Positive Grid Inc

7 apps seen in App Store top charts, 2 charting now. Together they collect about 37 new ratings a week on the App Store.

App	Category	Released	Best rank now	Rating	New ratings a week
JamUp Pro	Music	21 Oct 2011	#40	★ 4.4	–
Spark: Chords, Backing Tracks	Music	29 Jan 2020	#150	★ 4.8	37 · 77
BIAS FX 2 - #1 Guitar Tone App	Music	20 May 2020	not charting	★ 4.7	–
BIAS Pedal	Music	29 Oct 2015	not charting	★ 3.6	–
BIAS FX - Guitar Amp & Effects	Music	28 Apr 2015	not charting	★ 4.6	–
BIAS AMP 2 - for iPhone	Music	20 Feb 2014	not charting	★ 4.4	–
BIAS AMP 2 - for iPad	Music	13 Nov 2013	not charting	★ 4.6	–

Also on Google Play: Positive Grid LLC

Positive Grid Inc: releases, featuring and milestones across their App Store apps

Last change 12 Oct 2026 · 8 events since 21 Oct 2011Full timeline ↓

Full timeline · 8 events

12 Oct 2026
📈
BIAS FX 2 - #1 Guitar Tone App · Dropped out of every chart we trackiOS
Last seen 11 Oct
20 May 2020
🆕
BIAS FX 2 - #1 Guitar Tone App · Released on the App StoreiOS
29 Jan 2020
🆕
Spark: Chords, Backing Tracks · Released on the App StoreiOS
29 Oct 2015
🆕
BIAS Pedal · Released on the App StoreiOS
28 Apr 2015
🆕
BIAS FX - Guitar Amp & Effects · Released on the App StoreiOS
20 Feb 2014
🆕
BIAS AMP 2 - for iPhone · Released on the App StoreiOS
13 Nov 2013
🆕
BIAS AMP 2 - for iPad · Released on the App StoreiOS
21 Oct 2011
🆕
JamUp Pro · Released on the App StoreiOS

Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.

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Portfolio-wide download estimates, top grossing positions and new-launch alerts for Positive Grid Inc.

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