# Brusmaskin — Pocket groovebox & sampler

> Pocket groovebox & sampler (iPhone/iPad app by Mattias Ahlstrom.)

- Source: https://appshunter.io/ios/app/brusmaskin/id6795069855 (this page in markdown: same URL + `.md`)
- Developer: [Mattias Ahlstrom](https://appshunter.io/developer/1838316114)
- Category: Music
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 22 MB
- Languages: American English
- Released: 2026-07-29
- Data updated: 2026-09-04
- User reviews in markdown: https://appshunter.io/ios/app/brusmaskin/id6795069855/reviews.md

## What is Brusmaskin?

Brusmaskin is a pocket groovebox — an 8-track synthesizer, sampler and sequencer for making complete tracks wherever you are.

SEVEN SOUND ENGINES
FM synthesis with a subtractive filter stage, a raw mono synth with drive and wavefolding, a lush 7-voice supersaw, a dedicated drum synth with FM percussion, filtered noise and attack transients, a plucked string (Karplus–Strong) with a pick that changes every note, and GRAIN — a granular engine that plays any sample as a cloud. Plus a sampler with stereo samples, slicing, key-mapped chopping, non-destructive trim and a start offset for ghost notes. The same audio plays both ways — sampler or cloud — with zero copies.

RESAMPLE YOURSELF
Capture any track with one button — it keeps playing while the recording runs through its own private effects, so the take carries the filter, the drive and the track's own reverb and delay tail, in stereo. Then listen and choose what it becomes: a sample, a grain cloud sliced on the hits, or a playable kit where each note is one hit. Or record from the microphone, or GRAB the last 30 seconds of the master — the take you just played but forgot to record is still there.

DEEP MODULATION
Three envelopes and three LFOs per sound, each with three freely routable destinations — and every target lives on every engine. Vibrato on a sample, a moving noise filter on a drum, an LFO that rechops a break on every note, an envelope that scrubs a grain cloud through a field recording. HOLD, CURVE and END floors turn envelopes into drones.

DEEP STEP SEQUENCING
Per-step trig conditions, probability, ratchets with pitch rolls, swing, and patterns up to 128 steps with independent speed and length. An arpeggiator with chord pools, inversions and free-run mode. Sound locks put a different sound on any step, and per-step parameter offsets shape your sounds over time.

SONGS, NOT JUST LOOPS
Chain patterns into parts, phrases and full songs. Perform live in the performance view, mix with per-track faders, and glue everything together with chorus, delay and a rich plate reverb. Sidechain ducking built in.

HANDS ON
MIDI learn maps any knob, fader or button on your controller to sounds, mixer faders, mutes and solos — with soft takeover so nothing jumps. 576 factory presets cover every engine, and an INIT patch per engine gives you a clean starting point when you want to build from scratch.

YOURS
Projects and sample banks are stored in iCloud Drive as plain files you can see and back up. Scale-aware note entry, a built-in browser of vintage drum machine sample packs, and video import that pulls the audio straight out of a screen recording. No account, no subscription, and everything works completely offline.


## Version history (last 5 releases)

### 3.4 — 2026-08-27

JAM TO TAPE — press record and everything you hear is written to a cassette: knob rides, live pads, whole performances. STEMS mode writes ten files in one pass (master, eight tracks, FX) that sum back exactly. AirDrop the WAVs anywhere.

EVERY PARAMETER LOCKS — hold a step and turn any knob: envelopes, curves, every modulation route. All ~130 parameters, per step.

PATTERN DEFAULT — untouched steps follow the pattern's sound; change it once and they all follow. TRACK FOLLOW turns a whole track into one super-step driven by another track's notes.

SHAPE — draw ramps, curves and random spreads across a step selection in one modal.

JUMPS IN TIME — hold a phrase or part and press play: the switch waits for the bar, sample-exact. CUE gives taps the same patience.

FREE CHORDS STAY IN KEY — your voicing intact at home, in scale when the part transposes.

LFO PHASE IS ALIVE — works in every mode, rotates the wave live under your finger.

COMPACT — squeeze the silence out of a pattern without changing the sound.

LIVE RECORDING — count-in, forgiving quantize, velocity, and knob automation you hear immediately. Saving mid-performance no longer crackles.

ABLETON PUSH — plug in a Push 1, 2 or 3 and play the whole instrument.

Plus: loop points you can move while the sample plays, a properly reachable SELECT tab, and silent RANDOM/EUCLID steps fixed.

### 3.3 — 2026-08-15

GRAIN — a seventh engine. The sample plays as a cloud of small grains instead of a cursor: POS picks the spot, SPRAY scatters around it, SIZE sets the grain length, DENS the overlap, JITTER detunes every grain, WINDOW goes from soft washes to buzzy edges. On a sliced sample the cloud quantizes to your slice starts. 32 presets.

CAPTURE — one button on a track. The track records itself: nothing drops out, it keeps playing in the mix while the capture runs its signal through its own private effects, so the file has the filter, the drive and the track's own reverb and delay tail. It starts exactly where that track's loop starts, runs one loop, and keeps rolling until the sound has died away — the reverb decides the length. Then listen, and choose what it becomes: SAMPLE (the whole loop), GRAIN (a cloud, sliced on the hits) or KIT (sliced with keymap on, so each note plays one hit). Paused song? The gesture starts it, captures, and stops it again.

STEREO SAMPLES — the bank keeps both channels. The sampler and the grain cloud both read them, and PAN becomes a balance on a wide sound. Fold one with the new MONO flag when you want to place it at a point in the field instead — the flag belongs to the sound, so a clone can stay wide.

TUNING FIXED ON IPHONE — samples played a semitone and a half sharp. The bank is 44.1 kHz while the engine runs at the device's rate, and nothing bridged the two. This has been wrong since sampling was added, which means projects with samples now sound lower than you are used to on iPhone. That is the correct pitch.

PLUCK: DAMP AND CUT SEPARATED — routing an LFO to DAMP used to sweep the filter's cutoff as well. DAMP moves the string now, CUT moves the filter.

QUIETER MODULATION MENUS — targets an engine does not use are hidden instead of listed. They were selectable and did nothing.

### 3.2 — 2026-08-11

A NEW ENGINE: PLUCK — a real plucked string (Karplus-Strong). DECAY in time, endless drones, a pick that changes every note, piano-wire STIFF, and the original 1983 noise-drum mode. 32 presets.

ROUTES EVERYWHERE — three envelopes and three LFOs, each with three destinations. ENV C is free, HOLD and CURVE shape every envelope, and END floors turn sounds into drones.

EVERY TARGET LIVES — samples get real vibrato and per-note slice/start/length chops, drums get a moving noise filter and real FM modulation, and sends are targets for dub throws.

PRESETS KNOW THEIR OCTAVE — drums and basses land at C2, and your own presets remember the note they were saved on.

### 3.1 — 2026-08-09

3.1 — THE PLAY UPDATE

PLAY THE PADS — a new PDS view: twelve big pads that play the selected track's sound, scale-aware with ghost pads outside the key. The track's real step row sits on top — same gestures as the track view, settings panels included.

LIVE RECORDING — arm REC and everything you play lands on the step under the playhead: note, velocity from where your finger hits the pad, the track's sound. QUANT snaps to the grid or keeps your timing in the step's DELAY. A STEP mode builds lines one step at a time, no transport needed.

MIDI IN AND OUT — tracks 1–8 speak MIDI channels 1–8, channel 16 plays the selected track. Incoming notes record like pad hits; turn MIDI OUT on and the sequencer drives hardware synths through the "Brusmaskin" output. Works inside AUM too — the plugin now has a MIDI output port and an audio input.

RECORD YOUR OWN SAMPLES — + NEW in the sampler records from the microphone, a single track, or the MASTER mix. Threshold arming with pre-roll, and GRAB reaches back into a rolling buffer — the take you forgot to record is still there. Straight into the sample editor.

A METRONOME — Pen Click on the beat. ALWAYS or count-in only, with a proper count-in when you start playback with recording armed. Never printed to recordings or exports.

STEP LENGTH — a step can last 1–16 step-times and the pattern loops on the sum: build uneven, analog-sequencer timing out of durations instead of rests.

JUMP — when the playhead leaves a step it can jump: to any step, or a random one. Gate it with TIME LOGIC — loop three rounds, then jump — and empty steps work as silent jump markers. Loops inside loops, stutters, drunk walks.

RANDOM NOTES — a step can reroll its note on every pass: in the scale (never a wrong note), in semitones, or across a keymapped sample's slices — instant breakbeat confetti. DRUNK wanders ±1 from its last note instead, bouncing inside an octave.

VOICES — a track can hold up to three sounds at once. The track's default sound owns a protected voice that nothing else can cut, while the other sounds share the rest — a pad rings through the ticks, a ratchet roll keeps rolling under a melody.

CHORDS ON EVERY TRACK — the old one-chord-at-a-time limit is gone: every track stacks its chords at once, no matter how many are playing.

### 3.0 — 2026-08-06

THE PLUGIN UPDATE

BRUS IS A PLUGIN NOW — Brusmaskin loads as an AUv3 instrument in AUM, Logic, GarageBand and friends. The whole instrument — sequencer, sounds, sampler, projects — inside your session, on the host's clock: sample-accurate start, fractional tempo, and it follows seeks and loops.

TWELVE OUTPUTS — MAIN carries the mix, and any track can leave it for its own stereo bus (plus an FX return). Tap OUT on a mixer strip and that track goes dry to its own host channel — mix and effect it there instead. The choice is saved with the project.

SESSIONS REMEMBER — saving a host session saves your working state inside it. Reopen the session and Brus comes back exactly as it was — and it sounds even before you open the panel.

LIVE REC — arm REC and hold a parameter tile while the sequencer runs: whatever you set is written to the step playing right now, and you hear it on the ringing note as you move. Hold still to paint the value across every passing trig, record two parameters with two fingers, sweep to 0 and hold to erase.

COLOR THEMES — restyle the whole instrument: Paper, STHLM, Norrland, Kosmische, Motown and Tokyo change the track colors and the project palette together, each with its own night variant. Your saved project colors keep their slot in the new dress. BRUS > SYSTEM.

PROJECTS WEAR THEIR SOUND — every row in the project list shows its own waveform, rendered from the audio preview, plus BPM and age. Find your song by its shape.

OFFSETS GO ALL THE WAY — a step offset now spans the whole parameter range. Take the filter from wherever it sits down to zero or up to full — no matter where it starts.

PRESETS THAT TRAVEL — your presets are files now: they sync over iCloud, two devices merge their collections instead of overwriting each other, and they show up in the plugin too. SAVE PRESET also bakes the step's offsets in — the preset is what you hear on that step.

SAMPLES EVERYWHERE — the sample library lives in shared storage, so the plugin sees everything you collected in the app. BRUS > PROJECT now shows exactly what is stored where and what syncs.

FOLLOW KNOWS POLYMETER — with FOLLOW on and tracks of different lengths, every track pages with its own playhead instead of being dragged to the active track's page.

DUPLICATE WHAT YOU HEAR — DUPLICATE on the active project saves your working copy first, then forks it, samples included.

## More apps by Mattias Ahlstrom

- [First Five](https://appshunter.io/ios/app/first-five/id6752224724)

All apps by Mattias Ahlstrom: https://appshunter.io/developer/1838316114

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-04.*