How long does it take to add a check-in function to an App?

Native App, is coming online now, and the boss suddenly wants a check-in function (10 cents a day for check-in, 20 points for two consecutive days)
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how long will it take to achieve this? (I am Party A, so I want to know the time required.)

Mar.21,2021

can't be done in a day. The key is the front end


I have done one in 16 years, and it takes about a week from development, testing to launch.

several points where this time may be delayed:

  1. whether the points that are checked in and given away should be distinguished from those obtained from other sources (this may involve adjustments to the business data structure)
  2. some custom interactions of the check-in page (if you use web , some behaviors may need to be coordinated by the client, such as turning off webview , some custom dynamic effects, etc.)

the matter of a button in the front end hastens the back end.

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