Comparison

Audio Object vs Master

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

Master

Instantly transform your audio into studio-quality sound using advanced AI. Upload your track and receive a professionally mastered, polished result in seconds. Ideal for artists, producers, and creators seeking high-quality audio without complex tools.

Highlights
  • Instant AI-powered mastering
  • Studio-quality audio results
  • Fast processing (under 30 seconds)
  • High-quality audio downloads
  • Simple, intuitive interface
  • Upload audio in a few taps
Features
Read full description

Instant Music Mastering Transform your music into studio-quality audio in seconds. Simply upload your track, and our advanced AI automatically analyzes, balances, and masters your audio to deliver a polished, professional sound. Whether you're an independent artist, producer, podcaster, or content creator, you can achieve high-quality results without expensive equipment or complex software. Features: Upload your audio in just a few taps. AI-powered mastering with professional-quality results. Fast processing—most tracks are ready in under 30 seconds. Download your mastered track in high-quality audio. Simple, intuitive interface designed for creators of all experience levels. Perfect your sound anytime, anywhere, and share your music with confidence.

Screenshots

Audio Object4 screens
Master4 screens

Verdict

The call

The clearest difference is ads: Audio Object at none against Master's shown. Audio Object also leads on monetization model (free vs ad-supported). Master's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, rating, ratings volume and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Audio Object against 5.0 for Master. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Scorecard4 real differences · 6 level
Audio Object versus Master: the parameters behind the verdict, then further details
ParameterAudio ObjectMaster
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings12 — better
Update frequencyEvery 2 months—
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size12 MB186 MB
Age rating4+4+
DeveloperGreen Rose Systems, LLCGlenbert Small

Customer experience

Audio Object

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Master

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Audio Object

No in-app purchases

None

Master

No in-app purchases

Questions

Is Audio Object free?
Audio Object is free to download, with no in-app purchases.
Is Master free?
Master is free to download, with no in-app purchases.
Which has better reviews, Audio Object or Master?
Audio Object and Master are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do Audio Object or Master have ads?
Master shows ads; Audio Object does not.

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