KR8—0
BY KEOIS
APP STORE
DRUM MACHINE FOR iOS

KR80
DRUM
MACHINE

Step sequencer. Four drum kits.
Up to 64 steps. Completely offline.
No account. No tracking. No internet.

OFFLINE NO ACCOUNT 16 – 64 STEPS 4 KITS MUTE / SOLO 40 – 220 BPM iPHONE + iPAD iOS 16+
DOWNLOAD ON THE APP STORE
BPM 124
▶ PLAY
■ STOP
CLEAR
RND
64
MAX STEPS
4
DRUM KITS
6
CHANNELS
0
NETWORK CALLS

BUILT FOR
PERFORMANCE

01

ROCK-SOLID TIMING

The audio engine runs on a dedicated thread via DispatchSourceTimer. UI interactions including scrolling, gestures, and layout cannot affect the clock. The tempo holds.

02

16 TO 64 STEPS

Set your pattern length to 16, 32, 48, or 64 steps. Navigate between pages of 16 with the page buttons while playback continues uninterrupted.

03

MUTE AND SOLO

Every channel has independent mute and solo controls. Solo multiple channels simultaneously. Rearrange your mix in real time without stopping the sequencer.

04

FOUR DRUM KITS

One synthesis-based kit — sounds generated from mathematical waveforms on-device. Three sample-based kits using recorded drums loaded from audio files.

05

PER-CHANNEL VOLUME

Independent volume control on every channel. Dial in your mix before you perform and leave it there. Sliders update in real time without interrupting the sequence.

06

AUDITION ANY SOUND

Tap any channel label to fire that sound immediately regardless of sequencer state. Useful for checking a kit before committing to it mid-session.

07

BPM 40 – 220

Full tempo range with nudge buttons for single-step adjustments and a slider for coarse changes. BPM updates reschedule the timer without stopping playback.

08

RANDOMIZE

Generates a probability-weighted random pattern across all channels. Biased toward musically useful placements — kick on 1 and 3, hat on the offbeats.

09

COMPLETELY OFFLINE

No network calls at any point. No analytics SDK, no crash reporter, no remote config. The app functions identically with no internet connection.

FOUR KITS.
ONE SEQUENCER.

AVAILABLE KITS
KIT 1 ACTIVE

Switch kits live during playback. Sample-based kits fall back to the synthesis engine if an audio file is not found.

SIX CHANNELS.
FULL CONTROL.

NO DATA.
NO NOISE.

01 / NETWORK

ZERO NETWORK CALLS

KR8-0 makes no network requests. No analytics, no crash reporters, no telemetry. It does not know if you have internet access and does not try to find out.

02 / ACCOUNT

NO ACCOUNT REQUIRED

No sign-in, no Apple ID, no email address. Open the app and use it. Nothing is collected and there is no server to collect it on.

03 / DATA

NO TRACKING

No ad SDKs, no usage tracking, no session recording. KR8-0 does not know how often you use it, what patterns you make, or what kit you prefer.

KR80

AVAILABLE ON THE APP STORE · BY KEOIS

DOWNLOAD ON THE APP STORE