Fixed: if you bought Eerie from the App Store, the app could still ask you to pay a second time inside the app. Eerie now unlocks from your App Store download, and no further purchase is needed. If you were charged twice, you can ask Apple for a refund of the in-app purchase at reportaproblem.apple.com.

Minor UI changes.

Two new instruments, and a new home screen to reach them from. THE FIELD METER A handheld mode. Carry the phone and watch the magnetic field live in microtesla, on a dial with the Earth's field marked so a reading means something rather than being a number on its own. It is not the same instrument as the meters sold for ghost hunting, and it says so. Those respond to the alternating field around mains wiring, which a phone cannot measure — but it is also why a mobile in someone's pocket sets them off, and nothing can set this one off. It also tells you whether you were moving, which no other handheld meter does. Walking a sensor towards metal raises the reading on any meter. Hold still and this one watches from where it settled, because a change measured with the phone stationary is worth more than one measured mid-sweep. THE TABLE WATCH Lay the phone on the table during a sitting and it measures tilt to a hundredth of a degree, with vibration alongside. The screen dims so it does not light the room, and brightens when the table moves. Before you begin it says what the usual explanation is — the ideomotor effect, small muscular movements made without being aware of making them. Everyone at the table can be honest and the table can still move. Eerie measures what the table did. It will never tell you what moved it. ALSO Eerie now opens on a chooser, so the room scan, the field meter and the table watch are each one tap away. Nothing new is saved anywhere. Both new modes keep their readings only while they are on screen.

Fixes a bug that could show the purchase screen again after a purchase had already gone through.