Audio Object vs Arch Carrier Instrument Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Audio Object
This pocket-sized instrument turns your iPhone into a portable music creation studio. It features a four-track looper, a three-voice drum machine, and an eight-pad sampler with extensive editing capabilities. Seamlessly integrate with your Mac DAW via USB for professional workflows.
- Four-track looper with bar-quantized recording
- Three-voice drum machine click track
- Eight-pad sampler with EQ and varispeed
- Project save, load, and WAV stem export
- Stereo audio streaming to Mac DAWs via USB
- MIDI clock output over USB
- Records stereo from Core Audio interfaces
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Audio Object is a pocket-sized music instrument for iPhone. It looks and works like a small piece of hardware — a wooden body with an instrument panel on each face. Pull the wood edge and the body rotates to the next face. WHAT IT DOES - Four-track looper with bar-quantized recording and per-loop trim - Three-voice drum machine as the click track — kick, snare, hi-hat with a per-step accent grid - Eight-pad sampler with grid, auto, and tap chopping, two switchable banks, three-band EQ, varispeed tuning - Project save, load, and WAV stem export with tempo map - Streams audio to any Mac DAW over USB (Inter-Device Audio & MIDI) - Sends MIDI clock over USB — Ableton, Logic, and Bitwig lock transport to the phone - Records stereo from any Core Audio interface (iRig, Focusrite, MOTU, and others) HOW IT WORKS Six faces. Perform pads on one, sampler on another, click and time signature on a third, projects on the back, I/O on top, master on the bottom. No menus, no tabs. Every control lives on the body. The click track is not a metronome. It is a three-voice drum machine with per-step accents, subdivisions from quarter notes to swing, and time signatures from 3/4 to 12/8. Set up a kick-snare-hat pattern, press record, loop on the beat. The sampler holds eight pads across two banks. Record from the mic or load from Files. Chop by grid, by transient, or by tapping markers. Each pad carries a three-band EQ, varispeed pitch, and an amplitude envelope. All eight play polyphonically. Recording quantizes to the bar, the beat, or runs free. A dedicated loop-adjust face trims each loop to the sample — drag the region brackets, snap to the grid, hear the result while the brackets move. Plug the phone into a Mac over USB. Audio Object appears as an audio input and MIDI clock source. The DAW locks transport to the phone's tempo. No drivers, no setup. Plug a USB audio interface into the phone. Audio Object names the device on screen and records through its preamps at up to 48 kHz stereo. WHAT IS NEXT A synthesizer — bass, chord, and lead modes — is in development for the next major release.
Arch Carrier Instrument Lab
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Draw a shape. Tap it. Hear it ring. Arch Carrier turns drawn shapes into a playable physical modelling instrument. A ring, a plate and a tuning fork each have their own resonances. Change the outline, cut a hole or move your strike, and explore how the sound changes. PLAY AND SHAPE • Strike up to three resonant bodies by touch. • Add and subtract material without degrading untouched contours. • Watch sand trace nodal patterns, and tilt your device to move it. • Start from five seeds or save your own instruments. TUNE AND SEQUENCE • New shapes start at A3, 220 Hz. • Tune by frequency, semitone or octave, with note names and cents. • Audition a tuning or hear the natural model. • Place four mallets and set strength and modal focus for each step. • Choose seven mallet speeds, from 0.25× to 2×. • Record looping mallet motion, synchronized to each rhythm. MIDI PATHS • Add editable traces with independent MIDI note ranges and channels. • Each key selects a strike position; velocity sets its strength. • Play from a connected MIDI keyboard while Arch Carrier is in the foreground. • Show the paths when you need them, then hide the overlay while MIDI keeps playing. KEEP YOUR INSTRUMENT • Save shapes, tuning, rhythms, motion, tempo, damping, tone and MIDI mappings together. • Resume your last instrument without automatic playback. • Record stereo 24-bit WAV files and export them to Files or other apps. Free. No account, advertising or in-app purchases. Designed for iPhone and iPad.
Screenshots
Verdict
Audio Object and Arch Carrier Instrument Lab are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Audio Object | Arch Carrier Instrument Lab |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 12 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Green Rose Systems, LLC | Jeroen Rombouts |
In-app purchases
Audio Object
No in-app purchases
Arch Carrier Instrument Lab
No in-app purchases
Questions
Is Audio Object free?
Is Arch Carrier Instrument Lab free?
Do Audio Object or Arch Carrier Instrument Lab have ads?
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