It wasnt more about solving a $ issue as to morphing their interpersonal behavior over a tab between sisters... (and my personal friction) ((have you met any sisters who are both close and highly successful in different fields)) - sometimes, you just need to leave the room... this was my method of exiting the room of financial "settle up" types of comments - and I had the mortar of dog pics.
So, yeah - but micro tools are a thing.
> For example, your use case sounds like the ideal scenario for <XYZ>
That’s till some product manager decides they want metrics to go up, and the app starts spamming you notifications multiple times a day, or tries to shove in your face unnecessary financial products, and starts selling your transaction data with the hope of increasing monetization to keep their overstaffed teams…
A home-cooked app from someone you know/trust seems much nicer than that.
For example, your use case sounds like the ideal scenario for Settle Up. Me and my 2 closest friends have a running group where we annotate expenses and there's always a clear picture of who owes what amount and for what reasons.
Of course, tiny customizations like a dog's picture per month, are not possible to do with a 3rd party app :-)