Some apps can but at the end of the day, you will have to save money and not only save money, but not to take the money out. Yes there are apps like acorns where you can invest your spare change into the stock market without you doing anything but buy the things that you were already buying. You must not take out the money once you invested the money.
Apps can motivate you to save more money and with apps today, it is easier than ever to invest and save. These types of apps were not around 10 years ago and today you must take advantage of these apps. Apps like acorns, Webull and some banking apps, you can buy, sell, invest and save right from your phone. With apps these days that allow you to link your debit or credit card to the app, it makes it easy to track and invest your money. In my personal opinion and I am not giving anyone advice on how to use or spend or invest or save their money so do our on research before using any apps or investing or saving any money.
But I would invest more money than I save but that is just I how I do things for me. Yes apps can help motivate you to save money but it will take will power not to spend that money since it’s on the app and you can take it out when you want to.