Apps to download on my cell phone - Swiss trip

this is very similar to your similar question across the border.

In my Swiss library on my phone I also have

((By the way you haven't said iPhone, Windoze Phone or Android - they have dramatically different apps available in the different ecosystems - I do Android and iPhone and soon windoze - all my answers are based on iPhone at least iOS 9 ))

Zentralbahn - for the line between Luzern and Interlaken Ost via Meiringen and Brunig Pass, and Titlis

libero tickets - for the BLS

City Guide Luzern, Bern, Lugano Basel - from the official TI site, one available for each major city and for swimming and various other things

TCS Verkehr - to help with driving

TimeOut World - to help with entertainment

Swiss Hike - what it says on the tin

Swiss Events - what it says on the tin

Schilthorn Explore - for everything on that side of the valley

SBB Mobile - for trains throughout Switzerland

SBB My Station app - for loads of station specific information

SBB P+Rail - for working the Park and Rail system, paying for it with the phone - only in French, Italian and German

Vierwaldstättersee - also known in English as Lake Lucerne - provides off line gps navigation of the incredible lake and information about all the villages with docks. Includes timetables at all docking points.

There are others but those are the ones I use the most.

Grocery store apps:
Coop
Migros

They have several apps so install what you like but be sure to get the actual 'grocery store' apps.

Swisstopo
Google Maps (update before you leave and get some offline maps for your main areas saved offline 'just in case')
SBB (all Swiss train info)

Get the my switzerland city apps. Much cooler, and with current events and activities, than yoû would think.

Will think of others and post...

The Zurich airport app is not to be missed.