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BassFlex vs Scoring Bass

Heavyocity Scoring Bass and BassFlex are both bass instruments, but Scoring Bass is aimed at scoring. It's a Kontakt library from Heavyocity with playable bass guitars, pads, rhythmic pulses and pedals, and effects, for film and TV scores. BassFlex is a plain bass instrument for Windows, modeled, not sampled: presets for electric, acoustic and upright basses, a 24.3 MB download, $79.

What they have in common

A playable bass guitar. Scoring Bass has an instrument with three bass guitars. BassFlex has electric, acoustic and upright presets.
A standalone program and a plugin. Scoring Bass lists standalone, VST, AU and AAX through Kontakt. BassFlex has its own standalone program and a VST3 plugin.

Where Scoring Bass stands out

More than a bass guitar. 4 GB of pads, tempo-synced pulses and pedals, and multi-sampled playable instruments, with 48 core and 48 effected rhythmic pedals.
Motion. 300+ Motion presets, and a Motion page for volume, pitch and pan patterns.
Playable Trigger FX.
Kontakt. It opens in Kontakt (version 6 Player or later) beside your other libraries.
AU and AAX plugins. Its page lists them, along with older systems, so check the page for what it supports now.

Where BassFlex stands out

Nothing else to install. Scoring Bass needs Kontakt 6 (Player) or later. BassFlex needs no other program.
Small. A 24.3 MB download. Scoring Bass is 5.7 GB uncompressed, 3.9 GB compressed.
Acoustic and upright basses, as well as electric, with four strings and five in some presets.
Shaped by hand. Over 70 sliders, and four slots (A to D) to switch between sounds or layer them.
Your song to a file. It renders a MIDI file to FLAC, or to WAV with the included command-line renderer.
No account. A license key and your email address, entered once for each Windows user on each computer, no online activation, one license for one person, to use on all of their own computers, and it never connects to the internet. Heavyocity watermarks each download.
Articulations from ComposerFlex, our songwriting program: palm mute, hammer-on, pull-off, slide, bend, vibrato, harmonic, slap and pop. BassFlex has no patterns, pulses or keyswitches of its own: parts come from ComposerFlex, a MIDI file or the player.
$79, where Scoring Bass is $99 at list price.

Which to pick

For scoring, with pads, pulses and pedals around the bass: Scoring Bass.
If you already work in Kontakt, or want AU and AAX: Scoring Bass.
For a bass instrument alone: BassFlex.
On Windows, with a small download, no account and a price of $79: BassFlex.

Owning both

Scoring Bass brings the scoring material and BassFlex brings the bass you can shape, and they can sit in one project. Heavyocity's page we read doesn't state a trial, so check it before you buy; BassFlex's demo, which you can download and try before you buy, is here. This page doesn't compare how they sound. That's for your ears.

The facts side by side

Every fact about Scoring Bass is from Heavyocity's own pages, checked on 7 November 2026. Prices are list prices in US dollars; sales come and go.

	BassFlex	Scoring Bass
How it makes its sound	Modeled. It computes every note as you play, from the physics of plucked strings: the upright and acoustic basses sound through the body, and the electric basses through a pickup, some of them with a bass amp and cabinet. It plays no recordings.	Sampled: multi-sampled bass guitars, treated and processed by the maker's sound designers (the maker's words), for film and TV scores.
Price	$79, one-time	$99 list; $39 in the Fall Sale shown on 7 November 2026
Download and disk space	24.3 MB download, 50.6 MB installed	5.7 GB uncompressed (3.9 GB compressed); direct download only
Memory the maker asks for	4 GB, with 4 cores or more and 100 MB of disk (the minimum we state for every Flex program)	2 GB of RAM (from a requirements list that names older systems)
Runs on	Windows 10 and 11, 64-bit	The maker's page lists Windows 7, 8 or 10 and macOS 10.12 to 10.14: an old list, so check before you buy
Forms	Standalone and VST3	Standalone, VST, AU, AAX (as the maker's page lists them)
Needs another program	Nothing else	Kontakt 6 (Player) or later
Copy protection	A license key and your email address, entered once for each Windows user on each computer. No account and no online activation.	Watermarked for each customer (the maker's page has a Watermarking section)
Computers per license	One license for one person, to use on all of their own computers	Not stated on the maker's pages
Demo	A demo to download and try before you buy	Not published
Basses included	Presets for electric bass, acoustic bass guitar and upright bass; four slots to layer sounds	One Playable Basses instrument with three multi-sampled bass guitars, plus pads, tempo-synced pulses and pedals, and 300+ Motion presets

More: virtual basses compared: modeled and sampled, a table of 15 products, and all about BassFlex.

If something here is out of date, write to [email protected] and we'll correct it.

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