I find it interesting that "Honeydue" is in the list, when there are multiple free apps already in existence such as Buxfer and Splitwise that have already been available for years. Both Buxfer and Splitwise serve the exact same functions as Honeydue (splitting bills/expenses with room mates and/or partners), and both of them are free to use. Sadly, neither app has found a way to be all that profitable after all thes…
My partner and I merged our finances when we moved to London as we both essentially started at zero here. We use pocketsmith[0] to manage and keep track of everything. It's fantastic and has completely changed the way I look at money. It has a great cashflow view and good forecasting. I now never look at our account balances, as I know, from the cashflow view, that we're definitely earning more than we spend. So now…
Since you didn't have cash transactions when adding you don't need too much security so there's lower friction. Further you reduce the amounts of transactions going on, while still retaining decently detailed logs. It also gave the option of solving things with cash when splitting with people from abroad who may not have the same access to easy money transfer.
Just to add some perspective.
I'll check out pocketsmith - it does sound kind of cool and I'm looking at the possibility of merging my finances with my partner soon-ish.