Partner adds £50 to the joint account. What if you could just hit a button to match that top up? Saves having to go through the payment screens and set up a payment for an equal amount.
There’s a button you can tap to transfer money to your joint account. Tap, input amount, done.
Hey, yeah that’s how I do it currently. Just could be nice just to have a button you can tap to immediately match a contribution to a joint account from your personal account, or your primary top up method.
Ah ok no worries 
We have a joint account and I can’t say we would need this, but maybe we do and I’m just not understanding its use.
Have you got a example to help me understand why your partner would keep adding bits of money to your joint account that you then need to match?