I've tried a few similar apps and this now the best of the lot since VAT support was added.

Simple to use and has the added benefit of displaying what the markup was from the margin, but for an application intended to make life simple and quick, the omission of any ability to accommodate any tax (VAT) makes this practically useless!? I suspect a young dev has built this with no real-world experience of how and why someone would use this.

Unlike the website you can see people's photographs without having to click on their profile - which is a plus. (They've spelt "you're" as "your" on one on the main titles in the profile run downs. Tut tut ! Altogether very useful and much preferred to the HTML site.

Works on my iPad as well.

While no apps provide all of the obvious basic requirements this one comes closest by also featuring VAT in a clear and easy layout. It would be nice for a future version to state what the markup was calculated at in the results area for completeness (and the full five stars).