Lend, don't buy.

What you borrow doesn't need to be bought.
A drill is used for three hours in its life. Those hours can be spread across five homes.
If we lend less than we'd like, it's often the fear of forgetting: who has what, and since when.
The notebook takes that fear away. It logs who, what and until when, and reminds you before it's due.
The WhatsApp notes keep things clear between friends, without anyone having to chase.
No account, no server: your data stays on your phone.