Comparison

GrainProc vs Pinkish Trombone

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

Head to head
About

GrainProc

Create unique sounds and musical textures in real-time by processing external audio. This app features two parallel granular engines for layering sounds, offering a versatile tool for musicians and sound designers.

Highlights
  • Real-time granular synthesis
  • Two parallel grain engines
  • AudioBus input support
  • Waveform sound source manipulation
  • Control over volume, feedback, and density
  • Visual level monitoring
Features
Read full description

GrainProc is a real-time granular synthesizer with which you can create new sounds and musical textures by affecting your voice, your instrument, or any input from AudioBus. 2 grain engines run in parallel, allowing you to layer two sounds and create rich textures, even as a solo performer! Features: • 2 Granular synthesizers running in parallel • Waveform representation of the sound allowing you to touch where you want the sound source to be • Sliders to control dry volume, wet volume, feedback level, and grain density • Visual level monitors of the dry, wet and feedback levels • Simple enough to be used with your feet! We discourage using your device with your feet, though it has been used that way for public performances!

About

Pinkish Trombone

This app is a studio-ready instrument for iOS, expanding on a classic web-based speech synthesizer. It offers multitouch playability with modulation options and automatable parameters, functioning as a standalone app or AUV3.

Highlights
  • Articulatory speech synthesizer
  • Multitouch playability
  • Modulation options
  • Automatable parameters
  • Standalone app
  • AUV3 support
Features
Read full description

Based on Neil Thapen's classic web-based interactive articulatory speech synthesizer, Pink Trombone, Pinkish expands the original into a studio-ready instrument for iOS. While staying faithful to the original's multitouch playability, Pinkish Trombone adds a suite of modulation options and automatable parameters that breath new life into that venerable vocal tract. Pinkish Trombone operates as a standalone app as well as an AUV3 so you can use it in any of your favorite iOS DAW apps. Apple Silicon macOS users can even use it in Ableton Live!

Screenshots

GrainProc4 screens
Pinkish Trombone4 screens

Verdict

The call

The clearest difference is rating: Pinkish Trombone at 5.0 against GrainProc's 4.2. Pinkish Trombone also leads on review sentiment (100% vs 60%) and update cadence (fortnightly vs every 2 months). GrainProc's advantage is ratings volume (18 vs 2) and price ($2.99 vs $4.99). On ads, in-app purchases, monetization model 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

GrainProc costs $2.99 and Pinkish Trombone $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Pinkish Trombone holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: GrainProc has 18 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 60% of GrainProc's written reviews are positive against 100% of Pinkish Trombone's.

UpkeepUpdate frequency

GrainProc ships an update every 2 months, Pinkish Trombone fortnightly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
GrainProc versus Pinkish Trombone: the parameters behind the verdict, then further details
ParameterGrainProcPinkish Trombone
Price$2.99 — better$4.99
Rating4.2 (18 ratings)5.0 (2 ratings) — better
Positive reviews60.0% of reviews100.0% of reviews — better
Number of ratings18 — better2
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size6 MB55 MB
Age rating4+4+
DeveloperMayank SanganeriaAaron Meyers

Customer experience

GrainProc

All ratings16 ratings
Positive75.0%
Neutral6.3%
Negative18.8%
Written reviews30 reviews
Positive60.0%
Neutral13.3%
Negative26.7%

Pinkish Trombone

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

GrainProc

No in-app purchases

None

Pinkish Trombone

No in-app purchases

Questions

Is GrainProc free?
GrainProc costs $2.99, with no in-app purchases.
Is Pinkish Trombone free?
Pinkish Trombone costs $4.99, with no in-app purchases.
Which has better reviews, GrainProc or Pinkish Trombone?
Pinkish Trombone is rated higher. GrainProc averages 4.2 out of 5 from 18 ratings, while Pinkish Trombone averages 5.0 from 2 ratings.
Do GrainProc or Pinkish Trombone have ads?
Neither GrainProc nor Pinkish Trombone shows ads.
Which is updated more often, GrainProc or Pinkish Trombone?
GrainProc ships an update every 2 months, and Pinkish Trombone fortnightly. Most recently, GrainProc was updated on November 1, 2026 and Pinkish Trombone on October 31, 2026.

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