godsend

godsend：a very helpful or valuable event, person, or thing

sb./sth. is a godsend for or to…

1.With her strong work ethic and can-do attitude, Sherry is a godsend for Phenomenal English.

2.American Accent Training is a real godsend for anyone seeking to reduce their（his or her） accent.

3.Children's television is booming, which is a godsend to some parents and a growing worry for others.

翻译： 

对平摊账单来说，微信支付是个不可多得的好工具。 

Wechat Pay is a real godsend for sharing bill equally.

参考翻译: When it comes to splitting bill, Wechat Pay is a godsend.

场景：对于没有时间去健身房锻炼的人来说，keep  是一个很有用的在家健身的软件。

造句：Keep  is a godsend for those who work  out at home .