Given the challenges of manual contact tracing, many countries and public health authorities have turned toward digital contact tracing and exposure notification solutions in the fight to end the pandemic.

We tried to use the often praised MVP design pattern in a recent Android project and ... we're sold! In fact, we love it, and wanted to share the love! Model View Presenter (MVP) design pattern is a great way to decouple application code to simple components. Each component does one specific task, which makes them self contained, easy to reason about, and separately testable. The pattern is especially well suited for mobile development and is quite popular among Android developers. Let's look a

As product guys who’ve spent years in the Boston start-up community, we often get questions that center on how to structure the “perfect” mobile marketing stack. Questions like: * How do we do cross-channel marketing? * Some of our Marketing & Analytics tools seem redundant, do we need them all? * How do we build the “perfect” marketing stack? It’s natural to have these questions. Mobile is a fragmented market, filled with hundreds of vendors, each promising they can do it all. It’s confus

The Need After the 1.0 of your app has shipped it is time to start working on version 1.1. One thing you will want to do is install the app store version and the dev version on your phone. By default you will not be able to do this. The default Xcode project set-up assigns a single bundle ID for all builds of your app. Your phone only allows a single app with a particular bundle ID to be installed at a time. The Solution We want to set-up our project so that our development build and our rel

Any app of reasonable complexity has the need to synchronize and/or block thread execution until certain events have occurred. A lot of existing info on the internets references old or incorrect ways of locking/synchronizing. At Rocket we have almost completely standardized on Grand Central Dispatch (GCD) to accomplish our synchronization/locking. This consistent approach keeps things simple and easy to reason about. Here are several specific recipes for problems that we recently worked on.

At Rocket we have established coding style guides for all of the languages we work with. We wanted to share some of these guides and our rationale for having them. A good guide will make your code more readable and code reviews more pleasant. It will also promote good coding practices to everyone you work with, including new members of your team. Here is our Swift style guide. We'd love your feedback -- feel free to fork/modify etc. Swift Style Guide [https://github.com/rocketinsights/swift-s