Comparison

ScratchBud Vinyl Scratching FX vs RDM

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

Head to head
About

ScratchBud Vinyl Scratching FX

This app brings the tactile experience of vinyl scratching to your device. It offers a realistic UI, the ability to scratch live audio or samples, and advanced features like LFO automation and AUv3 integration for professional sound design.

Highlights
  • Vinyl-like UI with speed fader
  • Scratch live audio or loaded samples
  • Customizable crossfader with MIDI control
  • Automated scratches with LFO
  • 3-second audio recording and looping
  • AUv3 plugin support
  • Low-pass filter for sound design
Features
Read full description

ScratchBud makes it easy to bring the feel of vinyl scratching to your iOS or Apple Silicon device. Whether you’re a DJ, producer, or just love experimenting with sound, ScratchBud has everything you need to start scratching. Key Features: Vinyl-Like UI: Intuitive interface mimics a real DJ turntable, complete with adjustable speed fader and motor controls. Scratch Anything: Use live audio input, a loaded sample file, or the included classic “aaah” and “fresh” samples. Customizable Crossfader: Seamlessly blend between the audio input source and FX output, with MIDI note control options. Auto Scratch with LFO: Automate scratches with adjustable LFO parameters, including rate, amount, waveform, and DAW tempo sync. Advanced Recording Options: Capture, loop, and scratch up to 3 seconds of audio, with configurable recording behaviors. AUv3 Integration: Full support for AUv3 hosts, exposing all parameters for MIDI CC control and automation. Professional Sound Design: Refine your scratch sound with built-in low-pass filter controls for cutoff and resonance. Start scratching immediately with included classic samples or load your own. ScratchBud works as a standalone app or an AUv3 plugin, making it a versatile tool for your studio or live performances.

About

RDM

Features
Read full description

Build your own random dance practice with RDM: Random Dance Mixer. Add local audio files or YouTube video links, choose each track’s start and end points, adjust volume, and prepare your shuffle order and countdown. Keep the next track a surprise while you dance. FREE FEATURES • Up to 5 local playlists and 5 stream playlists • Playback sections, volume, shuffle and countdown settings • Stream playlist share codes: 1 per day, valid for 24 hours • Restore an existing Google Drive backup RDM PRO — OPTIONAL ONE-TIME PURCHASE • Unlimited local and stream playlists • Practice mode with track repeats, full rounds and adjustable rest • Remove RDM’s own advertisements • Create Google Drive backups, optionally including local audio • Up to 20 stream share codes per day Share codes contain YouTube playlist references, not audio files. Share limits reset at 00:00 UTC. The sharing feature may be unavailable when temporarily disabled by the service. Google sign-in is optional and only required for Drive features. Drive access is limited to RDM’s hidden app-data area. RDM does not extract or download YouTube audio. YouTube controls video availability and ads, which may still appear with Pro. Use local audio you have the right to use. The app displays the actual price from your store before purchase. Pro is a non-consumable purchase, not a subscription. Purchases can be restored through the same App Store account.

Screenshots

ScratchBud Vinyl Scratching FX4 screens
RDM4 screens

Verdict

The call

The clearest difference is price: RDM at Free against ScratchBud Vinyl Scratching FX's $5.99. ScratchBud Vinyl Scratching FX's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support 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

RDM is free to download; ScratchBud Vinyl Scratching FX costs $5.99 up front. RDM sells 1 one-off in-app purchase. ScratchBud Vinyl Scratching FX asks for nothing beyond the download.

UpkeepUpdate frequency

ScratchBud Vinyl Scratching FX ships an update every 4 days, RDM monthly. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
ScratchBud Vinyl Scratching FX versus RDM: the parameters behind the verdict, then further details
ParameterScratchBud Vinyl Scratching FXRDM
Price$5.99Free — better
Rating4.6 (16 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings16 — better—
Update frequencyEvery 4 days — betterMonthly
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size15 MB61 MB
Age rating4+4+
DeveloperCem OlcayMinseok Song

In-app purchases

None

ScratchBud Vinyl Scratching FX

No in-app purchases

1 purchases

RDM

One-time1
  • RDM Pro (Lifetime)$3.99

Questions

Is ScratchBud Vinyl Scratching FX free?
ScratchBud Vinyl Scratching FX costs $5.99, with no in-app purchases.
Is RDM free?
RDM is free to download, with in-app purchases available.
Do ScratchBud Vinyl Scratching FX or RDM have ads?
RDM shows ads; ScratchBud Vinyl Scratching FX does not.
Which is updated more often, ScratchBud Vinyl Scratching FX or RDM?
ScratchBud Vinyl Scratching FX ships an update every 4 days, and RDM monthly. Most recently, ScratchBud Vinyl Scratching FX was updated on October 30, 2026 and RDM on October 25, 2026.

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