It use to be that the app would just skip songs however this app stopped working altogether. I cannot play any songs and I cannot contact customer service. Im giving it 3 stars because it had worked at some point and perhaps it will start working again. If it does not I will be requesting a refund.

The truth is that I was quite sceptical about purchasing this app based on some of the reviews. However, I really wanted to mix and match some playlists from Yes!Fitness for my classes and the app was my only hope. I was also VERY impressed with the outstanding customer service and support that I got from Yes!Music. My emails were answered within hours and the rep offered to help me if I had any issues with the app. So... I purchased the app and it was very easy to use. I am not very good with technology so, if I could figure out how to put a playlist together, then anyone can. The songs flow seamlessly from one to the next. I highly recommend this app.

This app does NOT work with Apple Music. Can I get a refund?

It never states anywhere in the details that most Apple Music downloads will not work on it. The advantage of Apple Music is to reduce the cost of your music. Wasted money purchasing something that I have to now buy music in another way.

The app is tells you first to add song from your itune but actually doesn't let me do that. I have to pay $14 a month for their app to get music. What a waste of money paying for this app. Not helpful at all.

Decent basic tempo changer... adding songs should be easier.

As a fitness instructor I need music at different speeds. This app is THE best for that. I can take a cardio cd and lower the tempo to a muscle cd speed by sliding it down. If I want to add a cardio burst in a slower cd, I can slide it up and increase the tempo instantly! It's easy to use and totally convenient. When o have a question, the YesFitness people answer almost immediately! Great people, greet product! PThank you, YesFitnessMusic! You are the best!!!

PROS: Definitely better than some of the other tempo apps out there. Interface is simple enough to use and the big slider makes things easy when jogging or working out. The slider allows for a nice range of tempo change. The tempo percentage slider works perfectly. CONS: A little pricey for an app, and I'm not convinced it's worth it. BPM tempo change is a little buggy - like any BPM detector, there will be some songs where it can't pick up a beat, but there are times where it seems to be constantly adjusting and can't pick up obvious beats. Song list can't be shuffled, so you either have to manually add things in the order you'd like, or hope you like listening to playlists in the same order every time. Song list can't be edited once running - if you forget to add a song, you need to re-add the entire playlist rather than adding or removing an individual song. IMPROVEMENTS: It would be great if this app could read manually entered BPM info in the MP3's tags, rather than having to autodetect all the time, especially with some of the slower songs the beat detection doesn't work with. The playlist management needs some work: the ability to shuffle at the very least, and the ability to modify a playlist (i.e. add an additional song/remove a song) rather than having to start from the beginning each time would be nice. BOTTOM LINE: if you're looking for something that will change tempo by a certain %, maybe for a dance class or DJing, this app works well and is likely worth the little extra cost. If you're looking for something that will maintain a constant beat across songs for cycling or jogging or something, BPM detection is spotty and this app doesn't maintain a constant beat terribly well. The big slider interface could be really good for on-the-go adjustment, but the poor playlist management really inhibits it - you really need to plan your playlist ahead of time.

I love this app. It has allowed me to use my favourite music in different classes simply by adjusting the bpm. I would like to see a running time feature added so you know how much time you're working with after slowing or speeding up your music. Total time of playlist would be helpful.

I don't know what I'd do without this app. I set my running pace and it keeps me motivated through my run. Can't run without it!!! I do find it a bit hard to navigate but once I've got my play list set it's perfect.