I also like Wolfram Alpha. It has all the data, isn’t just a calculator, so I can enter in English `GDP of USA divided by land area` and get an answer. And a graph. And automatic currency conversions.
> Not sure how much of it requires network.
The downside is that literally everything it does requires an internet connection. Even `3+7=`.
> Not sure how much of it requires network.
The downside is that literally everything it does requires an internet connection. Even `3+7=`.