If you’re a collector – and let’s face it, we all are – of anything from books to stamps to video games, you’ve got to check out the Altova MyCollections app.

This is a free app available for Android, iOS, and Windows, and you can actually install it on all three concurrently. I love using this to, for example, enter collection info on my Windows laptop and access it on the go on my phone. It’s easy to share your collections with friends or make them public, and you can even list your items for sale or rent.

Check out this quick demo video to see how it works.

The best way to see how MyCollections works is to try it out yourself. Download it from your favorite app store using the links below.