Citește în română

Free App for NGO - Internship Program 2019

This year we decided to start helping organizations worldwide. Each summer, during our 2-months internship program we will focus on developing an app for an NGO, according to their needs. Our interns will have the opportunity to learn teamwork and software development skills on a real project, with our guidance.

We will start the internships program in summer and it will last 2 months during which our team will teach the interns to develop an app. If your organization is in need of an app, feel free to get in touch with us and let us know more about the app you need.

Registrations open soon, stay tuned!

About us

Here at Cobalt Sign, we are developing native mobile apps for iOS, Android and Windows. The one sentence that defines us and our work looks like this: “Don’t stop until you’re proud”. As it states, we are always focusing on developing beautiful & quality mobile applications that we are proud of, both for our clients and for ourselves.

One of our dear apps is Ready Set Holiday, a travel preparation app which has reached 1.8 million downloads so far and a 4.5-star rating on the stores.

Giving back

We love sharing our passion and knowledge and giving back to the community. Since 2012, we’ve created a couple of pro bono mobile apps for our city and started a free mobile app development course for students, called Hello App (formerly Mobile Summer).

If you are part of an NGO or city project and need a mobile app, don’t hesitate to write to us, we’d love to help. Below is our email, drop us a line and we’ll get back to you.

I need an app

Our contribution so far

Pro bono apps for Timișoara
Hello App editions
Hello App participants
Projects developed at Hello App
Hours invested in pro bono work
Stray cats and dogs saved

Pro bono apps for Timișoara

Plai Festival Apps


We first developed the official iPhone & Android apps for PLAI Festival in 2013 as part of our pro bono initiative. Since then, we updated them each year to include new design elements and fit the event’s schedule.

This year, we redesigned the PLAI Festival apps, and now they have a fresh and minimalist design, according to the new design style of the festival. They have a simplified tab navigation and contain useful information about the venue, partners, cultural events, tickets and most importantly, the daily schedule.

Since 2014 we are organizing free app development sessions for programming savvy students from Timișoara. It all started as a way to share our passions and to give back and grow the mobile developers’ community. Through these coding sessions, students can learn new technologies and implement their own app ideas.

Our goal is to help them understand the basics of programming and encourage teamwork and creativity, everything in a cozy, informal and friendly environment. The students get a taste of real-life app development, learn to implement their own ideas and at the end of the event, their projects get published on the app store.

Find out more about our initiative on or on our Facebook page.

Mobile Summer 4.0 - Apps for our city

Last year we organized the 4th edition of our event. Its structure was a bit different, we made apps for our city, Timișoara, in collaboration with 3 NGOs: Alergotura, FITT Timișoara and Plai Association. We held 6 meetings between June 24 & July 5, where both the participants and mentors worked on these apps. Read more about how Mobile Summer 4.0 was and check out the apps below.

Read here


Mobile Summer apps---alergotura---despre-alergotura[1]
Mobile Summer apps---alergotura---evenimente[1]
Mobile Summer apps ---alergotura---home[1]

TIMEvents 2020

Mobile Summer apps---timevents-2020---eveniment-1[1]
Mobile Summer apps---timevents-2020---despre-MS[1]
Mobile Summer apps---timevents-2020---despre-tm-2020[1]


Mobile Summer apps---plai---despre-plai[1]
Mobile Summer apps---plai---evenimente[1]
Mobile Summer apps---plai---eveniment1[1]

Get in touch if you need an app!

We want to achieve as much as we can through Hello App so if you are representing an organization or project from Timișoara with ecological, cultural or artistic matter don’t hesitate to contact us. Write us an email and help us understand the app you need and we’ll contact you.

We are always happy to help and to hear your ideas!