JamJamz is a drum practice app that teaches real drumming on an electronic kit, one section at a time, using songs from your own Clone Hero library. Loop the part you are stuck on, slow it down without changing pitch, see how every hit lands, and let the tempo climb as you get it clean.
JamJamz is in private testing. Join the waitlist for early access.
You pick one small piece of a song you love and practice just that, slowly at first, with honest feedback on every hit. When it is clean, JamJamz speeds it up.
Choose your Clone Hero songs folder once. JamJamz reads it in place and remembers it.
A chorus, a fill or a few bars. Start slow, at 60 percent by default.
Every hit is timed against the real part and marked hit, early, late or missed.
After 3 clean passes the tempo steps up, until you can play it at 100 percent.
It turns a song into a lesson: loops, a tempo ladder, timing for every hit and every limb, and real drum notation.
Pick a section from the chart's markers, such as a chorus or a fill, or drag across the bars you want. JamJamz loops it with a count-in before every pass, so you can repeat one hard spot until it is clean instead of restarting the whole song.
More about section loopsJamJamz slows the loop without changing its pitch, starting at 60 percent by default. After 3 clean passes in a row it raises the tempo by 5 percent, step by step, until you reach full speed. You can change the start, the step, the target and the clean passes needed.
More about tempo ladderIt matches every hit from your kit to the nearest note in the chart, within 150 milliseconds. Each note is marked hit, early, late or missed, and stray hits are marked extra. Offsets are shown in real milliseconds, so they mean the same thing at any tempo.
More about hit-by-hit feedbackSwitch a loop to hands only or feet only, then put it back together. JamJamz judges only the part you chose, so you can lock in the kick pattern or the hand pattern on its own before playing everything at once.
More about hands and feetThe loop is drawn as standard drum notation with a moving playhead, and each note is colored by how you played it. Beside it runs a scrolling note highway, either a Rock Band style track or plain lanes, so you can read whichever suits you.
More about notation and highwayIt saves progress per song, difficulty and section: your best clean tempo, how many notes you played on time, and your timing per limb. Each section shows its best tempo, so you can see at a glance which parts are solid and which need work.
More about progress per sectionJamJamz will be a subscription with a free plan. You never pay for songs: you practice with the ones already in your library. Prices below are drafts.
Compare plans$0 forever
For learning the basics on your own songs.
$9 per month
For drummers practicing most days.
JamJamz is in private testing and not open to the public yet. Join the waitlist at jamjamz.io/waitlist and we will email you when early access opens. We invite people in small groups, and telling us which kit you play helps us decide who goes first.
JamJamz is a drum practice app that teaches real drumming on an electronic kit, one section at a time, using songs from your own Clone Hero library. It loops the part you pick, slows it down without changing pitch, judges every hit from your kit, and raises the tempo as you get it clean.
No. JamJamz is a teacher, not a game. There are no scores, combos, star power or leaderboards. It measures how close each hit lands to the real drum part, tells you which limb is early or late, and helps you build one section up to full speed.
You need songs in the Clone Hero folder format: a song.ini file plus a notes.mid, notes.chart or .sng drum chart and the audio. You do not need to run the game. JamJamz does not include or sell songs, and it is not affiliated with Clone Hero.
Yes. JamJamz reads your playing from an electronic kit connected over USB-MIDI, so it can time every hit precisely. Acoustic kits are not supported. The kit makes the drum sounds; JamJamz plays only the song audio, with the drum track muted or kept in.
Desktop Chrome and Edge. JamJamz needs Web MIDI to read your kit and the File System Access API to read your song folder, and those two browsers support both. Brave works after you enable its file system access flag. Safari, Firefox and phones are not supported.