Gradually stir in pectin into apple and lemon juice in a medium saucepan until dissolved. Bring to a full rolling boil that cannot be stirred down, over medium high heat, stirring constantly. Remove from heat.
Stir in peaches and stir for 1 minute. Ladel jam into clean plastic containers leaving 1/2 inch headspace. Put on caps and let jam sit in fridge until set. Put in the freezer for up to 1 year or keep in the fridge for up to 3 weeks.