Comparison

Transposer Pro vs DelayScaper

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

Head to head
About

Transposer Pro

Features
Read full description

This app is designed to show how a note written for a given instrument (e.g. a Clarinet in Bb) would be written on another instrument (e.g. a Horn in F). - Intended for music students, conductors, composers and anybody who wants to get quicker at reading scores - Choose from over 100 instruments to transpose - many with configurable keys and clefs - Use the slider to interactively see the result of the transposition - Includes info on instrument ranges and transposition properties - Supports 4 clefs (automatically selected based on instrument conventions and register) - Includes guidance on the fundamentals of reading transposing instruments - Supports dark and light themes

About

DelayScaper

This audio effects plugin offers dual dynamic stereo delays that respond to input intensity and note spacing. It allows for experimental sound design, atmospheric textures, and even looping, with bonus effects like octave pitch-shifting and random reversing.

Highlights
  • Dual stereo delay modules
  • Dynamic parameter response to audio input
  • Host tempo syncable delay times
  • Max 8-second delay time
  • Octave Grains effect
  • Random Reverse effect
  • Envelope followers for modulation
Read full description

DelayScaper is an AUv3 effects plugin that can run standalone, or in any AUv3 compatible host such as Logic Pro, GarageBand or AUM. DelayScaper currently runs on iOS (iPad & iPhone) and macOS (Intel & Silicon) and is available as a Universal Purchase from the Apple App Store. Overview DelayScaper is a dual dynamic delay effect designed to produce inspiring, and sometimes very unpredictable results that literally responds dynamically to audio input. Playing an instrument through DelayScaper can be especially rewarding when you adjust your playing to what you’re hearing, because DelayScaper can be configured to constantly modify its parameters according to the intensity and spacing of your notes. It’s like having five extra pairs of hands twiddling knobs for you! At its core, DelayScaper comprises two identical stereo delay modules that can run in series or parallel. While it can cover “normal” delay duties, including host tempo syncable delay times, DelayScaper is really for those who like to experiment with sound, especially in the atmospheric and ambient realm. With a maximum delay time of 8 seconds, you can even use DelayScaper as an old-school “free looper” for “Frippertronics” type evolving soundscapes. DelayScaper also features two bonus “one knob FX” effects that are both original designs that complement the core delay processing: “Octave Grains” is a randomised and delayed pitch-shifting algorithm that sits somewhere between a pitch-shifted delay and granular shimmer effect. “Random Reverse” does what you might expect it to do, but often in an unexpected way! Both algorithms will grab random sections of the incoming audio, process it, then feed those into the main delay processing. The dynamics section is where DelayScaper comes to life, and includes dedicated envelope followers for both delays, which can then be used as a modulation source for up to 5 delay parameters for each delay. For example, you can modulate the mix level to create a “ducking delay”, or modulate tone so the delay repeats get brighter or darker depending on how hard or softly you play. A “cascade” feature sends the output of the first delay into the second, allowing you to fine-tune the balance between parallel and series mode.

Screenshots

Transposer Pro4 screens
DelayScaper2 screens

Verdict

The call

The clearest difference is update cadence: DelayScaper at daily against Transposer Pro's every 11 months. DelayScaper also leads on device support (4 vs 2) and iOS requirement (12.0 vs 16.3). Transposer Pro's advantage is price ($0.99 vs $4.99). On ads and in-app purchases 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

Transposer Pro costs $0.99 and DelayScaper $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Transposer Pro ships an update every 11 months, DelayScaper daily. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.

Scorecard4 real differences · 6 level
Transposer Pro versus DelayScaper: the parameters behind the verdict, then further details
ParameterTransposer ProDelayScaper
Price$0.99 — better$4.99
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 11 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS16.312.0 — better
Further details — not scored
Size3 MB18 MB
Age rating4+4+
DeveloperMatt WelchRob Jackson

In-app purchases

None

Transposer Pro

No in-app purchases

None

DelayScaper

No in-app purchases

Questions

Is Transposer Pro free?
Transposer Pro costs $0.99, with no in-app purchases.
Is DelayScaper free?
DelayScaper costs $4.99, with no in-app purchases.
Do Transposer Pro or DelayScaper have ads?
Neither Transposer Pro nor DelayScaper shows ads.
Which is updated more often, Transposer Pro or DelayScaper?
Transposer Pro ships an update every 11 months, and DelayScaper daily. Most recently, Transposer Pro was updated on November 8, 2026 and DelayScaper on November 10, 2026.

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