Which iPhone anchor watch/alarm app.?

[TRUNDLETRUC]

I have been lucky enough to be given an iPhone and would like to use it as an anchor alarm. I have looked in the App Store and there are lots of different apps.
Can anyone give me some advice as to which is the best. I need just an anchor drag alarm that does not use too much battery and will allow sections of the the circle to be cut out for shore, quay etc.
Can anyone recommend a particular app?

 

[Spyro]

I tried quite a few on my Samsung tab but could never get them to alarm then tried Drag Queen.works fine and easy to use.

 

[martinaskey]

I've been using 'Anchor Alert' by Slimjim Software on my Android phone this year.
It works very well and has completely changed my ability to sleep at anchor !
Tried a couple of other apps but nothing like as well put together
Not sure if it is available for IPhone but worth a check
£10 for a phone app seemed expensive at first but it really is worth it.
M

 

[Skipper_Christoph]

+1 for the Drag Queen
although I'm not shure you can cut out sections.
Battery drain will be quite high regardless which app you are using, as the GPS chip is running all the time

 

[OldSkipp]

Anchor!

I tried a few apps, the one I use is Anchor! (https://itunes.apple.com/gb/app/anchor!/id661180281?mt=8&ign-mpt=uo%3D4)

Con: it is not free, but it's worth the 2 bucks.