Worth the price?

I purchased this app for $2 (USD) while I was travelling in Asia. I like how I can keep track of multiple currencies but one can see all in the base currency you choose. Extremely easy to learn. It is easy on the eye too.

But I see several serious faults:
1) Although I can export the data by email, it arrives in all the different currencies in which I made my purchases, NOT in my base currency. Also, there are no spaces or thicker lines dividing weeks, months or even days--so the information is problematic to interpret.
2) No user forum, no instruction website, and it appears the developer is dead because he does not reply to any emails;
3) Not searchable--not by location or subject. Takes my ages to find specific expenditures
4) Not sortable--not by higher/lower expenditure nor category. How much did I spend in Hanoi? What were my top ten expenditures in May?
5) Week totals are divided by consecutive 14 days rather than months divided into four.
6) Cannot change text or symbols on categories

So easy and simple but feature poor.

Hermes the beekeeper about DailyCost － Expense Tracker, v1.8.1