Comparison

PC3K Sound Editor vs KeyStage Lite

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

Head to head
About

PC3K Sound Editor

This tool allows for the editing and manipulation of sound programs and setups for the Kurzweil PC3K synthesizer. It offers real-time parameter adjustments, layer management, and data transfer capabilities directly from an iPad.

Highlights
  • Program Channel Mixer
  • Program Common parameter editing
  • Program Layer manipulation
  • MIDI Continuous Controller tools
  • Real-time Setup Mode parameter editing
  • Import Setup Zones
  • Transmit and receive data
Read full description

PC3K Sound Editor is a Sound Development tool created specifically for Kurzweil PC3K keyboard/synthesizer. It requires a Kurzweil PC3K keyboard.   Some of PC3K Editor's features now include:   •Program Channel Mixer •Editing of Program Common parameters including Insert and Aux FX selectors •Basic Program Layer manipulation. Copy and paste of Layers from other PC3K Programs •MIDI Continuous Controller tools and Program Info display •Real time editing of all PC3K Setup Mode parameters •Import of Setup Zones from other PC3K Setups •Transmitting and receiving of Programs, Setups, FX Chains and other objects data •On-screen keyboard •Direct USB/MIDI connection with Apple iPad Camera Adapter •Wireless connection possible using MIDI network   This PC3K Editor is an app for iPad only. Kurzweil and PC3K is are trademarks of Young Chang Co., Ltd. Soundtower is a trademark of Soundtower Inc.

About

KeyStage Lite

This app acts as a master controller and audio mixer for keyboard players. It allows simultaneous control of multiple hardware and software instruments using various MIDI controllers. Organize songs into sections, customize instrument sounds, and manage MIDI mappings with advanced scripting capabilities.

Highlights
  • Control multiple MIDI controllers and instruments
  • Host AUv3 instruments and effects
  • Create complex keyboard splits and layers
  • Advanced MIDI mapping and scripting
  • Audio mixer with track control
  • Play and manage audio files
  • View PDF and JPG files
Read full description

KeyStage is a master controller, AUv3 host, and audio mixer app designed mainly for keyboard players. With KeyStage, you can simultaneously control any number of hardware and software instruments using any number of MIDI controllers in an organized way. Each project consists of sections (which corresponds to sections of a song). In each section you can change sounds and sound parameters of connected instruments, create complex splits and layers of your keyboard(s), change the functionalities of sliders/knobs/pedals of your MIDI controllers by creating advanced MIDI mappings, write your own scripts, view PDF and JPG files (e.g. sheet music) and lyrics, and much more. LIST OF FEATURES • Connect any number of MIDI controller to any number of MIDI instruments by creating tracks. • Load AUv3 instruments, effects, and MIDI Processors. • Assign any region of your keyboard(s) to any connected instrument. • Change velocity curve and velocity limits, and create velocity splits and layers. • Transpose notes and restrict notes to any key using pitch shifter. • Create mixer units to combine audio signals, turning KeyStage into an audio mixer. • With the player units, you can play wav, mp3, and m4a files, add marker points, automate actions (like play, stop, move to a marker etc.) using custom translators, or trigger certain events (like changing sections) when the player reaches a certain marker. • Input units allows you to use the microphone input, or the hardware inputs of a connected audio interface. • The Main Mixer view allows you to control volume levels and pans of all tracks, connect effect units, and connect units to mixer units. • Create instrument presets to easily change sounds of instruments by choosing patch names from patch lists. • KeyStage can also import Cubase Patch Scripts to automatically create instrument presets for your MIDI instruments. • KeyStage automatically detects new MIDI connections and recommends matching instrument presets from a database. • Simulate auto-sustain on any connected instrument. • KeyStage has a multi-track recorder, which lets you record any number of tracks simultaneously. • Change or filter any MIDI signal using custom translators. Use “Relative Control” switch to smoothly change the parameters of your instruments without any jumps. • Use XY control unit to send control change and pitch bend messages to any connected MIDI instrument. • Create setlists, quick access all the songs in a setlist from a setlist bar, move to previous/next songs from live console or using external MIDI. • Create virtual MIDI inputs/outputs for KeyStage. • Use virtual MIDI piano controller to play connected instruments. • View PDF and JPG files. Link any page or region of any file to any section. • Backup and restore your songs and global properties to Dropbox. • Map special actions (like changing octaves, switching sections, changing pages of a PDF file) to notes and controllers using custom translators. • You can write your own scripts in custom translators, which opens up endless possibilities. • Use MPE routing to control any MIDI instrument using MPE controllers like Seaboard. Use custom translators to change the functionalities of each MPE dimension. • KeyStage supports smooth transitions between sections. Pressed notes will continue to sound when you switch sections. You can access demo videos and video tutorials on my Youtube channel.

Verdict

The call

The clearest difference is rating: PC3K Sound Editor at 5.0 against KeyStage Lite's 4.0. PC3K Sound Editor also leads on iOS requirement (8.0 vs 13.0). KeyStage Lite's advantage is ratings volume (7 vs 2). On price, review sentiment, update cadence and ads 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

PC3K Sound Editor holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews point the same way: 67% of PC3K Sound Editor's written reviews are positive against 60% of KeyStage Lite's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on June 2, 2026 and September 19, 2026 respectively.

Scorecard3 real differences · 7 level
PC3K Sound Editor versus KeyStage Lite: the parameters behind the verdict, then further details
ParameterPC3K Sound EditorKeyStage Lite
PriceFreeFree
Rating5.0 (2 ratings) — better4.0 (7 ratings)
Positive reviews66.7% of reviews — better60.0% of reviews
Number of ratings27 — better
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPad
Requires iOS8.0 — better13.0
Further details — not scored
Size40 MB61 MB
Age rating4+4+
DeveloperSoundTower Inc.Ali Gokturk

Customer experience

PC3K Sound Editor

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

KeyStage Lite

All ratings7 ratings
Positive71.4%
Neutral0.0%
Negative28.6%
Written reviews5 reviews
Positive60.0%
Neutral0.0%
Negative40.0%

In-app purchases

None

PC3K Sound Editor

No in-app purchases

None

KeyStage Lite

No in-app purchases

Questions

Is PC3K Sound Editor free?
PC3K Sound Editor is free to download, with no in-app purchases.
Is KeyStage Lite free?
KeyStage Lite is free to download, with no in-app purchases.
Which has better reviews, PC3K Sound Editor or KeyStage Lite?
PC3K Sound Editor is rated higher. PC3K Sound Editor averages 5.0 out of 5 from 2 ratings, while KeyStage Lite averages 4.0 from 7 ratings.
Do PC3K Sound Editor or KeyStage Lite have ads?
Neither PC3K Sound Editor nor KeyStage Lite shows ads.
Which is updated more often, PC3K Sound Editor or KeyStage Lite?
PC3K Sound Editor ships an update every 3 months, and KeyStage Lite every 3 months. Most recently, PC3K Sound Editor was updated on June 2, 2026 and KeyStage Lite on September 19, 2026.

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