It's an app that connects people who are helping each other to save money. It only helps getting track of the savings, it doesn't manage money.
Users decide how much they wanna save; how many people the want getting involved and the periodicity.
It will have in-app purchases.
Full explanation can be found on the flow document attached.
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How are you I am so interested in your project. I am very confident to deliver perfect result I hope to meet you to discuss more details. I would look forward to hearing from you. Kind regards. Wang