One of the few companies that focus clearly on app development and Their primary pillar is Quality and Transparency.
They have talented team members. They follow Scrum and engaged me on daily progress. From the second week of the engagement, I was able to test the product on my phone.

It's been 2 years now with DianApps and I am delighted with my decision to choose DianApps as Technology Partner.

We’ve had a fantastic experience working with Dian Apps to create Healthy Luxe app. They have become an extension of our team and they go above and beyond to support us with all things tech! They are responsive, efficient and incredible at what they do. We highly recommend the Dian Apps team.

Engaged, strived to understand our issues and business use cases.

Good communication and excellent dev staff. Team leaders and individual dev members communicate as needed on top of regularly scheduled weekly meetings. Team members are almost always available late into the night local time to answer questions. Different dev staff available to assist with different parts of the project, all managed by very capable project and dev managers. Overall, very impressed.
Future plans include increasing dev hours by a factor of 4 over the next 6 - 12 months. This alone should be all the recommendation anyone should need.