Comparison

SP6 Sound Editor vs Legend '70s Editor

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

Head to head
About

SP6 Sound Editor

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This is Kurzweil SP6 Sound Editor for iPad. Some of SP6 Sound 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 SP6 Programs. •MIDI Continuous Controller tools and Virtual Parameter Table display. •Real time editing of all SP6 Multi Mode parameters. •Import of Multi Zones from other SP6 Multi. •Transmitting and receiving of Programs, Multi, 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 SP6 Sound Editor is an app for iPad only. Kurzweil and SP6 are trademarks of Young Chang Co., Ltd. Soundtower is a trademark of Soundtower Inc.

About

Legend '70s Editor

This application provides real-time control over sound and effects for a specific instrument series. It allows users to adjust parameters, save and load custom programs, and create song lists for live performances. The interface is designed to be simple and adaptable.

Highlights
  • Real-time sound parameter adjustment
  • Real-time effects parameter adjustment
  • Save and load custom instrument programs
  • Create and rearrange song lists
  • Dedicated live performance settings
  • Adaptable user interface
Features
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Legend '70s Editor allows real-time adjustment and storage of all the sound generation parameters and effects of the Legend '70s series instruments. In addition to this, it allows you to modify parameters that are not present in the instrument, to save the modified programs in your device and to reload them quickly. Moreover, it provides dedicated settings for live performance. Legend '70s Editor comes with a clear and simple user interface, adaptable to any screen resolution. Specifically, Legend '70s Editor allows you to: - Adjust all sound parameters; - Adjust all effect parameters; - Adjust the physical model parameters of the E.Piano module; - Adjust the physical model parameters of the Clavi module; - Adjust the additional parameters of the A.Piano module; - Adjust all system settings; - Save and load programs; - Create and rearrange song lists; - Recall any program or song during the performance quickly and easily. - Create 2 live sets with a selection of 24 programs. How it works: - Connect your device to the Legend '70s by a USB cable and the Camera Connection Kit. - Press the [CONNECT] button in the app to connect to the instrument. - Select the desired environment from the top bar by pressing the menu buttons. For more information about Legend '70s Editor, please download the guide from the site: www.viscountinstruments.com/instrument/legend-70s-editor

Verdict

The call

SP6 Sound Editor and Legend '70s Editor are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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.

UpkeepUpdate frequency

SP6 Sound Editor ships an update every 5 months, Legend '70s Editor every 3 months. The most recent releases landed on September 10, 2026 and June 9, 2026 respectively.

ScorecardNo meaningful differences
SP6 Sound Editor versus Legend '70s Editor: the parameters behind the verdict, then further details
ParameterSP6 Sound EditorLegend '70s Editor
PriceFreeFree
Rating5.0 (2 ratings) — better
Positive reviews100.0% of reviews
Number of ratings2 — better
Update frequencyEvery 5 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree
DevicesiPadiPad
Requires iOS8.0 — better9.2
Further details — not scored
Size35 MB9 MB
Age rating4+4+
DeveloperSoundTower Inc.Viscount Int.

In-app purchases

None

SP6 Sound Editor

No in-app purchases

None

Legend '70s Editor

No in-app purchases

Questions

Is SP6 Sound Editor free?
SP6 Sound Editor is free to download, with no in-app purchases.
Is Legend '70s Editor free?
Legend '70s Editor is free to download, with no in-app purchases.
Do SP6 Sound Editor or Legend '70s Editor have ads?
Neither SP6 Sound Editor nor Legend '70s Editor shows ads.
Which is updated more often, SP6 Sound Editor or Legend '70s Editor?
SP6 Sound Editor ships an update every 5 months, and Legend '70s Editor every 3 months. Most recently, SP6 Sound Editor was updated on September 10, 2026 and Legend '70s Editor on June 9, 2026.

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