Not accurate
The values for each year’s benefits match SS for some years and not others. For example the benefits for age 62 to 67 within a few dollars of what SS says but way off for ages 68 to 70. The spousal benefit is sometimes accurate and sometimes not. Per SS when you apply for your benefits the first check happens the following month. When you use a January value the first check is in February. This is correct in the app. When you use a December value the app has the first check in December not January. This is incorrect.