Ajuma – Enjoy the Sun Safely


Award-winning technology that helps you to find the right amount of sun


UI/UX Design
Android App Development
IOS App Development

DLR Health Challenge of the European Space Program Copernicus Award

Julian Meyer-Arnek photo

“What I find really special about Geniusee team is that whenever we have an urgent problem like on Friday when we noticed that you can't even add one user in the app with the cheap device, you are ready to help with a bug fix even Friday evening. Or ready to watch over the website Monday evening during our "Höhle der Löwen"-pitch . This is sooo incredibly helpful!”

Julian Meyer-Arnek

CTO at Ajuma

The Ajuma company was founded by a couple after the birth of their child. They wanted to protect their baby from the harmful effects of ultraviolet radiation sunburn and from potentially generated skin cancer in adulthood. That’s how they got the idea for the UV-Bodyguard, a smart UV-Assistant that warns on time before it’s too late.

Höhle der Löwen Show

“Geniusee provided an app and helped establish our backend and website solution that put Ajuma into a position to “go for the market” in Germany and neighboring countries in spring 2021. The launch of the product took part as part of the German TV show “Höhle der Löwen” (equivalent to “Shark Tank”) and was therefore causing an immense echo with ~100.000 unique visitors of the website,” – says Julian Meyer-Arnek.

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Looks familiar?
You take a walk along the beach, it’s cloudy, it’s windy, it’s chilly. Back home, looking into the mirror, you realize: oops, I’m red – I got a sunburn.

Annette has experienced this a couple of times, she’s quite sun-sensitive. Julian is a physicist and atmospheric scientist, he´s an expert on UV radiation.
When their little daughter was born, they wanted to protect their little girl from sunburn as well as possible. That is how they got the idea for the UV-Bodyguard, a smart UV-Assistant that warns on time before it’s too late.

How it works

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Connect the UV-Bodyguard via Bluetooth with your smartphone and measure your personal healthy UV dose all the time.

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Just enter your skin type and the sun protection factor (SPF) of your sunscreen. Here we go!

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You see how much % of your healthy UV dose you´ve already consumed, how long you can stay in the sun – and you get a warning on time before you get sunburned.

Why use the UV-Bodyguard?

  • You see your healthy UV dose in real time

  • You get a timely warning before you get sunburned

  • You can easily attach the UV-Bodyguard to your clothes or your gear – clip it, use velcro tape or put it on your wrist

  • The UV-Bodyguard is robust, it’s protected against splash water and sand

  • You get a UV forecast and can see your past UV tracks

  • Data privacy is important to us: The data stays on your smartphone, not in a cloud

  • The UV-Bodyguard is locally produced in Southern Germany

And even more! Our body needs a certain amount of sunlight to build Vitamin D. The UV-Bodyguard shows you how long you should stay in the sun to fill up your Vitamin D level in a simple way.

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Who's with us?

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Project timeline

  • Initial Research

Competitor analysis, analytics review, content audit, user interviews, surveys, user testing.

  • UX Design

Use cases, persona creation, storyboards, users flow, custom journey map, wireframes, prototype testing.

  • UI Design

Developing grid system, color scheme, fonts selection, creating and preparing icons and images for the app. Completing full UI Kits for future development.

  • MVP Development

Development with Swift and Kotlin mobile apps for Android and IOS in 6 months. QA testing and bug fixing. Following support.

Our Tasks

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Protect users from sunburns

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Develop a program for a smart device for IOS & Android

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Integration with a smart device

Award-winning technology that helps you to find the right amount of sun


DLR Health Challenge of the European Space Program Copernicus Award

Platform Map

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Geniusee provided over an app and helped establish backend and website solutions that put Ajuma into a position to “go for the market” in Germany and neighboring countries in spring 2021.



smart devices and happy clients in Germany, Austria, and Switzerland.



Your personal screen with the most important information - your UV-dose, time remaining to stay on the sun, and info about UV-level on your location right now.

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Information about what will be the UV-level in the nearest future brought to us by space technologies Copernicus.



Possibility to see your past results of the UV consumption.

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Individualize the app!
Fill in the main characteristics of your body to correctly calculate the desired dose of UV.
Select the color of your skin is light or dark and what SPF you use.

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Marina Rudenko photo

“It's a pleasure working with Annette and Julian. These are people who are sincerely in love with their project and do everything for its success. They are professionals in their field and have spared no effort to guide us into the details of their device and explain how it should work.”

Marina Rudenko

PM at Geniusee

the outcome

Geniusee released 2 mobile apps for Android and IOS in 2020. So far, Ajumna has sold over 12 000 smart devices in Germany, Austria and Switzerland. With a stable version built in Swift and Kotlin, the app is now easy to maintain and augment with new features. It’s also much easier for new developers to jump quickly into the project. Since we began our collaboration, Ajuma has raised new fundings from European startup accelerators such as the Business Incubation Programme from the European Space Agency (ESA) and from private investors.

The success of this project hinged on the following factors:

  • A client who clearly knows what they want to have in their application

  • Validating ideas and cooperating closely with the client, combined with the impressive performance delivered by a highly functional team

  • Creating well-written documentation and improving testing processes


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