Pokemon-like anime with watches instead of Pokeballs

Could it be Spider Riders as per Cartoon - boy traps monsters into balls on a magical bracelet?

The protagonist of this series is a boy who finds his way into a hollow earth type secret world. A mysterious bracelet called a "Manacle" attaches itself to his wrist:

For those who are able to use them, these Manacles allow a person to summon and control a "Battle Spider":

The character list includes multiple companions including a brown-haired girl and a blue-haired boy.

One confounding factor is that their summoned creatures look distinctly spider-like, not like a fiery Geodude.