PERFORMANCE RECORDER

PRESS THE
RED ONE.
THAT’S THE
MANUAL.

Plug in any USB-C class-compliant device and record dawless performances. Thirty-two-bit float in, one press out, on the phone already in your hand. Every pass makes a new take.

Download REK. on the App Store

$9.99unlimited recording

Free1 minute per take

ONE TIME · NO ACCOUNT
iPHONE · iOS 17 OR LATER · 12 MB

WHEN IT GOES WRONG A failed write keeps the take.
WHEN THE DISK IS FULL Low storage warns rather than refuses.
REK. recording a take in the dark appearance
The same screen in the light appearance
DARK↔ DRAG TO REVEALLIGHT

COMPATIBILITY — ONE CABLE

Whatever you play it on.
Capture the performance.

One USB-C cable from the box you are performing on to the phone in front of it. Groovebox, sampler, drum machine, interface — if it is class-compliant it arrives as an ordinary input, and the pass you just played is a take.

05 DEVICES SHOWN · NO DRIVERS · NO SETUP

SOURCE
Elektron Digitakt II groovebox, recorded into REK. over one USB-C cable Teenage Engineering EP-133 K.O. II sampler, recorded into REK. over one USB-C cable Ableton Move, recorded into REK. over one USB-C cable Akai MPC, recorded into REK. over one USB-C cable Roland SP-404 MKII sampler, recorded into REK. over one USB-C cable
REK. recording the incoming signal, dark appearance REK. recording the incoming signal, light appearance

All device photographs are the copyright of their respective owners and are shown here for compatibility reference only. REK. is not affiliated with, or endorsed by, any of the manufacturers pictured.

Main screen, ready to record

FIG. 01 — CAPTURE

32-bit float in.
No ceiling to hit.

The record path is 32-bit float by default, so there is no clipping ceiling on the way in. 44.1, 48 or 96 kHz. Stereo when the route offers it, and USB-C class-compliant interfaces arrive as ordinary inputs. GAIN moves ±12 dB and you can hear it. Uncompressed, always.

MONITORING HAS AN AUTO MODE
THAT STEPS ASIDE FOR PLAYBACK

FIG. 02 — LIBRARY & EXPORT

WAV, AIFF, AAC.
Bit-exact by default.

Every take sits in one list, named for when it happened. WAV follows the take’s own depth. Normalize to −0.1 dBFS is there and switched off, so an ordinary export is a bit-exact copy. The mixdown streams: an hour lands in 2.4 seconds at 15.9 MB.

Library of takes named by time

METRONOME

Click when you want it.

OFF, COUNT-IN, REC, or REC+PLAY. One or two bars in front, 40 to 240 BPM, synthesized clicks.

FILES

Named for when they happened.

The files in Files.app are the source of truth, not a database. Sidecars repair themselves if one goes missing.

THE DEVICE

Three appearances, ten accents.

Knobs stay where you left them. Core Haptics under the buttons. The speaker can be blown, playback only, and it sounds blown.

FIG. 03 — APPEARANCE

REPAINT
THE BOX

Ten accents and three appearances. The colour runs across the whole device — LCD, knobs and keys change with it, and the choice sticks between sessions.

Theme picker with ten accents

NO ACCOUNT.
NO CLOUD.
NO MENUS.

Takes live on the phone, in Files.app, where you can see them. There is no sign-in, no sync spinner, and nothing to restore. That is the entire policy.

Questions

Can I stack layers or overdub?

No. A pass always makes a new take — that is the whole model.

Is it a subscription?

No. One payment, and there is no account to subscribe with in the first place.

What happens if I record too hot?

The record path is 32-bit float by default, so there is no clipping ceiling on the way in. GAIN sets what you monitor, and the PK lamp latches so you know it happened.

Where are my recordings stored?

On the phone, in Files.app, where the files themselves are the source of truth. Takes are named for when they happened, and sidecars repair themselves.

What if the app dies mid-take, or the disk fills up?

A failed write keeps the take. Low storage warns rather than refuses.

Does it work with an audio interface?

Yes. USB-C class-compliant interfaces appear as ordinary inputs, at 44.1, 48 or 96 kHz, so you can record a dawless setup straight to the phone.

Can I get stems, or an MP3?

No. Export is WAV, AIFF or AAC, and WAV follows the take’s own depth.

Is there an iPad or Android version?

No. It is an iPhone app, sized for one hand and one thumb.

Main screen, ready to record

START
RECORDING.

Record is on the first screen when you open the app. There is nothing to set up first.

Download REK. on the App Store

$9.99unlimited recording

Free1 minute per take

ONE TIME · VoiceOver THROUGHOUT