Switch one off and it is only hidden: nothing you have marked is lost.

Most photos carry the place and the moment they were taken, inside the file. WayMark reads that, works out which summit each one was taken on, and shows you the answer before it files anything. Where there is no location but there is a date, it checks your own log instead — a photo from a day you already marked belongs to that hill. It all happens on this device — no picture and no location is sent anywhere.

Two things worth knowing. Phones often strip the location when a photo is shared to a web page — the date usually survives, which is what your log is then checked against. And HEIC photos, the iPhone default, cannot be read in a browser at all, so neither the place nor the date comes through; most phones hand over a JPEG instead, but not always, and exporting as JPEG keeps both.

Turn this on and WayMark writes every step of adding a photo to a panel on screen. Take a screenshot of it and send it over — a phone has no other way of showing what went wrong. Turn it off again when you are done.

Your marks, dates, notes and routes as text you can keep somewhere safe. Photos are kept with the app and are not included.

WayMark is a free, personal project run by Joe Sullivan in the UK. No adverts, no analytics, no tracking. Privacy, terms, cookies and credits.