Not really, the surveying profession was an early adopter of mobile technology - it lends itself to automatic data processing well because there is a lot of data and the calculations are really difficult but repetitive. Early on (in the 1980s) the platforms were programmable calculators and laptops, in the meantime all sorts of bespoke and general purpose hardware platforms have been used, so I don't doubt this chap's credentials. It would only have been recently that someone has bothered to mount an app like this on a cell phone (and I must admit I'm struggling to see it having much value on that type of platform).

It may surprise you but the world existed for several years before mummy bought you a smartphone!

May be he did a lot of overtime hours.

I bet its a team of 20 teenagers, who are halfway through their GCSE programing course and collectively have 20 years 'experience'.

Snakes was a mobile app in Nokia phones more than 25 years old who used to keep measuring ur garden without touching his tail :raised_hand:

/\ That

Now that is a helpful comment: just because something is free that does not mean it is of any use!

A certain group in society somewhat rather renown for nefarious goings on usually involving some left over tarmac offering to do your drive way on the cheap ?

I would be, even if I needed the GPS to measure my garden - alas not this year!

I do

Me! G** d**n it... I thought when I bought this (they told me) it was 0.71 acres. According to this app it is 0.55 !

Well, what you say is not quite right (about GPS). The absolute accuracy of a coordinate taken from a stand-alone receiver will be somewhat worse than you quote (one might expect the SE to be something around 5m at the 99% confidence level), but readings from contemporaneous measurements would be much better relative to each other. So, if one took measurements (say) around a field with the same instrument (a cell phone perhaps) in one session then most of the errors would be the same for all the measurements and therefore they would fit each other very well (probably to a matter of centimeters). The areas, lengths &c that one might compute from those measurements would be pretty precise, but the real world positioning on any of the individual measurements (or indeed the whole bundle taken together) would be inaccurate. Have I explained that well enough?
I do agree that it is pretty easy to work out areas from tape measurements, particularly for fairly rectangular plots, so it is hard to see the value of this app for the domestic user (which is probably why it is being given away free). Professional surveyors will always have a better tool than this one (that would have come free with the total station or GPS receiver he had bought), so the app would not be much use in that case. I suppose it might be useful to an estate agent - who could send the YTS boy out to a site with just a cell phone and from that could end up with a pretty good plot of a piece of land that could be uploaded to a mapping or imagery application - and so save himself £200 getting a bloke like me to survey it.
Unfortunately I don't have an Android cell phone to try this app out, but I see no reason why it would not do what it says on the box (there are lots of other applications for computers that will do this, some of which are free).

The area of the tennis court looks pretty accurate, no? I noticed the acc is 12.8ft in their diagram.

I saw it too, but wasn't sure :thumbsup:

Yes, £9 seems very steep! But it's a free app that I might also use one day.
Heat added :smile:

True. Although if the app really doesn't have adverts then I don't mind so much. There are competing apps on Google play, but the ad free ones are around the rrp price point of this app.