Design and develop application internals First
Has already been done and at what stage the project is. In this way the customer is always up to date, and if something is wrong, we can quickly discuss it and adjust the work. Stage 1. With a VPN, you protect sensitive data from the competition.
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Some countries restrict access to certain content. If you work in such an environment, a VPN will help you retain your audience. Entrepreneurs looking for passive income. VPN apps are in demand, and if they’re convenient, customers are willing to pay for access. There were a lot of bugs in the code, so the program often crash.
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For example, due to an authentication token, not all of the features had been update. Technical block: examples of development problems from the first team Backend: frequent duplication of code sections lack of a unit code style incorrect integration with the payment system lack of automat deployment to servers.
Frontend incorrect implementation
Of routing no animations for pop-up windows and view transitions impossibility of selecting the number of display lines on pages of different types of statistics Web version: optima code: a lot of repetitive code fragments, constants hard cod into the code, no OOP, interface and code responsible for the application logic are mix poor performance: no caching, requests to the server return the same data and are exec up several times in a row in different places of the application, multithread programming is not us, requests to the API are executor in the interface thread.
Delay when working with the interface reach 15 seconds security hole: app saves usernames and passwords and other confidential data in an open text file. Some requests to server return confidential data even with unauthoriz requests.
Mobile version: errors in logic
Of payment transactions duplicat if you are also confused about forum creation questions animation when loading some screens of the application different layouts for iPad and different iPhone models difficult resign of the application no localization of the application incorrect work of tokens for authorization processing of errors of return requests from the API not implement everywhere configuration files us to store data, which made it difficult to work with data selection, filtering, and sorting layout is not adapt for screens of different sizes Stage 2.
Discuss with client and clarify goal of project Following our research, we contact the client and discuss our results and work plan. While discussing, the client clarifi the technical task. Now we not only had to fix the errors of the first team, but to develop a more advanc version of the application.
Our project is a cross-platform
Application that can work with different sale lead operating systems. Step 3. Study best practices in market and choose solution Before starting development, we always study ready-made solutions. Consequently, our next step was research. This helps save the customer’s time: we don’t waste resources on knowingly inefficient solutions.
Instead, we cut off the excess and invest in what will help the client earn more. For example, to transfer the application from Android to iOS, the customer suggest using a converter. We studi it, found limitations in it, and began to think about other options. As a result, we chose Kotlin for Android and Android TV, Swift for iOS and macOS, and C# for Windows applications.
We studi different architectures
And code of ready-made applications. This helps to quickly select the best methods for solving the client’s problem. Stage 4. , we made a minimum viable product — an application that you can download and at least log into. To test the work under real conditions, we agre with the customer to offer free access to users, and they were warn that we were testing the application.
A week later, we realiz that there were no errors, and finaliz the application. For example, additional functions such as auto-connect at startup were add, and the design was updat. There were also some difficulties with the project. One of them was relat to integration with iOS. At first, some of the data was not always display correctly, for example, whether the user had really subscrib or whether the trial period was still valid.
This happen due to the App
Store’s buyer’s authentication methods. To fix the incorrect work, we perform several actions. One of them was to implement the «grace period» function: if the user cannot pay due to technical problems of the application, we don’t block access. The application is available, but we and the user receive a notification: the payment has not been receiv.
This help us to not lose customer loyalty — as they were not to blame for the bug — and gave us time to find the error and fix it. Results: we launch app on schule and it’s now in demand The app was launch in January 2021. It took us six months from first negotiations to launch in the App Store and on Google Play. During this time we releas two versions — the minimum viable product (MVP) and the full-flg one.
50k Number of times app was download from Google Play during first 3 months The app already has its own audience. By the beginning of April it had been download 50 thousand times from Google Play alone, and this is taking into account that there are dozens, if not hundrs, of VPN solutions. For us this means that users are satisfi with the set of functions and they are ready to work with the application.
