CableCalc BS7671 4+

Yes the interface is nowhere near as nice as the photo shots
It does what is says to a degree but not a cheap software
And as with all these programs I've found errors,
Shop around

I've tried several cable calculation iOS apps that have been under the £10 mark and have found them all wanting in one way or another. Whilst I always check the cable sizes I use the old fashioned way with the big green book and the little osg book, I wanted a method I could use to quickly check my results and also to log the results so I had a form of proof that I had calculated the cable size required.

The cheaper apps where either limited in their choice of cables which meant they weren't much use all the time, had no means of easily printing or creating a PDF copy of the results, or where just plain rubbish and crashed all the time.

I then went looking for a desktop application of reasonable price, of which there are a very small handful, all PC based and again, all wanting in one area or another. For a start they all meant lugging a laptop around if you wanted the facility on site or when quoting, had a very old fashioned GUI, and some where just a convoluted spreadsheet which seemed to be cheating.

I then stumbled upon Castlines desktop software which of all the mid to high end software suites certainly seemed the most promising, if not some of the more expensive options. I'm currently considering their Level 2 desktop software (which will have to run on a Virtual PC on the iMac) but I still needed a portable option.

Which is where this app comes in. I spoke to one of their technical people and apparently this app does everything their Level 1 desktop software does apart from lacking a few of the more obscure cable types, and not producing the fuse blow time charts. Whilst this wasn't a deal breaker, I'm sure this is something they could bring to the app in a future update, after all, dropping £150 notes on an app is something of a gamble and one which I'm hoping will pay off after an update or two.

Yes it's by far and away the most successful cable calc app I've used by a long way, miles even, but they seriously need an update to help justify the cost.