Comparison

Chord Randomizer vs Audio Interface Recorder

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

Head to head
About

Chord Randomizer

Features
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Chord Randomizer is a powerful music theory practice tool from Nathaniel School of Music. Whether you're a beginner just learning your triads or an advanced musician drilling diatonic progressions, Chord Randomizer keeps your practice sessions fresh and effective. FEATURES - Randomised chord progressions so you never practice the same sequence twice - Three skill levels: Beginner, Intermediate, and Diatonic - Live audio playback with realistic instrument sounds: piano, guitar, harp, and cello - Arpeggio and block-chord playback modes, each with independent volume - Built-in metronome with configurable BPM from 40 to 240 - Playback speed multiplier: 1x, 1.5x, and 2x - Chord rate control: change chords every beat, every bar, or every two bars - Loop mode for continuous practice - MIDI export for use in any DAW - PNG export to share a clean chord chart with students or bandmates - Dark, professional UI optimised for practice sessions PERFECT FOR - Music students building chord recognition - Teachers generating practice exercises - Songwriters and composers exploring new progressions - Guitarists, pianists, and keyboardists of all levels Chord Randomizer runs entirely on-device. No account is needed, and no data is collected.

About

Audio Interface Recorder

Features
Read full description

AudioRecorder turns your iPhone or iPad into a clean, no-nonsense recorder for your USB audio interface - in the studio, at home, or on stage. Plug in your interface, choose your inputs, and capture uncompressed 24-bit WAV at your hardware's native sample rate. No conversion, no color - just your signal. Built for musicians and home studios who want a dependable capture tool without launching a full DAW. RECORD • Works with any class-compliant USB audio interface • Uncompressed 24-bit PCM WAV at the interface's native sample rate - never resampled • Mono, stereo, or mono-sum capture • Choose exactly which inputs feed Left and Right, so a multi-input interface lets you pick any two • Live level meters with a peak readout and clip indicator for dialing in gain • Preview the input before you commit to a take • A big, unmissable record button and elapsed timer STAY IN CONTROL • Live "time remaining" estimate from your free space, with a low-space warning • The screen stays awake while recording, so the meters never dim • Interrupted takes - a phone call, an unplugged cable - are saved as partial recordings, not lost LIBRARY • Play back with scrubbing • Rename, delete and organize your takes • Share via AirDrop or Files, or export straight to a USB drive SETUP HELP • A built-in connection guide shows exactly how to wire things up, with diagrams for both USB-C and Lightning devices WHAT YOU NEED • A class-compliant USB audio interface • If your iPhone or iPad has a USB-C port, then the Audio Interface will work without external power • On Lightning devices, an Apple Lightning to USB Camera Adapter is needed and the Audio interface needs a source of external power AudioRecorder does one thing and does it cleanly: get the signal from your interface onto your device, uncompressed and intact.

Screenshots

Chord Randomizer1 screens
Audio Interface Recorder4 screens

Verdict

The call

The clearest difference is iOS requirement: Chord Randomizer at 15.0 against Audio Interface Recorder's 17.6. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

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

Scorecard1 real difference Ā· 5 level
Chord Randomizer versus Audio Interface Recorder: the parameters behind the verdict, then further details
ParameterChord RandomizerAudio Interface Recorder
PriceFreeFree
Update frequency—Every 3 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size19 MB1 MB
Age rating4+4+
DeveloperJason ZachariahRAIMONDS BLUMS

In-app purchases

None

Chord Randomizer

No in-app purchases

None

Audio Interface Recorder

No in-app purchases

Questions

Is Chord Randomizer free?
Chord Randomizer is free to download, with no in-app purchases.
Is Audio Interface Recorder free?
Audio Interface Recorder is free to download, with no in-app purchases.
Do Chord Randomizer or Audio Interface Recorder have ads?
Neither Chord Randomizer nor Audio Interface Recorder shows ads.

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