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We make mobile applications, and much more.



We create tailor-made apps to help you grow your business. We help you make your projects become concrete. We work with you to offer the best user-experience possible to your clients and your audience, on iOS and Android.


Sometimes, you need an expert to join your team, on a daily basis and on an extended period of time. We're here to help, to work on a new project or maintain your existing ones.



Pierre-Olivier Simonard

Programming has been my passion for 20 years. Curious and rigorous, I love creating new apps, always improving what has been done for a better user experience and better performances. I am also a teacher at the University of Strasbourg.

Pierre Gougelet

I am an expert in images formats, with more than 25 years of experience in making softwares and apps. I am the creator of XnView, one of the most popular tools for your images. I also teach programming at Université de Reims.

XnConvert for Android

XnConvert is the best tool to handly quickly and simply batches of photos : Add a logo on every photos of an event ? Resize and then convert to another format ? Now it's easy :)
It's the Android version of XnConvert for desktop, made with Kotlin.



HYPOCAMâ„¢ is the ultimate App for black and white photography



GIFr is the best way to create GIFs. From your camera, a video, or images, create GIFs and share them with your friends on Facebook, Instagram, Giphy, ...



At IOAPPS, we love working with images, we enjoy creativity and we appreciate simplicity. This is why we made Lightable, an app to create your best photos and videos mashups. Lightable is like a swiss knife to edit a video, add text to it, apply filters on images, transform it ... Everything needed to unleash your creativity :)


GifMe !

Gif Me! is the best way to create and share short video in animated GIF or MP4. It's easy: capture a small moment with your built-in camera, and share it on social networks. You can apply an image filter too.


XnView MP

XnView MP is a powerful picture viewer, browser and converter for Windows, Mac and Linux. Our software can read more than 500 formats, change picture size, reduce picture file size and much more!



XnConvert is a powerful and free cross-platform batch image processor, allowing you to combine over 80 actions. Compatible with 500 images formats.