Comparison

Dub Filter vs Retrocord

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

Head to head
About

Dub Filter

This audio plugin emulates a legendary vintage high-pass filter, offering eleven frequency steps and controls for resonance, magnetism, character, dynamics, and artifacts. It includes LFO and Envelope Follower modulation sources for creative sound design.

Highlights
  • Vintage high-pass filter emulation
  • Eleven frequency steps
  • Adjustable resonance
  • Magnetism, Character, Dynamics, Artifacts controls
  • LFO modulation
  • Envelope Follower modulation
  • Standalone and AUv3 formats
Features
Read full description

Dub Filter is a filter plugin modeled after King Tubby’s iconic Big Knob, a passive high-pass filter with eleven frequency steps from 70Hz to 7.5KHz. This filter defined the sound of the entire "roots" era of Jamaican music. On top of the main stepped Frequency knob and the Impedance (resonance), the filter also offers control over its behavior including Magnetism, Character, Dynamics, and Artefacts controls. We have also included two modulation sources, LFO and Envelope Follower, to enhance the creative possibilities of the plugin, from rhythmic pulsations to organic filter movements. Available as Standalone and AUv3.

About

Retrocord

Features
Read full description

Retrocord is a retroactive multitrack audio recorder. It works like a tape that's always recording from your selected input, so when you play something worth keeping, you can save the last few minutes — after the fact. How it works Choose your audio input and a buffer length. Retrocord records silently in the background. When you want to keep what you just played, tap a duration to capture. The audio lands in your library as a recording you can play back, edit, organize, and export. Multitrack support Retrocord records every channel your audio input exposes, each as its own track. Connect a class-compliant multichannel USB audio interface — such as the Focusrite Scarlett series or similar — and capture individual inputs as separate stems. Mute and solo tracks during playback, then export them to your DAW to mix and arrange later. Edit before you export Retrocord lets you shape a capture without leaving the app: - Trim — set start and end points against a recording to keep only the part that matters - Split — cut a capture in two at the playhead to create separate recordings - Gain — adjust level in 3 dB steps, up to ±24 dB Your library, on every device Recordings live in an organized library — sessions hold captures, captures hold tracks — with waveforms, names, and durations at a glance. Your library syncs privately across your iPhone, iPad, and Mac through your own iCloud account. Lossless, and smaller Captures are stored as Apple Lossless (ALAC) — full 24-bit, 48 kHz quality at roughly half the size of uncompressed WAV. When it's time to move audio out, export individual tracks or a flattened mix as ALAC or 24-bit WAV, with your trim and gain applied. Use cases - Capturing jams and improvisations without arming a DAW - Recording stems from multichannel audio interfaces - Field recording, where the moment you want has already passed by the time you'd hit record - Interviews and spoken word, where restarting a conversation to get a clean take isn't an option - Practice sessions, rehearsals, and songwriting where good ideas surface unpredictably Details - Works with any class-compliant USB audio interface - Also supports the built-in microphone on iPhone and iPad - Stereo pairing toggle for interleaved L/R channels - Per-track mute and solo during playback - Non-destructive trim, split, and gain - Apple Lossless (ALAC) storage; export to ALAC or 24-bit/48 kHz WAV - Private iCloud sync across your devices, through your own iCloud account - No third-party account, no analytics — your recordings are yours

Screenshots

Dub Filter1 screens
Retrocord4 screens

Verdict

The call

The clearest difference is update cadence: Retrocord at every 3 weeks against Dub Filter's every 15 months. Dub Filter's advantage is price ($14.99 vs $19.99) and iOS requirement (12.0 vs 18.0). On ads, in-app purchases and 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

Dub Filter costs $14.99 and Retrocord $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Dub Filter ships an update every 15 months, Retrocord every 3 weeks. The most recent releases landed on November 4, 2026 and November 9, 2026 respectively.

Scorecard3 real differences · 7 level
Dub Filter versus Retrocord: the parameters behind the verdict, then further details
ParameterDub FilterRetrocord
Price$14.99 — better$19.99
Rating5.0 (6 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 15 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better18.0
Further details — not scored
Size21 MB5 MB
Age rating4+4+
DeveloperAudioThing Ltd.Rocamr Labs, LLC

In-app purchases

None

Dub Filter

No in-app purchases

None

Retrocord

No in-app purchases

Questions

Is Dub Filter free?
Dub Filter costs $14.99, with no in-app purchases.
Is Retrocord free?
Retrocord costs $19.99, with no in-app purchases.
Do Dub Filter or Retrocord have ads?
Neither Dub Filter nor Retrocord shows ads.
Which is updated more often, Dub Filter or Retrocord?
Dub Filter ships an update every 15 months, and Retrocord every 3 weeks. Most recently, Dub Filter was updated on November 4, 2026 and Retrocord on November 9, 2026.

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