Comparison

TB DualVCF vs BLEASS Flanger

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

Head to head
About

TB DualVCF

This app offers a dual analog filter plug-in for music production, providing a wide range of vintage filter models to shape sound. It features intuitive modulation and envelope followers for creative audio exploration, compatible with AUv3 hosts.

Highlights
  • Dual analog filter sections
  • Dozens of vintage filter models
  • Envelope followers
  • Intuitive modulation editor
  • AUv3 plug-in compatibility
  • Real-time audio processing
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Dual VCF - the ultimate dynamic filtering AUv3 plug-in! Dual VCF adds motion, shape, and colour. It produces evolving rhythmic movement and complex dynamic filter shapes. It contains dozens of analog filter models with that sought-after sound of the 70s, 80s and 90s. Combined with envelope followers and intuitive modulation editors, it provides almost infinite possibilities for creative aural exploration. Dual VCF features two filter sections, each supporting dozens of low-pass, high-pass and band-pass filter types. Every type is painstakenly modeled after analog filter types found in analog gear, analog synthesizers, and alike, including non-linear filter behavior. Dial in that characterstic 70s, 80s or 90s filter to add some analog flavor to your tracks! Each filter's cut-off frequency and resonance can be sequenced with an intuitive, free-running or beat-synced modulation editor. Seamlessly switch between sine, triangle, noise, or user-defined modulation waveforms. In addition, these parameters can also be modulated with the built-in envelope follower. The ToneBoosters DualVCF app captures the microphone (or external sound card) input and processes the signals in real time. To use it as a plug-in, use an AUv3-compatible host app such as Steinberg Cubasis, Apple Garageband, Audio Evolution Mobile Studio, Auria, AUM, or others. ToneBoosters DualVCF will appear in the list of Audio Unit extensions for effect plug-ins. How to use DualVCF as AUv3 plugin in a host program, start your favourite AUv3 host app (Steinberg Cubasis, Apple Garageband, Audio Evolution Mobile Studio, Auria, AUM, or others) and add TB DualVCF as Audio Unit insert effect to a track or output bus. See below on how to use Audio Units in various host apps. Key features: - The same professional sound as the acclaimed desktop version - Two analog filter sections with dozens of filter designs - Intuitive modulation editor for creative, rhythmic and evolving effects - Undo/redo, and A/B comparison - Color themes for the user interface - Max screen support in Garageband - Optimised for iPad and compatible with iPhone and iPod Touch What you should know: - Licenses acquired for this platform are not compatible with other platforms. - Audio Unit (AUv3) extensions require an iPad mini 2, iPad 4 or later models.

About

BLEASS Flanger

This audio effect app provides a modern take on classic flanging, offering flexible modulation sources, an envelope generator, and beat synchronization. It allows for complex and evolving timbral movement within your sound, with intuitive controls and efficient CPU usage.

Highlights
  • Flexible LFOs
  • Envelope generator
  • Beat synchronization
  • Variable modulation routing
  • Multi-mode input filter
  • Stereo width control
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BLEASS Flanger harnesses the sonic characteristics of classic flanger effects and brings them fully up-to-date with a pair of flexible LFOs, variable modulation routing, an envelope generator and beat synchronisation. Classic flangers are a delay-based effect, and modulate the delay time to create the distinctive, repetitive flanged sound. But with BLEASS Flanger, multiple modulation sources are combined to create detailed, complex and evolving timbral movement within your sound. The addition of an envelope generator, which is triggered by the incoming signal, adds an additional dimension to the flanger effect, making it sensitive to the dynamics and nuances of your performances. The second LFO can take the sonic possibilities further still, with the option for it to modulate the delay’s feedback strength or stereo width. The tonal character of the effect can be controlled easily thanks to the multi-mode input filter, whilst the ability to synchronise the LFOs to the beat of your music allows you to explore completely new rhythmic and evolving effects. BLEASS’ trademark interface design ensures this powerful collection of tools are both easy and fun to work with, so you can harness their sonic versatility without ever hindering your musical creativity. And with super-efficient CPU usage, and compatibility with all major hosts and DAWs on desktop, iPad or iPhone, BLEASS Flanger is the only flanger you will ever need. More information on https://www.bleass.com/flanger/

Screenshots

TB DualVCF3 screens
BLEASS Flanger3 screens

Verdict

The call

The clearest difference is update cadence: TB DualVCF at every 2 months against BLEASS Flanger's every 31 months. BLEASS Flanger's advantage is review sentiment (100% vs 80%) and price ($3.99 vs $4.99). On rating, ratings volume, ads 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

TB DualVCF costs $4.99 and BLEASS Flanger $3.99 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 — 4.9 for TB DualVCF against 5.0 for BLEASS Flanger. Both are backed by a comparable volume of ratings — 18 and 13 respectively. Written reviews are what separate them: 80% of TB DualVCF's written reviews are positive against 100% of BLEASS Flanger's.

UpkeepUpdate frequency

TB DualVCF ships an update every 2 months, BLEASS Flanger every 31 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

Scorecard4 real differences · 6 level
TB DualVCF versus BLEASS Flanger: the parameters behind the verdict, then further details
ParameterTB DualVCFBLEASS Flanger
Price$4.99$3.99 — better
Rating4.9 (18 ratings)5.0 (13 ratings) — better
Positive reviews80.0% of reviews100.0% of reviews — better
Number of ratings18 — better13
Update frequencyEvery 2 months — betterEvery 31 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.011.0 — better
Further details — not scored
Size12 MB27 MB
Age rating4+4+
DeveloperToneBoostersBLEASS

Customer experience

TB DualVCF

All ratings18 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews15 reviews
Positive80.0%
Neutral6.7%
Negative13.3%

BLEASS Flanger

All ratings13 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

TB DualVCF

No in-app purchases

None

BLEASS Flanger

No in-app purchases

Questions

Is TB DualVCF free?
TB DualVCF costs $4.99, with no in-app purchases.
Is BLEASS Flanger free?
BLEASS Flanger costs $3.99, with no in-app purchases.
Which has better reviews, TB DualVCF or BLEASS Flanger?
BLEASS Flanger is rated higher. TB DualVCF averages 4.9 out of 5 from 18 ratings, while BLEASS Flanger averages 5.0 from 13 ratings.
Do TB DualVCF or BLEASS Flanger have ads?
Neither TB DualVCF nor BLEASS Flanger shows ads.
Which is updated more often, TB DualVCF or BLEASS Flanger?
TB DualVCF ships an update every 2 months, and BLEASS Flanger every 31 months. Most recently, TB DualVCF was updated on November 3, 2026 and BLEASS Flanger on November 7, 2026.

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