i got my bfp at 8 dpo around 4pm. i used wondfo and frer. both showed up positive but the frer wasnt as obvious as the wondfo. it was faint but i could see it, especially in the right angle. the wondfo showed up darker than the frer but wondfo took me about 1 min and a half to show up positive and the frer took about 2 minutes. overall, wondfo was much easier to distinguish at that time. i despised frer because it wasnt as reliable as in easy to read as the one that costed me less than a dollar.