Couples of r/india. Please suggest online joint accounts for me and my girlfriend.

As the title says, we are thinking of having a joint account which we can use for the common home expenses.

It is becoming difficult to track various common expenses now so we thought we could have a common account where we transfer a certain amount in the beginning of the month and use it peacefully.

Please suggest some easy to open(preferably online) joint bank accounts or apps which we both can access from our respective mobiles and pay for common stuff.