Here are some quotes from the 5 Star reviews for GrooveMaker FREE on AppStoreHQ:

Great freebie, will try the paid ones for sure 5.0 stars
By: Audio Nut
"This is SO much fun. I didn't think I'd like some of the styles that aren't usually my thing but I was pleasantly surprised. I need to dig in more, as I think there are probably things I'm missing out on. But it was so intuitive; I jumped right in and got it.

Get your groove on 5.0 stars
By: Teacee_90
"Very easy learning curve, speed up or slow don the temp in real time, mute and solo feature is great. If you like switch loop on tracks on the fly, this program is so much fun and great sounding samples."

Nice app! 5.0 stars
By: DJ Mike G!
"Great audio quality, great look, easy to use... I just hooked my iPhone into my car stereo and GrooveMaker free sounds insane.. Can't wait to hear the House version! I may DJ gigs right off my phone from now on! Keep bringing the new titles!!"

My iPhone just got even cooler! 5.0 stars
By: ResidentDJ
"Stylish and intuitive. This is probably the coolest thing I've ever seen a phone do. It's amazing what I was able to do in minutes. It's so easy to use, I'm hooked!"

Cool app!!! 5.0 stars
By: Melonsrblind430
"Already a user of IK, had to check out their new app. Impressive so far! The UI is clean and flows well. Multiple selections are easy for some sick breakdowns! Sounds r big and everything just syncs up nice. Maybe won't b producing my next track but could be great for ideas and demos or just rockin a party w ur iPhone!! No turntables? Fk it use your iPhone!!! Lol"

Makes it fun to make music 5.0 stars
By: NotYetADJ
"I love this little app! I don't have any DJ experience but love remixes, so this makes it super easy to put together some unique stuff. I have some other apps for music, but this one makes it really easy to make whole songs, and I love that I can send to my Mac and e-mail to friends. Makes me want to get into DJing!"

Grrooovy! 5.0 stars
By: AudioFella
"Awesome application from the folks at IK Multimedia."

Da-Bomb-Dot-Com 5.0 stars
By: Wicked-pissah Marisa
"This app is da-bomb-dot-com!! I'm not even a musician but was able to make some cool sounding sh#t."

GET THIS APP 5.0 stars
By: Lazyrider632
"This is by far one of the best apps that are out there, not only for music but for apps PERIOD. Great job guys for another great product."

Being a DJ was never easier! 5.0 stars
By: Gravelinee
"This app is so easy to use...anyone can DJ at any party with their iPhone now! The beats are great, and it's so easy to layer additionally bass and percussion tracks around them. Very impressive!"

Can't Stop! 5.0 stars
By: tavrick
"This app is insane! I can't keep my hands off of it, and I cant wait to see if I can export... I'm like a kid in a candy store right now. Of course, I had to buy an extra pack."

Amazing 5.0 stars
By: Charleshubular
"Take the tutorial if you are confused. I am officially obsessed. Give us a sale on the songs and I will buy them all!"

I'm a DJ now! 5.0 stars
By: TrueStarr
"With this app I am amazed at how talented I am!! I was able to create 2 fun tunes and I have a blast playing with it...I just wish I had more free time to really get into it! Maybe I should quit my day job."

Instant Inspiration 5.0 stars
By: RandyMan305til-I-die
"This is definitely one of the easiest loop based apps to figure out! I have tried a lot of the other music apps and none even compare to this one! Even if you know nothing about music production or sequencers you will be able to figure this one out!"

Woot! Woot! 5.0 stars
By: Wannabe DJ pro
"What!? This app a killer!! The sounds are sick, the interface is super easy to figure out and the fact you can share your work with others is crazy!! I can't wait to get more!!"

I like it. Pretty decent. 5.0 stars
By: Kent2194
"Loops and lines are pretty good for the free tracks. It's really easy to get started with and you can make some pretty good beats. So def. *****"

Killer bEaTs 5.0 stars
By: Ahhno
"This is by far my favorite free app. Wow amazing!!!!

Insanity 5.0 stars
By: Mechnohan
"I have never been addicted to app quite like this".

Easiest ever to sketch/build your idea 5.0 stars
By: tau_soh
"Love this product already!!

I like it so far 5.0 stars
By: Renchan
"I'll update when I learn more, damn good for a free app though, def worth it."

GREAT app! 5.0 stars
By: cueball73
"REALLY great app. super fun and easy to use. Totally makes my commute on the train worth living through ;-)"

Lokimon66! 5.0 stars
By: Spectacular App
"Go through the tutorial! There is a save option. Awesome App."

Learn how you can make music with GrooveMaker, click here.