Case Study: How We Built a Cryptocurrency Price Tracker App criptoTickr

In this article, we'll tell you about how we developed an app that allows users both track the exchange rates of all popular cryptocurrencies and be aware of the news about them.

Our client came to us with the purpose to create an app that is able to track cryptocurrency rates. After the market analysis, he came to the conclusion that Android dominates in this niche with hundreds of advanced apps, while iOS has a relatively small number of solutions with certain limitations in functionality. That's how the decision for iOS app development was taken.

The cryptoTickr app is capable of tracking rates of any popular cryptocurrencies, as well as give it's users an opportunity to watch for their crypto portfolios.

The app has an easy-to-use and intuitive interface. Let's consider the main features of cryptoTickr in details.

The home screen contains the preset list of the most popular cryptocurrencies. On this screen, users are able to see the price changes by hours (1h, 24h, 7h), as well as track the increase or decrease of price on a certain cryptocurrency in percents or switch it to dollars and vice versa. In case a user hasn't found the cryptocurrency he or she wants to see on the home screen, it's possible to add one by tapping on 'Add to watchlist'.

By the way, if to tap on a currency from the home screen, a user gets to the section with charts and news.

In this section, users can track their profit from purchasing certain cryptocurrency. They're able to enter the price for which it was bought, as well as the number of coins they bought. In turn, the app will calculate how much money the user spent and gained in percentage terms.

This section shows the list of cryptocurrencies that went up and down in value most of all. Users can track these changes by the hour.

Alarm allows users to set an alert that notifies them as soon as the chosen cryptocurrency will go above, below or equal to the entered price value.

Any project in our company starts from estimation and planning stages to let our customers know how much time the development will take, as well as how much money it will cost.

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Platform: iOS Programming languages: Swift, Node.js Third-party services: CoinMarketCap

Since our customer wanted to cover the lack of crypto tracking apps on iOS, the project was focused only on this platform. Respectively, Swift was chosen as the main language for mobile development, while Node.js served as the language for backend development. In total, in this project took part two developers -- 1 iOS developer and 1 backend developer.

One of the main tasks of criptoTickr is to allow it's customers to track cryptocurrency prices that are constantly changing. That's why we needed a stable and reliable solution that could cover our needs of getting the latest and most accurate data. This solution was the CoinMarketCap API.

As I've already mentioned, we had some difficulties connected with this API. The point is, none of the APIs we've considered for this project weren't able to cover all our needs. That's why except for dealing with API we had to write a parser that took some extra time.

The software testing is an integral part of any development process. It's barely possible to create a top-notch product without testing it on the presence of bugs and other issues. Our QA engineers wrote several scripts to automate the testing process that allowed us to reach the best efficiency and correct bugs before the release.

This project was quite interesting and we did our best to satisfy the requirements of our customer and provide him with the top-notch product. In general, the process of development took us 6 weeks.

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