was so unkind to us, what we did to turn things around, and how you too can follow the path we forged.

Developing a web or mobile app gives a business great opportunities and provides benefits in the form of additional dividends and audience loyalty. Having a clear understanding of the end goals, it is essential to define the main functionality of the future application to achieve the business goals and effectively perform setting tasks.

Benefits for company, Darly Solutions

How to identify core functionalities for your web/mobile application?

How to identify core functionalities for your web/mobile application? Darly Solutions

Before developing an application, businesses must understand what features should be included in the finished product. The efficiency of the application itself and the speed of achieving the set KPIs depend on this. What may work for one company does not resonate with the business goals of other companies. In this list, we cover what you should consider when compiling a feature list:

1. Define your business goals 

What goals do you want to achieve with the app? Make a clear list of the problems your app will solve, what target audience will use it, and what preliminary results you expect.

2. Research the market and competitors

Analyze the market in your niche to understand what functionality your competitors already offer. Research and analyze their applications to understand what advantages they offer and disadvantages their products have. That will help you determine relevant features for your app to stand out in the market.

3. Make a preliminary list of features

Before development, list those features that will help you achieve your goals. Divide them into core and optional features. In the core features, list the ones without which your app won't be able to function efficiently and solve the users' problem. In the optional ones, list the ones which are not essential to the basic functionality but can add value and competitive advantage.

4. Prioritize features

Determine which features in the application are most important to achieve your initial goal. Prioritize and determine which features can be added later in later app versions. That will help you focus on developing the more essential components. 

5. Conduct user research

The research will help you understand the needs and preferences of your target audience. Conduct surveys, interviews, focus groups, or analysis of user behavior in your niche. Use this data to refine and tailor your feature list to your users' needs.

6. Create user scenarios

Develop different user scenarios to better understand how users will interact with your app and what features they need to achieve their goals. For example, define how users will sign in, log in, perform specific tasks, make purchases, or interact with other users.

Top-9 Core functionalities for every web/mobile application

Top-9 Core functionalities for every web/mobile application, Darly Solutions

Multi-Device Synchronization

It is a process in which different devices work together and exchange information so that the data and settings on all devices are the same or consistent.

When devices synchronize, they usually use the Internet to exchange data. For example, you might sync your smartphone with your laptop to update contacts, calendars, and photos on both devices. When you make changes on one device, those changes are automatically transferred to other devices so that all appliances have up-to-date information. 

This makes working on multiple devices as easy as possible, gives you a significant advantage in the app market, and guarantees more users.

A User-Friendly and Responsive Interface

In addition to a functional set, it is vital to think about a pleasant design and clear navigation for the user's enjoyable and convenient use of the application. In this way, interaction with the application is easy and effortless. 

The user-friendly interface has clear and easily accessible buttons and menus, well-organized information, and clear instructions. This allows you to perform the necessary tasks without unnecessary complications.

The responsive interface ensures that the system responds quickly to user actions. When you press a button or perform an action, the responsive interface responds instantly and without delay. Or when you scroll through a web page or type on the keyboard, the responsive interface displays changes instantly and smoothly, with no visible delays.

The success of an application is directly related to its loading speed and the attractiveness of the interface. This is what users look for when choosing a user-friendly app.

A Search Option

This feature allows you to find the information you want in the app or on a website. When you enter keywords or phrases related to what the user is looking for, the app scans its database or content to find relevant results.

The search option saves time and effort by helping to search for specific items or information the user is looking for instead of having to browse everything manually. This option is handy on significant marketplaces to search for a particular item.

Push notifications

Push notifications typically appear on the screen of any user's device in the form of small messages or icons, including text, images, or sounds. They are designed to get your attention and notify you of updates or social media activity.

They are convenient and essential because they help you stay informed and ensure you get all the important information. However, if the user receives too many notifications, they can become intrusive or distracting. Therefore, it is crucial to provide the ability to customize their settings, which the user will set independently according to their preferences.

Offline Capabilities

With offline access, users can browse the app's content even when the device is not connected to Wi-Fi or a mobile network. For example, you can view and edit documents, listen to music, or watch videos without the Internet.

It is often the case that you cannot connect to the Internet or have no network, for example, when traveling in regions with poor coverage or when saving data traffic. Therefore, this feature will be a great advantage for those users who want to use the application offline.

Analytics Tools

Analytics tools in a web or mobile app can track various user actions, such as app launches, page views, button clicks, interaction with interface elements, and other events.

Using this data, you can make informed decisions, make changes, optimize your app, and improve its functionality to meet user needs and increase the effectiveness of your app.


Security refers to the measures and mechanisms built into the application to protect data and keep users safe. This process includes data encryption, protection against unauthorized access, and user information storage in secure locations.

This is a basic but important feature that will not only keep each user's data secure and protected but will also increase trust and loyalty to your app.

Online Payments

Online payments allow you to purchase in online stores, pay bills for services, send money to others, and much more. It is convenient because the user can make payments at any time and from any place with Internet access. To do this, it is necessary to connect an electronic payment system through which the payment will take place. 

Due to the growing number of online stores, stores, and food delivery companies - the need to implement this function is increasing.


Integration refers to the creation of links and interactions between different software components. This allows them to exchange data, transfer information, and use each other's functionality. 

For example, suppose you have a hotel booking site. In that case, you can integrate it with maps and geolocation systems to offer users the nearest available hotels and show them on a map. Integrating various features and services into web and mobile apps makes the user experience easier and better. 

Integrations help create more useful and powerful apps, extend functionality, and enable easy data exchange with other systems or services.


Mobile and web apps allow users to access information, interact with others, shop, automate workflows, simplify daily activities, and more through a user-friendly interface and unique features. 

Which features you choose depends on your business, its needs, and the app's purpose. Everything is tailored individually. Combining all of the above features can be the perfect modern app to meet the needs of your customers. But if, for some reason, one of the items doesn't work for you, use something that will definitely increase the efficiency of your product.