Comparison

Undulator vs Blackice Beta Gamma

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

Head to head
About

Undulator

This app offers a classic modulated tremolo effect inspired by a renowned hardware processor. It allows musicians to add rhythmic movement, ethereal feedback, and detuned echoes to various instruments and samples, creating evolving soundscapes and dynamic textures.

Highlights
  • Modulated tremolo effect
  • Ethereal feedback and detuned echoes
  • AM/FM modulation
  • Tempo sync
  • Real-time ribbon control
  • Multiple modulation waveforms
Read full description

Undulator is Eventide’s classic modulated tremolo effect from the iconic H3000 effects processor. This unique, rhythmic effect combines ethereal feedback and detuned echos, run through an AM / FM modulated tremolo. Whether used for manipulating samples or adding movement to strings, pads, guitars, and keys, Undulator is a muse for creative musicians. Add Undulator into your plug-ins collection for the most playable tremolo-style effect on your DAW or iOS device. Undulator excels at evolving pads, sync’d chops, and time-lapsing dreamy soundscapes. Combined with a multi-tap delay and powerful tremolo, Undulator’s controls give any sound sustain and shape. This is perfect for transforming ordinary synths, keys, guitars, and even vocals into evolving pads, tempo synced production elements, or ethereal and fluctuant delays. Simply put, Undulator can make shorter sounds into longer layered effects, and give sustaining sounds shape and rhythmic character. Use the Ribbon to morph tremolo patterns into vacillating and varying rhythmic territories. This can be effective for calling attention to synth pads and creating a state of flux or rarity which is otherwise arduous to achieve. - Turn up the MIX to increase the dry/effect ratio. - Utilize multiple modulation waveform shapes and sources to alter the rhythmic feel. - Subtly finesse detuning of delays by using SPREAD. - Add FEEDBACK to accentuate delays or create infinite loops. - The Secondary LFO determines how fast the depth and speed modulation “wiggle” their targets. - Lock the tremolo to tempo using SYNC. - RETRIG at the top of the waveform for a more predictable effect. - RIBBON lets you ‘play’ the effect in real-time and provides dynamic and fluid control to morph back and forth between the settings of your choice. - SLOW/FAST button toggles on a “Slow LFO” mode. Holding it down to “BRAKE” temporarily slows down the LFOs at a constant rate until released. - Update the tremolo speed in real time using the TAP button. - Available as an AUv3 plug-in and Standalone App.

About

Blackice Beta Gamma

This app provides a virtual bass amplifier with a modern-classic sound. It features a custom overdrive/distortion circuit, a VCA compressor, and a six-band graphic equalizer for tone sculpting. It also includes a noise gate and a complete recording chain emulation.

Highlights
  • Virtual bass amplifier
  • Overdrive/distortion circuit
  • VCA compressor
  • Six-band graphic equalizer
  • Noise gate
  • Recording chain emulation
Features
Read full description

The most modern bass tones are characterized by a dynamic and complex sound obtained using different tools and recording techniques. For this reason Nembrini Audio has decided to create the Blackice Beta Gamma Bass Amplifier plugin based on modern-classic 900 watt bass guitar head and complete it with a virtual recording chain worthy of the best recording studios. This innovative bass amplifier combines a custom tuned overdrive/distortion circuit, a studio-grade VCA compressor and a flexible six band graphic equalizer. In the amp section you can blend the clean signal with the incredible Beta Gamma Distortion circuit that can morphs from tight and defined overdrive to raw and brutal distortion. A custom VCA style compressor allows you to optimize the bass signal before hitting the six band graphic equalizer carefully tuned to sculpt your bass tone. The Blackice Beta Gamma Bass Amplifier includes a complete recording chain emulation and our custom design noise gate circuit. Works as a standalone app, AudioUnit v3 effect, or Inter-App Audio effect

Screenshots

Undulator3 screens
Blackice Beta Gamma1 screens

Verdict

The call

The clearest difference is rating: Blackice Beta Gamma at 4.7 against Undulator's 4.3. Blackice Beta Gamma also leads on review sentiment (100% vs 86%). Undulator's advantage is update cadence (every 2 months vs every 4 months) and price ($7.99 vs $9.99). On ratings volume, ads, in-app purchases and monetization model 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

Undulator costs $7.99 and Blackice Beta Gamma $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Blackice Beta Gamma holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 12 and 9 respectively. Written reviews point the same way: 86% of Undulator's written reviews are positive against 100% of Blackice Beta Gamma's.

UpkeepUpdate frequency

Undulator ships an update every 2 months, Blackice Beta Gamma every 4 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
Undulator versus Blackice Beta Gamma: the parameters behind the verdict, then further details
ParameterUndulatorBlackice Beta Gamma
Price$7.99 — better$9.99
Rating4.3 (12 ratings)4.7 (9 ratings) — better
Positive reviews85.7% of reviews100.0% of reviews — better
Number of ratings12 — better9
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15
Further details — not scored
Size16 MB30 MB
Age rating4+4+
DeveloperEventideNembrini Audio

Customer experience

Undulator

All ratings11 ratings
Positive81.8%
Neutral0.0%
Negative18.2%
Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

Blackice Beta Gamma

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Undulator

No in-app purchases

None

Blackice Beta Gamma

No in-app purchases

Questions

Is Undulator free?
Undulator costs $7.99, with no in-app purchases.
Is Blackice Beta Gamma free?
Blackice Beta Gamma costs $9.99, with no in-app purchases.
Which has better reviews, Undulator or Blackice Beta Gamma?
Blackice Beta Gamma is rated higher. Undulator averages 4.3 out of 5 from 12 ratings, while Blackice Beta Gamma averages 4.7 from 9 ratings.
Do Undulator or Blackice Beta Gamma have ads?
Neither Undulator nor Blackice Beta Gamma shows ads.
Which is updated more often, Undulator or Blackice Beta Gamma?
Undulator ships an update every 2 months, and Blackice Beta Gamma every 4 months. Most recently, Undulator was updated on November 3, 2026 and Blackice Beta Gamma on November 5, 2026.

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