Gravity Group

Full Stack mobile app developer

5.00/5 (4 Reviews)
About Gravity Group
Our company started in 2011 and currently there are 20+ team members including top Android and iOS developers, UI/UX designers, server developers, analysts, testers and certified project managers.
$25 - $49/hr
10 - 49
2011
Russia
Gravity Group
Full Stack mobile app developer
5.00/5 (4 Reviews)
2 Reviews
Client Reviews
Ivan kuzminReviewed 7 months ago
Very good performance
Role: Chief Technology Officer at World of tailed
Reviewed 7 months ago by Ivan kuzmin
Role: Chief Technology Officer at World of tailed
Very good performance
I am СТО at growing regional IT Company. I am responsible for all IT services including infrastructure and business transformation of the company.
We faced with rapidly growing business needs on goods for pets market at Perm and nearby regions. We needed to rapidly create IT infrastructure for internet sales and for couriers who will faster than competitors deliver goods for pets to clients. We needed to create mobile app and prepare server infrastructure, including interactive methods for it. We do not have any in-house mobile app or server developers, so we needed to outsource the entire project.
Goals were to develop mobile app and IT services for it, including server interaction methods. The mobile app should work on special android devices used by our couriers online and offline and be interconnected with corporate CRM system.

We asked for recommendations for our partners and also searched online. We searched vendor who have senior mobile and server developers who could done project in a 2-3 months. We made a list of 3 potential vendors and then took a series of evaluation meetings after which we chose this vendor.
Once we selected this vendor, we discussed our goals to make common vision and after that for about a week we had a very intensive requirement eliciting session. After most of requirements were elicited by the vendor they developed project plan and we signed time and material contract. After two weeks they introduced all of the design sketches. After sketches were approved the vendor developed final UI design for Android that was impressive and made us felt confident about usability. The product was created on iteration basis, every two week we got a new version of product and their analyst/project manager demonstrated it at our office and solicited feedback. Finally after about 2 months we got developed server and working proto-type of mobile app that was tested by some of our couriers. Finally after following two weeks they released the app.
Their company for this project offered us analyst/project manager, server developer, Android developers, UI/UX designer and tester. As far as we worked on time and material contract their team changed in amount depending on project needs.
The vendor provided very good analytics and we together with end users really got happy when we get final product. After we launched mobile app our couriers became much more effective, we shorten delivery time and increased clients’ satisfaction. This is why we think we attracted new clients, the growth was 40% in 3 months after we launched mobile app. We increased our delivery services time and quality and became much more competitive and looking at new regions for expansion. We got the mobile app and server methods within agreed timeline.
The analyst/project manager that we were assigned was very attentive to the details and easy to communicate. He demonstrated deliverables and always solicited feedback to make sure we get mobile app as we really needed.
They showed very good performance on the project, their analyst was very experienced and it possible would take much more time to done the project if this effort would not be like that. We noticed that they are also great at UX and development. We recommend this vendor and planning to continue our relationship.

What do you like most about the company?

They showed very good performance on the project, their analyst was very experienced and it possible would take much more time to done the project if this effort would not be like that. We noticed that they are also great at UX and development. We recommend this vendor and planning to continue our relationship

What they should improve on?

We noticed that their analyst was a project manager too, and may be it would be even more efficient that roles are shared between two different people

Rating breakdown
Quality
Reliability
Ability
Overall
Other details
Services:
Mobile App Development
Project Budget:
$10001 to $50000
Project Duration:
20 Weeks
Project Status:
Completed
Ivan PetrenkoReviewed 7 months ago
They are great at development speed and quality
Role: Director at E-Lux Net S.à r.l.
Reviewed 7 months ago by Ivan Petrenko
Role: Director at E-Lux Net S.à r.l.
They are great at development speed and quality
I am CEO at growing international IT company.
We were asked by our key customer to develop mobile application within very tight timeline. Mobile applications are not primary focus of our company and we had all our mobile developers already assigned on other projects. So we needed to outsource the entire mobile app development project.
Goals were to redesign older mobile app, fix some usability issues and update components it used to make sure it will be supported by followings versions of iOS and Android.
We searched online according with recommendations of mobile app development companies who could take and successfully finish the entire project. After we made a shortlist of potential vendors we took a series of interviews and asked them for preliminary estimation of cost and schedule of the project, and provide CV of specialists who potentially will work on the project. After comparison we selected this vendor with awesome advantage.
Once we selected this vendor, we had a series of discovery meetings to discuss our goals and objectives, and usability issues to be fixed. We agreed to sign up fix price contract because scope was well defined. Within three days the vendor introduced project team, project plan and even introduced some of the design sketches. After all of this the team has rapidly developed UX and UI design for Android and iOS that we also liked. The product was created on iteration basis and every 1 or 2 week we got a new version of product and their project manager demonstrated it via skype to get feedback. Finally after about 2,5 months we got redesigned and refactored mobile app for all platforms that full fitted all contract requirement and our expectations. Finally they released final app and published it at google play and app store.
Their company offered balanced team consisted from professional project manager, senior or even top iOS and Android developers, UI designer, analyst and tester.
After we delivered mobile app in a tight timeframe to our customer he was happy and we made our relationship more solid. The app have no bugs at all as hard as our or our customers testers tried to find them. We published the mobile app within agreed timeline. Redesigned app had many improvements that make our customer users more confident and happy.
The project manager that we were assigned was easy to communicate with and every 1 or 2 weeks he demonstrated deliverables to make sure we get mobile app as we initially expected. The vendor met budget and schedule requirements and even done some agreed with us improvements that were not signed in the contract.
They are professionals and no one question or notice we made were not forgotten and were all implemented in the app or we were explained by the vendor with better decision according to their experience in mobile apps. We noticed that they are great at development speed and quality. We strongly recommends them and would be glad to further partnership.

What do you like most about the company?

They are professionals and no one question or notice we made were not forgotten and were all implemented in the app or we were explained by the vendor with better decision according to their experience in mobile apps. We noticed that they are great at development speed and quality. We strongly recommends them and would be glad to further partnership

What they should improve on?

We very liked this vendor and we would be glad if they will offer more developers when contracting following more challenging projects

Rating breakdown
Quality
Reliability
Ability
Overall
Other details
Services:
App Designing (UI/UX)
Project Budget:
$10001 to $50000
Project Duration:
10 Weeks
Project Status:
Completed
Services

We are widely experienced in developing mobile apps and complicated high load solutions.  We provide maximum attention and any adaptation of development processes with needs of our clients. Our clients get maximum development speed due to team experience and lack of unnecessary bureaucracy. We also glad to offer low development cost by using only necessary resources. We work by T&M or Fix Price depending on our clients' needs. All of these guarantees us to provide the best service faster than anyone else could offer.

Focus
Service Focus
Portfolio
6 Portfolios
Mobile controller
The mobile application for gas maintenance engineers that automates prompt transmission data from the metering devices of the subscriber to the billing system; informing the subscriber about the accruals for the consumed gas; provides continuous data transfer for further ana...
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$10001 to $50000 16 weeks Industrial
Contact information
ru
Gravity Group
St. Stakhanovskaya, 54P, Office 204,, Perm, Perm 614066
Russia
+73422540302
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