I went into their simulator and asked it for the square root of 2. Answer: 1.414214 (yup, just 6dp). Then I asked for the square of that: Ans^2. Answer: 2.000001.
So it's not just that it's only displaying a small number of digits. Its actual working precision is really bad too.
For many applications it doesn't matter -- often just a few significant figures are more than enough. But I'd consider this level of inaccuracy to disqualify the calculator for serious use.
That's good, I suppose, but the fact that anything like this was ever in there kinda suggests something fundamentally wrong in their approach. But I haven't looked at the actual code, and maybe I'm being too pessimistic.
So it's not just that it's only displaying a small number of digits. Its actual working precision is really bad too.
For many applications it doesn't matter -- often just a few significant figures are more than enough. But I'd consider this level of inaccuracy to disqualify the calculator for serious use.