Comparison

Velocity Filter vs Weeping Wall

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

Head to head
About

Velocity Filter

This audio unit plugin enhances synthesizer patches by making them responsive to MIDI velocity. It can function as a MIDI-controlled filter or volume control, adding natural musicality to non-velocity-sensitive sounds without altering their core tone.

Highlights
  • MIDI velocity to volume/filter conversion
  • MIDI-CC and aftertouch control
  • High-shelf filter modulation
  • Preserves original patch tone
  • Batch application to patches
Features
Read full description

WHAT IS VELOCITY FILTER? Velocity Filter is the fastest way to make all your synthesizer patches respond to MIDI velocity in a natural and musical way. Just add it to your audio unit effects on the synth track and you are done! WHAT DOES IT DO? It converts non-velocity-sensitive synths sounds into velocity-sensitive ones. Velocity Filter can be configured as either a MIDI-controlled filter or a MIDI-operated volume control. In filter mode, it adds or removes high frequency energy according to the velocity of each MIDI note, so that lower velocity notes sound softer and have less high harmonic content. You can control the amount of boost or cut and the frequency range. In volume control mode, it adjusts the volume according to incoming MIDI velocity. WHAT ELSE DOES IT DO? In addition to MIDI velocity, you can also control the filter using MIDI-CC or aftertouch controls. So you can control it in a variety of ways. HOW IS THIS BETTER THAN EDITING MY SYNTH PATCHES TO MODULATE THE FILTER CUTOFF BY MIDI VELOCITY? Most synthesizers respond to velocity either by modulating the cutoff frequency of a lowpass filter or by modulating the gain. Doing velocity response that way distorts the tone of the patch in an un-musical way, especially if it uses a resonant lowpass filter. Instead of modulating the gain of a lowpass filter, Velocity Filter modulates the gain of a high-shelf filter. The sound is very different, and can be applied on top of the existing filters in the synth patch without destroying the tone of the patch. Also, if you are browsing through a collection of 1000 patches, it's much easier to apply this filter to the output than to modify each and every patch to modulate the filter cutoff with MIDI velocity. However, it's not necessarily "better"; it's just very different. Read the limitations section below for why it's not always better. WHAT LIMITATIONS DOES IT HAVE? All notes go through one filter, so if you play two notes at the same time, with different velocities, it will set the filter for the loudest of the two notes. Also, the filter takes about 1 millisecond to change from loud to soft, so if you quickly switch from loud to soft, you'll hear the filter clamping down AFTER the initial attack. This is problematic for synth patches that have near zero attack time. Velocity Filter does not support GarageBand because GarageBand does not support sending MIDI messages to audio effects. Velocity filter is an audio unit plugin ONLY. It runs inside of host apps such as AUM, Audiobus, Cubasis, Auria, and Beatmaker 3.

About

Weeping Wall

This app creates evolving soundscapes by automatically recording and layering new audio input into independent microloopers. It offers extensive controls for loop size, repitching, and randomization, allowing for unique sonic textures. Designed as a modular tool, it integrates seamlessly with other audio effects for creative sound design.

Highlights
  • Automatic microloopers with input detection
  • Independent loopers with variable size
  • Repitching and reverse controls
  • Jitter control for random variations
  • Beat and transport syncing
  • Live performance mode
  • Modular tool for creative sound design
Features
Read full description

Weeping Wall is a standalone app and AUv3 plug-in. WW is a set of microloopers that automatically record based on input detection. Each new sound will be smoothly introduced and replace older sounds, resulting in a group of sounds that always reflect the most recent input. Each looper behaves independently - their size can vary and they will beat against each other as they phase. Up to 5 loopers are available to record into, with repitching and reverse controls as well. A dedicated “jitter” control allows you to randomly vary the size of each looper on each loop, creating variations that will never be heard again. Weeping Wall can be used as an effect directly on a track, or as a send effect. WW is intended to be a modular tool; it doesn’t include reverb, EQ, saturation, flutter, etc., but it plays extremely well with them. WW is a brand new effect that can be used in any number of creative ways - you can place it fully wet in front of a reverb, place a hint of it behind a saturator, combine it with your favorite pitch modulation - whatever you can dream. WW is fully compatible with automation and modulators such as Ableton CV to broaden the horizons even further. Weeping Wall has the following controls available: Threshold: The volume at which input will start recording into a looper. Looper size: The size of loopers, in seconds, from 0.1s to 3s. Jitter: A control for desynchronizing loops. Loops will be randomly shortened, and each one is free to change size independent of one another. Semitones: Repitch loops, with a range of +/- one octave. Reverse: A latching control to reverse looper playback. Looper number: Up to five loopers are available. Hold time: How long loops will be held before fading away, from seconds to forever. This essentially controls whether WW functions more as a looper or as a delay. Independent dry and wet volumes: Use WW as an effect directly on your track, or as a send effect. Beat syncing: Loopers can be synced to your tempo, from 1 whole measure to 1/64th notes. Macro-looper mode: Loops can grow to up to 60 seconds in length. Transport syncing: Loopers can be paused or destroyed on pause. Live performance mode: Enables a button-based UI designed with live performance in mind. Random skip: Loops can be randomly skipped over with some probability. Crossfade length: Control the length of the crossfade occurring at the start/end of each loop to keep sharper transients or smooth them off. Fade time: Control how long loops take to fade in/out. Filters: The wet channel can be high or low pass filtered for dialing in your sound.

Screenshots

Velocity Filter4 screens
Weeping Wall2 screens

Verdict

The call

The clearest difference is price: Velocity Filter at $2.99 against Weeping Wall's $8.99. Weeping Wall's advantage is ratings volume (33 vs 7). On rating, review sentiment, update cadence and ads 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

Velocity Filter costs $2.99 and Weeping Wall $8.99 up front. 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 Velocity Filter against 5.0 for Weeping Wall. Both are backed by a comparable volume of ratings — 7 and 33 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Velocity Filter ships an update every 3 weeks, Weeping Wall monthly. The most recent releases landed on September 30, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 8 level
Velocity Filter versus Weeping Wall: the parameters behind the verdict, then further details
ParameterVelocity FilterWeeping Wall
Price$2.99 — better$8.99
Rating5.0 (7 ratings)5.0 (33 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings733 — better
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size15 MB19 MB
Age rating4+4+
DeveloperBlue Mangoo Consulting Company LimitedAqeel Aadam

Customer experience

Velocity Filter

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Weeping Wall

All ratings33 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews12 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Velocity Filter

No in-app purchases

None

Weeping Wall

No in-app purchases

Questions

Is Velocity Filter free?
Velocity Filter costs $2.99, with no in-app purchases.
Is Weeping Wall free?
Weeping Wall costs $8.99, with no in-app purchases.
Which has better reviews, Velocity Filter or Weeping Wall?
Velocity Filter and Weeping Wall are both rated 5.0 out of 5 on the App Store, from 7 and 33 ratings respectively.
Do Velocity Filter or Weeping Wall have ads?
Neither Velocity Filter nor Weeping Wall shows ads.
Which is updated more often, Velocity Filter or Weeping Wall?
Velocity Filter ships an update every 3 weeks, and Weeping Wall monthly. Most recently, Velocity Filter was updated on September 30, 2026 and Weeping Wall on October 12, 2026.

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