Comparison

DelayJaVu vs Tapko Harmony

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

Tapko Harmony

Currently charting
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Tapko Harmony does what a guitar-driven vocal harmony pedal does, right inside your iPad or iPhone. It turns your guitar chords into live vocal harmonies. Play and sing as you always do: the harmony follows every chord change, with no MIDI programming and no key to set. It comes as two AUv3 plug-ins that work together in your favorite host (AUM, Loopy Pro, GarageBand and others): • Tapko Harmony – Guitar listens to your guitar and recognizes the chords you play. • Tapko Harmony – Voice listens to your voice and sings harmonies that fit those chords. The two plug-ins find each other on their own. No cables, no routing, no setup. TWO HARMONY VOICES • Harmony 1 sings above you by default, always on a note of the current chord. • Harmony 2 adds a second voice, below you by default. • Volume and pan for each harmony, so you can place them left and right around your lead. • Dry + Harmony: keep your voice in the mix, or output only the harmonies to mix them on their own channel. MAKE THE HARMONY YOURS (EXPERIMENTAL) Harmony rules let you choose which notes your harmonies sing: • Follow your guitar, lock the harmony to your song's key, or enter your song's own chords. • Pick a style: third or fifth above, third or sixth below, or a fixed interval. • Write rule cards for your chords to get exactly the harmony you hear in your head. • Harmony 2 has its own picker and its own rule cards. Tapko Standard, the automatic harmony, is always one tap away. START FROM A PRESET Five ready-made sounds in the Voice plug-in: Natural, Tight, Ballad, Choir and Pure. Pick one and play, or use it as a starting point for your own. MADE FOR LIVE PLAYING • Low latency, so the harmony lands with you, not after you. • A natural-sounding pitch shifter that keeps the character of your own voice. • Steady harmonies that stay put when your pitch wavers or you slide between notes. • The song key is found automatically. • Tuned down, or slightly off A = 440? The harmonies follow your guitar's own tuning. • No guitar? Send chords over MIDI from a keyboard or your host instead. • MIDI out (experimental): send the harmony notes to another synth or pitch shifter. SHAPE THE SOUND The Advanced tab lets you fine-tune how the harmony feels: how closely it follows your pitch, how it glides between notes, vibrato and tone. Make it human adds the touches of a real backing singer: a slightly late entry, a small scoop, gentle drift and a doubled voice. SAVES WITH YOUR SONGS Every setting, your chords and rule cards included, is saved with your host project and in host presets, so each song comes back exactly as you left it. BUILT WITH YOU Tapko Harmony is ready for the stage today and actively developed, with its direction set by the people who use it. The Support tab in both plug-ins lets you: • Send feedback in seconds. The report includes the plug-in settings and a short technical log, and the screen shows exactly what is sent. • See the roadmap: what is planned, in progress and just shipped. • Read the how-to for setup and quick fixes. TYPICAL SETUP 1. Load Tapko Harmony – Guitar on your guitar channel. 2. Load Tapko Harmony – Voice on your vocal channel. 3. Play and sing. The harmony follows your chords. GREAT FOR • Solo singer-songwriters playing live. • Duos and small acts who want a bigger vocal sound. • Songwriters sketching harmony ideas. • Anyone recording vocals on iPad or iPhone in an AUv3 host. GOOD TO KNOW • Real-time chord detection and harmony take real processing power. Tapko Harmony is very CPU efficient, but a recent iPad or iPhone gives the best live experience. • Clean, direct guitar and vocal signals on separate inputs give the best results. FROM TAPKO Tapko Harmony joins Tapko, Tapko Komp and Pitchli on the App Store, and more Tapko plug-ins for live musicians are on the way.

Screenshots

DelayJaVu3 screens
Tapko Harmony2 screens

Verdict

The call

The clearest difference is price: DelayJaVu at $1.99 against Tapko Harmony's $19.99. DelayJaVu also leads on device support (4 vs 2) and iOS requirement (12.0 vs 16.0). Tapko Harmony's advantage is update cadence (every 4 days vs every 2 months) and chart position (#185 vs unranked). On 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

DelayJaVu costs $1.99 and Tapko Harmony $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

DelayJaVu ships an update every 2 months, Tapko Harmony every 4 days. The most recent releases landed on November 12, 2026 and November 10, 2026 respectively.

Scorecard5 real differences · 5 level
DelayJaVu versus Tapko Harmony: the parameters behind the verdict, then further details
ParameterDelayJaVuTapko Harmony
Price$1.99 — better$19.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank—#185 — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size13 MB2 MB
Age rating4+4+
DeveloperRob JacksonDavid Lars Guva

In-app purchases

None

DelayJaVu

No in-app purchases

None

Tapko Harmony

No in-app purchases

Questions

Is DelayJaVu free?
DelayJaVu costs $1.99, with no in-app purchases.
Is Tapko Harmony free?
Tapko Harmony costs $19.99, with no in-app purchases.
Do DelayJaVu or Tapko Harmony have ads?
Neither DelayJaVu nor Tapko Harmony shows ads.
Which is updated more often, DelayJaVu or Tapko Harmony?
DelayJaVu ships an update every 2 months, and Tapko Harmony every 4 days. Most recently, DelayJaVu was updated on November 12, 2026 and Tapko Harmony on November 10, 2026.

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