Allow us to set goals to meet (Savings)

For example I want a phone, so I would want to create a plan called phone, and whenever I feel that this amount of money won’t be used for quite a while, I deposit into the savings plan, if I need that money, I’ll just withdraw from it. Then once I have reached the goal needed to buy the phone, there would be a notification telling me that. This would be extremely useful in many areas if you were to implement this!