There have long been cheap day tickets for unlimited travel on all Swiss transport, but they were only available for Half Fare Card holders, making it prohibitively expensive for people visiting one or two days a year. There was the "Happy Birthday" ticket for a while, but that no longer exists.
But there is now the "Saver Day Pass".
https://www.sbb.ch/en/travelcards-a...tzerland/1-day-travelpass/saver-day-pass.html
This is available for those without a Half Fare Card. Those with a Half Fare Card get a discount, although not 50%. The price varies by day, but is advertised as "from 52 CHF".
But there is now the "Saver Day Pass".
https://www.sbb.ch/en/travelcards-a...tzerland/1-day-travelpass/saver-day-pass.html
This is available for those without a Half Fare Card. Those with a Half Fare Card get a discount, although not 50%. The price varies by day, but is advertised as "from 52 CHF".