Comparison

WOW Filterbox vs jAmp Doubler

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

Head to head
About

WOW Filterbox

This app offers a creative multi-filterbox with 21 filter types, analog and digital distortions, and powerful modulation options. It includes an integrated player and recorder, XY-pads for parameter control, and supports MIDI and Ableton Link.

Highlights
  • 21 filter types
  • Analog and digital distortion
  • Step sequencer & wobble generator
  • LFO with multiple waveforms
  • XY-Pads for parameter control
  • Integrated player and recorder
  • MIDI support & Ableton Link
Read full description

WOW2 is here! With a future-dripping user interface, 21 incredible filter types with the famous vowel mode. With distortions that cover your tracks with gas and put them on fire. Modulations that cause more trouble than your modular dark room. And finally that warm and juicy sound, that you were looking for. - 21 Filter types like Lowpass, Bandpass, Highpass, Bandreject, Comb and much more. Low pass types up to 48 db, including flavors like SVF, Diode Ladder and Transistor Ladder. The filters and distortions have been designed for best harmonics without aliasing, for high definition audio quality. - Three different analog modeling overdrives and four digital distortion functions are included. Use them pre or post the filter. - Modulation is power. Power is ***. Create stunning trance gates with the step sequencer, do some giant wobbles with the wobble generator or let all the modulators interact with each other. The LFO offers many different wave forms, restart options and sync flavors. - Presets are just one click away. Randomize presets to inspire yourself. Features at a Glance: • Audio Unit v3 & Standalone • XY-Pads to control 6 Parameters simultaneously • Integrated Player (File Sharing, Music Library, Factory Loops) • Integrated Recorder (div. Optionen: Start/Stop/Sync/Länge) • Live Modus (Inputs & Outputs selectable) • MIDI Support, MIDI Learn & Host Automation • Midi Clock Sync • Ableton Link support • Audioshare Import & Preset Share (iCloud)

About

jAmp Doubler

This audio plugin creates a stereo effect by introducing a subtle delay to one audio channel. It offers precise control over the delay time and can be managed via MIDI. Ideal for enhancing mono audio sources with a wider soundstage.

Highlights
  • Stereo widening effect
  • Adjustable delay time (0-50 microseconds)
  • MIDI control
  • AUv3 plugin format
  • Enhances mono audio
Features
Read full description

Doubler is an AUv3 plugin that adds stereo effect by delaying the right channel wrt the left channel. The delay is controlled by the central knob and goes from 0 microseconds to 50 microseconds. It is possible to control this plugin via MIDI.

Screenshots

jAmp Doubler1 screens

Verdict

The call

The clearest difference is review sentiment: jAmp Doubler at 100% against WOW Filterbox's 64%. jAmp Doubler also leads on in-app purchases (none vs 1) and update cadence (every 9 days vs every 4 months). WOW Filterbox's advantage is ratings volume (30 vs 4). On price 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

Both are free to download. WOW Filterbox sells 1 one-off in-app purchase. jAmp Doubler asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

jAmp Doubler holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: WOW Filterbox has 30 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 64% of WOW Filterbox's written reviews are positive against 100% of jAmp Doubler's.

UpkeepUpdate frequency

WOW Filterbox ships an update every 4 months, jAmp Doubler every 9 days. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

Scorecard8 real differences · 2 level
WOW Filterbox versus jAmp Doubler: the parameters behind the verdict, then further details
ParameterWOW FilterboxjAmp Doubler
PriceFreeFree
Rating4.6 (30 ratings)5.0 (4 ratings) — better
Positive reviews64.3% of reviews100.0% of reviews — better
Number of ratings30 — better4
Update frequencyEvery 4 monthsEvery 9 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPadiPhone, iPad, iPod, Mac — better
Requires iOS17.614.0 — better
Further details — not scored
Size86 MB6 MB
Age rating4+4+
DeveloperSugar Bytes GmbHJan Maes

Customer experience

WOW Filterbox

All ratings30 ratings
Positive86.7%
Neutral10.0%
Negative3.3%
Written reviews42 reviews
Positive64.3%
Neutral11.9%
Negative23.8%

jAmp Doubler

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

WOW Filterbox

One-time1
  • WOW Full Version$19.99
None

jAmp Doubler

No in-app purchases

Questions

Is WOW Filterbox free?
WOW Filterbox is free to download, with in-app purchases available.
Is jAmp Doubler free?
jAmp Doubler is free to download, with no in-app purchases.
Which has better reviews, WOW Filterbox or jAmp Doubler?
jAmp Doubler is rated higher. WOW Filterbox averages 4.6 out of 5 from 30 ratings, while jAmp Doubler averages 5.0 from 4 ratings.
Do WOW Filterbox or jAmp Doubler have ads?
Neither WOW Filterbox nor jAmp Doubler shows ads.
Which is updated more often, WOW Filterbox or jAmp Doubler?
WOW Filterbox ships an update every 4 months, and jAmp Doubler every 9 days. Most recently, WOW Filterbox was updated on November 1, 2026 and jAmp Doubler on November 4, 2026.

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