Comparison

DelayJaVu vs FrobulatorAU

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

Head to head
About

DelayJaVu

This audio effect plugin creates a unique stereo reverse delay sound. It captures your dry signal and plays it back in reverse, with independent control over left and right channel delay times, modulation, and stereo spread for creative sound design.

Highlights
  • Stereo reverse delay effect
  • Independent L/R delay times
  • Adjustable modulation
  • Variable stereo spread
  • AUv3 compatible
  • Standalone operation
Read full description

DelayJaVu - Stereo Reverse Delay (AUv3) DelayJaVu is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic Pro or GarageBand. Overview Deja Vu - French for "already seen". The brief, intense and often startling sensation that a current, new experience has happened before. DelayJaVu is a stereo reverse delay with independent delay times for the left and right channels. DelayJaVu works by capturing your dry signal in a delay buffer, which is then read backwards over a time period corresponding to a delay time. As the virtual delay head repeatedly scans back through the delay buffer, you hear segments your original dry signal, repeated in reverse. I think reverse delay is a really cool effect - one of my favourites in fact! I especially like its slightly unpredictable nature, making it a great effect to interact with, as you play. I don't recall seeing any reverse delay plugins with independent times for the left and right channels so that may be something unique that DelayJaVu has to offer. And the addition of modulation and variable stereo spread adds further creative options, while keeping DelayJaVu compact, super easy to use and very DSP-friendly. Controls Mode - Off bypasses the effect and uses a "soft switching" aka "trails mode", to avoid pops and clicks. In L/R Lock mode, the delay time is set to be the same for the left and right channel, and the parameter sliders will be "locked" to the same value when changed. In L/R Free mode, you can set independent delay times for the left and right channel. Time L / R - Sets the delay time for the left and right channels independently, from 250ms to 2.5 seconds. Interesting effects can be achieved by setting the delay times to be close, but not exactly the same. Please note - Unlike a "normal" delay where you will hear the sound repeat after the delay time specified, DelayJaVu doesn't quite work like that. The delay heads for both channels are always in motion and repeat their cycles according to the delay time. This means that sometimes the delay head will be "closer" to the incoming audio. In this case you may hear the first repeat almost straight away, with subsequent repeats occurring at delay time intervals when the Feedback is > 0%. This is especially noticeable (and cool!) when running in Free mode with different delay times. This is also the way many reverse delays are implemented and why this particular design doesn't lend itself to tempo sync delay effects as the repeats will not "quantise" to note length boundaries. Feedback - Sets the feedback / regeneration for the delay on both channels. Mod - Adds a variable amount of modulation to both channels. As each channel is modulated differently, this can produce a nice stereo effect. Spread - At maximum, the left and right delay channels are hard-panned and have their own independent modulation applied. Decreasing the Spread parameter effectively narrows the stereo image of the delay and modulation all the way down to mono. Mix - The mix control goes from 100% dry to 100% wet. At the centre 50% position, the dry and wet signals are evenly balanced. At 100%, you only hear the wet / processed signal. For more info and support please visit: www.waverley-instruments.com/robjackson

About

FrobulatorAU

This audio effect plugin transforms sounds with spectral delay, adding unique character to music projects. It's a free and open-source tool designed for use in various audio applications, offering extensive creative possibilities.

Highlights
  • Spectral delay effect
  • AUv3 plugin
  • Use in GarageBand, AUM, and other DAWs
  • Multiple instances per project
  • Free and open-source
  • No ads or in-app purchases
Features
Read full description

Venerable inter-app audio effect Frobulator reborn — at long last — as an AUv3 plugin. Use it in GarageBand, AUM or your favourite audio application. Add multiple instances in the same project. Drag your frobulation kicking and screaming into the 21st century. Frobulator is a spectral delay effect. It makes your noises a little bit stranger. Twiddle the knobs to find something you like, or don't and throw it away. No-one will hold it against you. Frobulator is free as in beer and free as in speech. Freer, probably, given the state of both those things these days. No ads, no in-app purchases, no subscriptions, no surveillance, no nag screens. If you happen to be one of the 6 people who asked for this, rejoice! If you aren't, now's your chance to discover what you've been missing all this time. Or not. I'm not the boss of you.

Screenshots

DelayJaVu3 screens
FrobulatorAU1 screens

Verdict

The call

The clearest difference is price: FrobulatorAU at Free against DelayJaVu's $1.99. FrobulatorAU also leads on update cadence (every 9 days vs every 2 months) and ratings volume (8 vs 1). DelayJaVu's advantage is device support (4 vs 2) and iOS requirement (12.0 vs 17.0). On rating, 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

FrobulatorAU is free to download; DelayJaVu costs $1.99 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 DelayJaVu against 5.0 for FrobulatorAU. That said, the two scores are not equally well evidenced: FrobulatorAU has 8 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

DelayJaVu ships an update every 2 months, FrobulatorAU every 9 days. Both last shipped on October 31, 2026.

Scorecard6 real differences · 3 level
DelayJaVu versus FrobulatorAU: the parameters behind the verdict, then further details
ParameterDelayJaVuFrobulatorAU
Price$1.99Free — better
Rating5.0 (1 ratings)5.0 (8 ratings)
Number of ratings18 — better
Update frequencyEvery 2 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size13 MB2 MB
Age rating4+4+
DeveloperRob JacksonMatthew Caldwell

Customer experience

DelayJaVu

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

FrobulatorAU

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

DelayJaVu

No in-app purchases

None

FrobulatorAU

No in-app purchases

Questions

Is DelayJaVu free?
DelayJaVu costs $1.99, with no in-app purchases.
Is FrobulatorAU free?
FrobulatorAU is free to download, with no in-app purchases.
Which has better reviews, DelayJaVu or FrobulatorAU?
DelayJaVu and FrobulatorAU are both rated 5.0 out of 5 on the App Store, from 1 and 8 ratings respectively.
Do DelayJaVu or FrobulatorAU have ads?
Neither DelayJaVu nor FrobulatorAU shows ads.
Which is updated more often, DelayJaVu or FrobulatorAU?
DelayJaVu ships an update every 2 months, and FrobulatorAU every 9 days. Most recently, DelayJaVu was updated on October 31, 2026 and FrobulatorAU on October 31, 2026.

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