One of the reasons I got the watch! – Spendio - Spending Tracker for iPhone & Apple Watch Review

Very easily keeps track of my spending habits.. I just simply put in the amount spent in the watch and bam! There it is keeping tabs in the app. Expenditures are customizable by the icons and call them whatever you want. Buy the full version, as the free version is really restricted, but the full version is well worth it!
Review by Meeeeeelo on Spendio - Spending Tracker for iPhone & Apple Watch.