How long does toffee apples keep?

for about 2weeks

depends on what type of wrapper you have it in. For example, foil, plastic wrap,towel and/or ziploc baggie.

If it is a shop bought frozen apple pie, it should have on the box a date for when it should be consumed by. Otherwise three months should be fine although this would be dependant on the star rating...

7 years

it usually takes about 1 hour or onwards to be brown