Comparison

Tachyon vs SL FLUX

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

Head to head
About

Tachyon

This app allows users to blend any two sounds together to create unique musical expressions. Its intuitive interface lets you control pitch and tone independently, offering a mesmerizing visual experience as you play.

Highlights
  • Blend any two sounds
  • Independent pitch and tone control
  • Intuitive touch interface
  • Mesmerizing visual feedback
  • Custom sound library
Features
Read full description

Do you want to play an electric guitar and a piano at the same time? What about choosing the electrifying buzz of a drill and blending it into the soothing tone of a human voice? Jordan Rudess and Kevin Chartier’s Tachyon gives you all these options and more. From the makers of the award winning app, MorphWiz, comes a new creation that allows images and sound to become one as they magically blend under your fingertips. Each note you play is an individual expression, allowing independent control of pitch and tone far beyond that of traditional instruments. Most instruments only allow you to play one sound at a time, but with Tachyon, you can seamlessly blend between any two sounds as you slide your fingers up and down the screen. The visual experience of Tachyon is just as mesmerizing. As you move along the playing surface, a field of twinkling stars morphs into the shape of your selected instrument, allowing a direct correlation between sight and sound. As described by Jordan Rudess, “Tachyon is simple to use and at the same time offers a unique musical expressive power. The sonic core of the app is a custom crafted sound set from my personal library, encompassing sounds as familiar as those you would find in your home toolbox, and as exclusive as the ones I use on tour with Dream Theater." Whether you’re a seasoned musician looking for a next generation instrument to further express your creativity, or just a regular Joe browsing the app store looking for a fun and simple purchase that will delight the whole family, Tachyon is the app for you! “Check out Jordan Rudess’s new album with Steve Horelick entitled “interSonic”which features Wisdom Music Apps”

About

SL FLUX

Features
Read full description

SL FLUX is a creative multi-effect for shaping movement, tone and space in one focused interface. Turn static sounds into evolving textures, rhythmic motion and polished transitions. Designed for fast sound design on iPhone and iPad, SL FLUX works as a standalone app and AUv3 Audio Unit inside compatible hosts. Use it on synths, drums, vocals, samples and full mixes, then automate controls in your DAW for dynamic results. No account, subscription or internet connection is required.

Screenshots

Tachyon4 screens
SL FLUX3 screens

Verdict

The call

The clearest difference is price: Tachyon at $1.99 against SL FLUX's $14.99. Tachyon also leads on iOS requirement (8.0 vs 15.0). SL FLUX's advantage is update cadence (every 9 days vs every 14 months). On ads, in-app purchases 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

Tachyon costs $1.99 and SL FLUX $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Tachyon ships an update every 14 months, SL FLUX every 9 days. The most recent releases landed on November 1, 2026 and November 10, 2026 respectively.

Scorecard3 real differences · 7 level
Tachyon versus SL FLUX: the parameters behind the verdict, then further details
ParameterTachyonSL FLUX
Price$1.99 — better$14.99
Rating3.8 (13 ratings) — better—
Positive reviews77.7% of reviews—
Number of ratings13 — better—
Update frequencyEvery 14 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.0
Further details — not scored
Size12 MB27 MB
Age rating4+4+
DeveloperWizdom Music LLCVIACHESLAV ZHILTSOV

Bugs and requests

Tachyon

Reported bugs

9 issues
  • IAA and Audiobus compatibility issues
  • Does not work with Audiobus
  • Does not launch with Audiobus
  • Inter-app audio and Audiobus connectivity missing
  • Broken on iPad 2 - iOS 7
Show 4 more
  • Not compatible with iOS 11
  • No sound output
  • App doesn't work anymore
  • App is broken

Requested features

18 requests
  • Audiobus and IAA support
  • MIDI support
  • MPE support
  • Ability to record
  • Update for notched iPhones
Show 13 more
  • Keyboard view
  • More sounds/instrument packs
  • Reverb settings
  • User sample import
  • Customizable scales
  • Automation/Arp
  • MIDI control
  • Ability to import sounds from other Wizdom apps
  • Moving filter in FX section
  • Hold button
  • Option to choose backgrounds
  • Lock menu buttons
  • More scales and custom scale creation

SL FLUX

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Tachyon

No in-app purchases

None

SL FLUX

No in-app purchases

Questions

Is Tachyon free?
Tachyon costs $1.99, with no in-app purchases.
Is SL FLUX free?
SL FLUX costs $14.99, with no in-app purchases.
Do Tachyon or SL FLUX have ads?
Neither Tachyon nor SL FLUX shows ads.
Which is updated more often, Tachyon or SL FLUX?
Tachyon ships an update every 14 months, and SL FLUX every 9 days. Most recently, Tachyon was updated on November 1, 2026 and SL FLUX on November 10, 2026.

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