Hi,
There is no automated tool for that.
If you can export a CSV of your products data in Tienda, you can then edit it in Excel to change the column names following the format required by the HikaShop CSV import system and then import it via the menu Products->Import.
I invite you to create a product like you need in HikaShop via the interface and the export it in order to see how the CSV to import should look like.
I also invite you to read our documentation on CSV import:
www.hikashop.com/support/support/documen...hikashop-import.html