Comparison

JAX ONE XModulator Extended vs TowerDub

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

Head to head
About

JAX ONE XModulator Extended

This app offers a classic ring modulator effect with an analog-modeled unison oscillator for sound modulation and sonic refinement. It functions as a creative sound design tool and special effect processor with a unique 3D modular rack interface.

Highlights
  • Analog modeled ring modulator
  • Unison oscillator modulation source
  • Creative sound design tool
  • Special effect processor
  • 3D modular rack user interface
  • AUv3 app extension
Features
Read full description

The JAX ONE series is a new collection of analog modelled audio units (AUV3 app extensions), available on all Apople Silicon platforms and devices. JAX ONE XModulator Extended is a classic ring modulator effect with integration of an analog modelled unison oscillator as modulation source and some further extensions for sound modulation and sonic refinement. It can be used as a creative sound creation tool and special effect processor. It features a freely navigatable 3D user interface in the style of a modular rack synthesizer. A video demonstration is available at : https://youtu.be/Zxw67vlKowQ?si=khKl64aPgyNRW8sr The manual can be found here : https://audio.digitster.com/wp-content/uploads/2024/07/JAX-ONE-XModulator-Extended.pdf This build is truly 'universal', meaning, unit is available for: - MacOS (Silicon) - iOS (iPhone) - iPadOS (iPads) - visionOS (Apple Vision Pro) Please note, that AudioUnits (AUv3) require a supporting host application to perform.

About

TowerDub

Features
Read full description

TowerDub is an all-in-one groovebox for building reggae riddims and mixing dub, live. Program kick, snare, hats and perc as four independent drum voices, each with its own pattern, velocity and p-locks. Layer in Bass, Chords, Lead and Pads — warm, analog-style synths built for roots and dub, playable on a scale keyboard and recordable live with real quantized overdub. Record a vocal chop or a field sample straight into the built-in Sampler. Mix it down through a proper dub desk: send delay and reverb per instrument, sweep a King Tubby–style resonant filter across any bus, throw in siren stabs, and pass your mic straight through the board. Cut instruments in and out live, capture the whole pass with one-tap dub recording, and keep multiple mix versions of the same riddim. No subscriptions — just a warm, hand-tuned instrument built for the sound of the desk.

Screenshots

JAX ONE XModulator Extended4 screens
TowerDub4 screens

Verdict

The call

The clearest difference is price: TowerDub at $9.99 against JAX ONE XModulator Extended's $12.99. JAX ONE XModulator Extended's advantage is iOS requirement (14.0 vs 17.0). On update cadence, ads, in-app purchases and device support 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

JAX ONE XModulator Extended costs $12.99 and TowerDub $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 19, 2026 and October 23, 2026 respectively.

Scorecard2 real differences · 8 level
JAX ONE XModulator Extended versus TowerDub: the parameters behind the verdict, then further details
ParameterJAX ONE XModulator ExtendedTowerDub
Price$12.99$9.99 — better
Rating4.0 (2 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 4 daysEvery 4 days
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better17.0
Further details — not scored
Size32 MB2 MB
Age rating4+4+
DeveloperJens GuellAdrien de Quatrebarbes

In-app purchases

None

JAX ONE XModulator Extended

No in-app purchases

None

TowerDub

No in-app purchases

Questions

Is JAX ONE XModulator Extended free?
JAX ONE XModulator Extended costs $12.99, with no in-app purchases.
Is TowerDub free?
TowerDub costs $9.99, with no in-app purchases.
Do JAX ONE XModulator Extended or TowerDub have ads?
Neither JAX ONE XModulator Extended nor TowerDub shows ads.
Which is updated more often, JAX ONE XModulator Extended or TowerDub?
JAX ONE XModulator Extended ships an update every 4 days, and TowerDub every 4 days. Most recently, JAX ONE XModulator Extended was updated on October 19, 2026 and TowerDub on October 23, 2026.

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