We have created a very simple and convenient application where everyone can choose the musicians he or she is interested in, see on which venues they perform, compose a “playlist” of these venues and visit them during the festival.

A year later, pre-planned routes by partners appeared in the application, as well as the opportunity to share your route and your geolocation with friends so that on the festival day you can clearly see who and on what site spends time. And what's most important, the application works completely offline.

Application

Design

Development

Testing

Website and mobile application for the music festival of Yekaterinburg.

Ural Music Night is an international music festival held in Yekaterinburg since 2015. By tradition, it takes place on the last Friday of June. The peculiarity of the festival is that it takes place immediately at a variety of venues throughout the center of Yekaterinburg. Entrance to each of them is free. 

Doubletapp has been working with Ural Music Night since 2018. In April 18th, in less than 3 months before the festival, the organizers approached us with the idea of ​​creating a mobile application. We quickly began to work, thought through and developed native applications for two platforms (Android & IOS) based on the API of an existing site. 

The application proved to be in demand and we continued to work on it in 2019. In addition to developing the application, the festival management entrusted us with a complete redesign of the old site.

Project objective

Sergey

Anton

Dmitriy

Roman

Denis

Valeriya

Ivan

Artemiy

Fedor

Yekaterina

Aleksey

JavaScript

ReactJS

NodeJS

Python

Django

Kotlin

Swift

PostgreSQL

Website and mobile application for navigating the UMN festival.

Ural Music Night

After the successful launch of the mobile application, we began developing a new UMN site. We redrawn all pages from scratch in accordance with the corporate identity of the festival, re-worked through the entire structure of the site and added useful features that at that time were already implemented in our mobile application.

Similarly to the applications, partner routes for the lazy ones appeared on the site. In addition, we integrated a music magazine into the new site with the latest news and announcements of the city's music events. We also added an archive of previous festivals with attached articles and media materials and online broadcasts from the current festival for those who did not succeed in attending the event.

The local media repeatedly wrote about the application and the updated Ural Music Night website. In the App Store and Google Play Market ratings the application managed to get into the top charts for the first positions in the “entertainment” category both years on the festival day.

Site

We have created a mobile application that recognizes and visualizes the sounds of shots and the start signal at the start of the exercise, allowing you to analyze in detail each action of the athlete at any time from the beginning to the end.

You record exercise video on your phone, the application analyzes it, marks the sounds of shots and the sound of start signal on the timeline, counts the intervals between shots. Based on this information, you can understand what movements you spend the most time on.

You can also compare two videos: yourself with yourself or yourself with another athlete. Videos are synchronized by start signals, and on the timeline you can see a comparison of the speed of shots at different points in time.

    The final shooting analysis video can be saved in Full HD format.
  

Result

How it works?

Machine Learning

HitFactor Shots Analysis - an application for praktikal shooting training.

HitFactor Shots Analysis is a practice shooting training app. The most important thing in the praktikal shooting is the "hit factor" - the number of points scored divided by time. Therefore, it is important not only to shoot accurately, but also to do it as quickly as possible.

    At the beginning of 2018, the world praktikal shooting champions Alena Karelina and Roman Khalitov turned to our Doubletapp company. They set us the task of learning to recognize the sounds of shots and starting signals from the audio sequence in order to help athletes find weaknesses in their technique of perfoming the exercise, and also to compare themselves with stronger shooters.
    

Nikita

Keras

Tensorflow

A tool for improving your skills in praktikal shooting.

Hit Factor

We created a mobile application in 5 languages at once (English, German, Spanish, French and Italian). The platform has 11 courses for both children and adults, for those who have just begun to learn the language and for those who want to pull their knowledge to a more advanced level.

    387 categories and about 14,000 of the most used words, all in one small application.

The principle of learning is based on the technology of memorizing vocabulary through context or direct associations. Interval repetition method is a special technology that uses the mechanism of memorization and assimilation of information. Words repeated seven times at regular intervals fall into active long-term memory. After studying the topic, a repetition schedule will be composed for it. The application will warn you when the time comes for another repetition.

Learning English vocabulary from Alibra school courses via an effective repetition system.

Alibra School is a federal network of foreign language schools. The school trained 240 thousand students and 2.5 thousand companies. Training is conducted in 7 main languages: English, German, Spanish, Italian, French, Chinese and Russian. We are connected with the school by the warmest feelings, because our company began with the mobile application for Alibra school.

    Our task was to create a cross-platform mobile application for school students, within which they could learn English using the interval repetition system.

Viktor

Objective-C

Java

MongoDB

Applications for learning foreign languages for the federal network of schools ALIBRA SCHOOL.

Alibra School

Management

Online shop of branded clothing, footwear and accessories from world-famous designers

In 2017, we received a request from the owner of a clothing store. The request included several tasks:
      
      – Make a design of online store’s website;
      – Development of the administration panel.
      
      Moreover, a store administrator is supposed to have an actual list of the products in stock and unique size charts related to every single brand of clothing or shoes.

Elixir Gallery

We developed the administrative interface for the online store from scratch and made an adaptive layout of the site. Products are automatically uploaded to the Facebook shop. This provides the opportunity to subsequently add tags to product photos, linking them to products on Instagram. We set up the analytics and implemented several tools that save a store manager time in order processing.

One of the customer's desires was to integrate the website with the ERP system. The ERP system is a platform for automation of the internal processes in a store. It includes work with customers’ orders.
    
    For each order we created a personal card in the administration panel. The administrator can create and edit an order or a request, send a letter or an instant message, call a client, view the history of requests, create an invoice and arrange delivery.
    
    We built the product integration of the Facebook shop with the Instagram account. As a result, this tool increased sales via social networks by 5%.
    
    We connected the analytics and made it possible to create unique reports on the progress of different segments, improving the marketing strategy based on these data.
    
    One more thing that is worth mentioning – we integrated the delivery calculation tool into the online ordering process. We managed to do this by creating an algorithm that calculates the shipping cost at unique rates from several transport companies.
    
    Currently we are supporting the store website, as well as developing the administration panel by adding new functions and improving the existing ones.
    

Results

We completely took over the development of the application, and also gave the guys recommendations on responsive design and animations in mobile applications. As a result, we created an application that really fitted the Russian-speaking segment. For several months, Praktika counted about 11,000 users, and the conversion rate of the application was 10%.

The Praktika application features short 10-minute lessons and thematic courses with a professional guide. The application will teach the basics of meditation, as well as remind you of daily exercises, carefully save the statistics of your classes and synchronize it with Apple Health.
The application has a free introductory course for beginners and new thematic meditations are added with enviable frequency.

In 2019, our clients approached us with the idea of a mobile application for meditation. At the time of our acquaintance, they already had a business model and ready-made design layouts. According to the idea, the application was a collection of audio lessons that help to cope with anxiety, stress and attention deficit. “Daily meditation without esotericism” is the motto of the project at which our company happily began to work on.

Application for meditation, stress management and improving sleep. Without esotericism.

Praktika

We have created a mobile application for travel and recreation. In the application, you can book adventures from local guides, or become a guide yourself, and recruit people who want to spend an exciting weekend.

The resulting application features a list of adventures available for booking to any person. Adventures can be selected according to several parameters:
    — by the nearest date;
    — by activity: trekking, city tour, yoga retreat;
    — by area: South and North America, Africa and Asia.

    The user can search for adventures or can become a guide, creating their own unique routes and communities.

IOS development

Android development

A mobile application for searching and booking adventures from local guides.

An American startup contacted us in 2017. In this project, the client turned to us with a ready-made design and application for iOS. Main task for the studio was to develop the application for the Android and to publish it in the Google Play Store. Later we worked on the growing iOS application as well.

    The idea of the project was to create something that would help people go from online to offline and gain new experiences with new people in new places. The service is developing now, it has already grown into a media platform for the travel community.

Application for searching and booking adventures from local guides.

Adventure Aide

As a result, we created a mobile application that works offline and provides a full cycle of identifying and eliminating violations. Thanks to our convenient and simple interface, CheckOffice does not require special training for employees when using mobile applications.

The application allows you to assign checks in one click and fill out check lists. In the module for monitoring the implementation of tasks by employees there is a function of attaching “live photos” and audio files. In addition, the application records the start and end time of the audit, as well as the geolocation of employees, ensuring the transparency of audits. After the verification, the collected violations are formed into tasks to track their elimination.

CheckOffice is a service for automating checklists, identifying and eliminating violations in net companies of any size. Our task was to create an intuitively simple and clear native applications for iOS and Android to collect primary information and simplify the audit process. The ultimate goal is to monitor the dynamics of violations and control their elimination.

Service of digital checklists for mobile audit.

CheckOffice

Within the Hackathon, we have developed a mobile application for mentors and built a profile structure for the web version of a single portal. In addition to basic functionality, including a tutor profile, a calendar of meetings with the child, an archive of useful information and a news feed, we also provided the app with user-friendly tools that do make the life of the project’s participants much easier.

Among other things, we optimized processes by using machine learning, namely:

    — Our company created an intelligent chat-bot which is able to match a free-form question with a prepared answer from the knowledge base edited by an administrator; ⠀
  
    – We developed a model which is capable of showing the probability of volunteers’ participation in the project to mentors (in percent). This model is based on the 30 attributes compiled from the volunteers' questionnaires; ⠀
  
    – We worked out the model of automation of pair selection "mentor - child" on the basis of data filled in by volunteers in questionnaires.

Machine learning

In 2019 we took part in the Hackathon by Vkontakte once again. As one of the cases, we chose a mobile application for the charity called "Sun City" (Russian – «Солнечный город»). Our task was to implement a platform for "Mentoring" - one of the charity’s projects aimed at individual support of children in orphanages by volunteers of the foundation.

Portfolio