Offline map for android able to save the users current gps position

Question

I'm searching for an android APP capable off showing a map, getting current GPS position and allowing the user (me) to save the position.

I'll explain my project: I need to place some items in a forest.

• There isn't any data connection (or really really really slow).
• I need to place these items in a regular pattern.
• I need to be able to find these items some months later.

What I don't need (I don't care if it has the features anyway): search or navigation functionalities. There is only forest anyway.

So what I need is a APP with following capabilities:

• Show me the map (ideally with satellite pictures).
• Download a specified region via WIFI connection.
• Get my GPS position.
• Save many GPS positions (the places where I've placed my items).
• Show the saved positions with a custom circle around it (something between 50m and 120m).
• Show my current position also with a circle around it (ideally in a different colour, but could be the same).

If this kind of tool doesn't exist I will have to write it on my own, but it seems like a lot of work so I'd prefer to use something existing.

Answer 1

MAPS.ME seems to fit almost all your needs, except it doesn't show saved locations with circles, but with 'thumbtacks' (see image). Its features are listed here: maps.me/en/features
Another drawback may affect you: it is not a lightweight app. Besides the offline map data consumes a lot of space (its ok, without satellite pics too), the application also needs circa 80-90 MB on your device, for one this can be a problem.
It also supports exporting/importing saved locations from/to KML and KMZ, thus your saved locations can be used/edited outside the app if you would need it (eg. sharing with others).