推荐理由：《Darts Practice 20》是一款适用于苹果系统的生活类软件APP。Darts Practice ②⓪ application analyses your performance at ②⓪ and calculates variations in horizontal and vertical axes. The aim is to hit maximum ②⓪ in ①⓪⓪ darts. Most of the players prefer this practice routine but only keep total score. This application keeps statistics and variances in addition to score which might be important to pin point mistakes.《Darts Practice 20》大小18.8 MB，在本站深受5468位玩家喜爱和下载。要找等，赶紧下载到手机吧。
- Practice Boxes are only available for ①②, ⑤, ②⓪, ①, ①⑧ regions in \Practice\ page. Any other hit should be marked with outside box. Application uses entered data to calculate up/down and left/right drifts from triple ②⓪ and amount of variation in horizontal and vertical axes. Although hits to small and big pie at ②⓪ are the same in score, they make difference in variation. Therefore, user should enter practice data to corresponding regions properly to make calculations reliable.
- Performance Basic statistics are listed in this page such as number of triples, ①⑧⓪s, ①④⓪s, ①⓪⓪s, etc. Besides that statistical information, darts distribution map represents number of hits to each region with color code.
- Analysis Variations of darts in horizontal and vertical axes are calculated in this page. Comment section is the summary of calculations to give an idea about drifts from triple ②⓪. In addition to drifts, variance is also calculated in both axes. Maximum variance is ①⓪.
- Help Basic explanations of the application are described in this page
