Apparently it is 500 points in the DSi shop. I haven't checked it's availability in Canada yet.
Much like the M01 there is no sound design capability. That is a limiting factor (for my taste anyway). Creating and tweaking patches is what keeps me coming back to the DS-10 and a big part of why I love it. I can mess around with preset sounds on any old thing; the DS-10 remains special in my books.
Having said that, like the M01, I will probably get this app and have some fun with it.
Rhythm Core Alpha is a complete music sequencer and synthesizer for the Nintendo DSi console gaming system. It includes a a 12 track drum machine with 122 drum sounds, an 8 track MIDI-style sequencer with 166 instrument sounds, and a live solo mode where you can play along with the stylus. You can make up to 100 loops of up to 64 beats and then sequence them in the pattern mode. You can even change the key and scale of any loop block live using the +Control Pad buttons. http://www.rhythmcorealpha.com"
I think all these programs, from homebrew through M01 and the latest DSiWare offerings, prove one thing: There's definitely a market for music-making apps for the DS. I remember some of the reviews for DS-10 when it came out--what were they thinking? Neat, but who's going to buy it? (Same for the Tenori-On, for that matter, but that's another story.) Each has their own appeal; if you'd rather have a fairly extensive collection of preset sounds, the M01 is maybe the way to go. For using samples, maybe Nitrotracker. If you like fiddling with knobs and experimenting with sounds, DS-10(+) or Tonesynth (homebrew).
One drawback of the DSiWare titles is a fixed number of save slots, although I understand with Rytmik, that's quite extensive. At least with the cartridge-based apps, there are some solutions for lifting the save files from them (NDS Adaptor +, Datel Action Replay DSi, possibly some homebrew solutions as well.)
Kudos to the homebrew community, by the way--if there weren't apps like Nitrotracker to begin with, there may never have been a Korg DS-10.
What is it that you find difficult about Rhythm Core Alpha?
I tried to make it really simple: You tap on the grid and the drum beats come out! Drag on the note grid and there are the notes! Change key with the +Control Pad. Press Start and solo with the stylus.
It isn't completely lacking in synthesis as represented: you actually have an ADSR envelope control on the sound select screen. The new EU/UK/AU version has a super vibrato section too!
It doesn't do as elaborate synthesis as the DS-10, but I think it's superior in every other way. I mean... the DS-10 can't even do chords! A pattern longer than 16 beats? A solo that needs more than 2 octaves? DS-10 can't do that...
Also, DS-10 is rather more expensive than my little download.
I downloaded Rhythm Core Alpha a few days ago and while it doesn't have an interface that I like (everything on screen at once, and a slightly weird copy-and-paste feature) it seems like it has quite a bit more potential than Rytmik. I'm going to try and learn how to use it, assuming I can pull myself away from Korg, Rytmik, NanoLoop and Cubase.
Soft Egg, is Rhythm Core Beta in development? I have a heck of a lot of Nintendo Points left on my DSi, so I would download that in a heartbeat if it had any significant improvements.
I downloaded the software. Here's my first attempt at making sounds on Rhythm Core Alpha. It's pretty cool. Cluttered. But interesting. Lots of sounds. Doesn't sound the best, but work within limitations and something good will output. I don't know how to make new patterns yet... I will look into that soon. xD