qDSLRdashboard is an app that allows you to remote control a camera.
It works with Nikon and Canon DSLR cameras and with Sony mirrorless cameras.
I use it with an Android tablet.
It is stable and functional.
It’s cheap. It’s about 10$.
It connects with the camera both in “wireless” and “wired” modes.
I use it to control a Nikon D800 in photogrammetry surveying, connected with USB cable, extension cable and OTG adapter.
And i also work with a Sony Alfa 7 in wireless mode.
You can enable the live view and see what the camera is framing.
You can choose the focus mode and focus points.
You can control shutter speeds, apertures, ISO and exposure compensation.
You can really change a lot of settings (almost all of those accessible from the camera menu).
You can review the pictures taken.
You can record videos.
You can calculate hyperfocal distance according to sensor and lens.
You can choose where to save the images’ files: SD external card or device.
You just have to remember to turn on the camera before leaving!