Welcome to the social, collaborative and circular economy!

Before you buy, look for what you want in the application and it is possible that a friend or family member can lend it to you.

Easily keep an inventory of your stuff by putting it in "virtual boxes" and sharing those boxes with your friends and family. This is more easily understood with a practical example: take a photo of a book, give it a name and description, label it as a book and put it in a "virtual box" called "living room" and another called "family", share the virtual box through any means (chat, email, etc.). The people you have shared it with will be able to see the book you have and ask you for it.

And of course, they will be able to share their things with you and before buying anything, you will be able to look for it among what people have shared with you and ask that person to lend it to you. You will be saving money! The definitive example comes from a study that motivated this application: in the United States there are 80 million domestic drills, with an average use of 13 minutes in their entire useful life. Do we really need to have that much drill? Wouldn't it be better if someone had a drill, could easily lend it to family and friends? With CajApp you can do it.

How many books do you have at home that you've already read and know you won't read again? Give them a second life (and a third and fourth) by leaving it to people close to you. Don't you know what to read? Look in the shared books of your friends for one that interests you and ask for it!

Plus, CajApp lets you know who you've lent to and when and, of course, what things you've borrowed and since when. No more "losing" things because you've left them to someone but it's been so long that you can't remember.

If you belong to a club or association, keep an inventory of the objects and share it with the members. You can share the same account among several people who act as administrators and manage who borrow the objects.

Install CajApp now and save money, improve your social relationships and do your bit to save the planet consuming less resources.

CajApp is totally free.

What’s New

Version 1.31

New visual UI.
Several optimizations and bugs fixed.


89.6 MB

Requires iOS 12.1 or later. Compatible with iPhone, iPad, and iPod touch.

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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