saver

/S EY1 V ER0/
noun
  1. 1

    One who saves.

    โ€œa saver of soulsโ€

  2. 2

    One who keeps savings more than usual.

    โ€œHe's a saver and she's a spender; you think the marriage would be doomed but he keeps them from going into bankruptcy and she makes sure they have a lot of fun.โ€

Source: https://en.wiktionary.org/wiki/saver