Comparison

Osculatrix vs GainX2

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

Head to head
About

Osculatrix

This audio effect plugin offers modulated filters, delays, and saturation for creative sound design. It can transform audio from subtle coloration to complete destruction. Use it within your favorite music production apps.

Highlights
  • Modulated filters
  • Delay effects
  • Saturation
  • AUv3 plugin
  • Subtle coloration to destruction
Features
Read full description

Osculatrix is a tremolo with ideas above its station. With modulated filters, delays, a bit of saturation. Like its predecessors, it is cryptic and opinionated, and it goes from subtle colouration to total destruction at the twist of a knob. Osculatrix is an AUv3 effect plugin. It does nothing on its own. Use it in GarageBand, AUM or your favourite audio application. Osculatrix does not want your money and it doesn't want your data. It is 100% free. No ads, no in-app purchases, no subscriptions, no surveillance, no nag screens.

About

GainX2

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GainX2 Dual Gain Utility Plugin (AUv3) GainX2 is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic Pro or GarageBand. Overview GainX2 is a gain utility primarily designed for use during live performances within an AU host controlled via MIDI CC (*). You can use GainX2 as a "helping hand" to mute or unmute channels, smoothly fade between them, or add additional switchable gain before a guitar amp sim. You could even use GainX2 to automate a one minute fade out at the end of a performance! GainX2 also includes a master volume with variable taper and optional damping. This feature is useful when controlling volume via a MIDI controller in your host, and avoids the "stepping" effect that you sometimes get when mapping MIDI CCs to a volume parameter. NOTE: If all this talk of MIDI CCs isn't making sense, or you primarily make music in a more traditional DAW such as GarageBand or Logic, then you probably won't find GainX2 very useful. Alternatively, if you like to perform live with an iPad and use something like AUM or Loopy Pro, then you might be glad of a "helping hand" to control gain dynamically and smoothly via MIDI. (*) Please note that GainX2 does not have a "MIDI learn" function of its own, so your host needs to support the mapping of plugin parameters to incoming MIDI CC messages. A B Indicators Above the view selector are indicators to show which gain setting is active, and these will be animated according to the fade time so you can see the transition between the two settings. Please note these are not interactive buttons that you click on. Controls Gain - Switch between Gain A and Gain B. Typically, you would map this parameter in your host to a MIDI CC switch (0 or 127) in your host. Note that at start up, GainX2 will default to the A setting, so you should think of this as the default state that you want. Gain A/B - Set the level of A or B. At minimum setting, this is essentially silence which is useful for fade or mute type applications. Please note that GainX2 can boost the incoming signal up to 12dB which could result in clipping, so please monitor, and be careful with your levels. Fade - Sets a linear (Lin) or exponential (Exp) fade between A and B. Exponential typically works best for a more natural sounding attack or decay. Time - Sets the time to Fade between Gain A and B. Volume - Sets the master volume. Typically you would map this parameter in your host to a MIDI CC (0 - 127). Taper - Sets the taper of the volume smoothing to linear (Lin) or exponential (Exp). Sometimes exponential will work better for CCs that are being controlled via MIDI expression pedals. Damping - Sets a variable damping or smoothing time to the volume control. This is useful if you hear "stepping" or sudden jumps when the Volume parameter is being controlled via MIDI. For more info and support please visit: www.waverley-instruments.com/robjackson

Screenshots

Osculatrix2 screens
GainX24 screens

Verdict

The call

The clearest difference is price: Osculatrix at Free against GainX2's $1.99. GainX2's advantage is update cadence (every 5 days vs monthly) and iOS requirement (12.0 vs 15.0). On 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

Osculatrix is free to download; GainX2 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Osculatrix ships an update monthly, GainX2 every 5 days. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
Osculatrix versus GainX2: the parameters behind the verdict, then further details
ParameterOsculatrixGainX2
PriceFree — better$1.99
Rating5.0 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyMonthlyEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.012.0 — better
Further details — not scored
Size2 MB12 MB
Age rating4+4+
DeveloperMatthew CaldwellRob Jackson

In-app purchases

None

Osculatrix

No in-app purchases

None

GainX2

No in-app purchases

Questions

Is Osculatrix free?
Osculatrix is free to download, with no in-app purchases.
Is GainX2 free?
GainX2 costs $1.99, with no in-app purchases.
Do Osculatrix or GainX2 have ads?
Neither Osculatrix nor GainX2 shows ads.
Which is updated more often, Osculatrix or GainX2?
Osculatrix ships an update monthly, and GainX2 every 5 days. Most recently, Osculatrix was updated on November 2, 2026 and GainX2 on November 5, 2026.

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