musescore.comは安全ですか？

This site uses a bait-and-switch tactic to gain access to users' credit card information. Like other online streaming scam sites, they tell the potential user "We will not charge you until the end of the free trial period." This is very deceptive and borderline illegal. Never give out your credit card information for any "free trial". See: *****

This is a VERY good site for anyone who loves to write, transpose, or transcribe music.  Musescore is the best free program money can't buy for your computer, iOS device, or any other means you wish to use for musical composition.  Their site, from my experience, has been completely malware-free, and there hasn't been any events that have caused me displeasure with the site.  In addition, the program is completely free of any harmful PUPs or anything of the like. It's also child-friendly, as the community here on the site is absolutely great, and you won't find any inappropriate content. I highly recommend that anyone with an interest in music check out the site and their program!