We’re implementing a small fix that’ll allow you round your number of shares. Actually it’s already implemented in the web app. And coming for mobile in one of the following releases.
When placing an order you will be able to input a number with high precision if that number + the number you already sums up to a whole number.
Example: You own 5.3456789 shares. You will be able to buy N + 0.6543211 shares or sell N + 0.3456789 shares.
Of course if you use pies you’ll have to get used to the long numbers 