About frekvens
Frekvens is a frequency shifter and delay effect. Unlike a pitch shifter all frequencies are shifted linearly and then fed back into itself using the stereo delay unit. The frequency shifting is achieved with single...
Frekvens is a frequency shifter and delay effect. Unlike a pitch shifter all frequencies are shifted linearly and then fed back into itself using the stereo delay unit. The frequency shifting is achieved with single sideband modulation using a hilbert transform and an infinite impulse response filter for fast computations. Frekvens also comes with a high and low pass filter and a lfo for modulating the delay play head. - frequency shifter - high, low pass filter - stereo delay - core midi cc input - audiobus - inter app audio - audio unit extension - save, load
Version History + Fixing graphical issues in seen menus on iOS 26. 1.3.16 11/25/2025 + Stability fixes. + Fixing issue handling audio events with an incorrect timestamp. 1.3.15 11/18/2025 +++ Fixing stability issues. 1.3.14 07/01/2024 +++ Fixing issue with some devices that only process audio in mono. 1.3.13 01/24/2021 +++ Updating audio engine to improve IAA compatibility with iOS 12.4 and up. 1.3.12 08/09/2020 +++ Adding fix for IAA audio issues starting in iOS 12.4. +++ Updating popovers for iOS 13. +++ Fixing colour issues for dark mode in iOS 13. +++ Improving delay buffer scaling. 1.3.11 10/25/2019 +++ Fixing AUv3 state saving issue. 1.3.10 02/16/2018 +++ Fixing au parameter writable flag issue. +++ Minor bug fixes. 1.3.9 02/07/2018 +++ improving AUv3 experience with some hosts. 1.3.8 08/02/2017 +++ Fixing 4800Hz sample rate buffer issue. 1.3.7 02/13/2017 +++ Fixing AUv3 load issue in Garage Band. 1.3.6 02/06/2017 +++ Fixing minor AUv3 bugs.. 1.3.5 02/03/2017 +++ Adding haQ speak n spell preset. 1.3.4 08/04/2016 +++ Fixing occasional splash screen orientation quirk. +++ Fixing midi channel settings bug. 1.3.3 06/10/2016 +++ Improving filter stability. +++ Fixing AUv3 UI/parameters connection issue seen by some. +++ Fixing minor compressor quirk. +++ Fixing core midi naming bug. 1.3.2 06/01/2016 +++ Fixing AUv3 openGL frame buffer quirk. 1.3.1 05/23/2016 +++ Adding Audio Unit Extension, run frekvens in your favourite host app. +++ Adding Inter App Audio control panel. 1.3 05/20/2016 +++ Updating audiobus to fix iPhone 6S issues. 1.2 03/15/2016 +++ Adding landscape layout on iPad. +++ Adding ability to start from inter app audio host. +++ Adding Audiobus state saving. 1.1 03/02/2016 +++ Fixing iPad Pro layout issue. 1.0.1 02/23/2016 1.0 02/20/2016
Previous Versions
Here you can find the changelog of frekvens since it was posted on our website on 2016-09-24 01:08:46.
The latest version is 1.3.16 and it was updated on 2026-06-23 00:50:25. See below the changes in each version.
frekvens version 1.3.16
Updated At: 2026-05-29
Changes: Version History + Fixing graphical issues in seen menus on iOS 26. 1.3.16 11/25/2025 + Stability fixes.
+ Fixing issue handling audio events with an incorrect timestamp. 1.3.15 11/18/2025 +++ Fixing stability issues. 1.3.14 07/01/2024 +++ Fixing issue with some devices that only process audio in mono. 1.3.13 01/24/2021 +++ Updating audio engine to improve IAA compatibility with iOS 12.4 and up. 1.3.12 08/09/2020 +++ Adding fix for IAA audio issues starting in iOS 12.4.
+++ Updating popovers for iOS 13.
+++ Fixing colour issues for dark mode in iOS 13.
+++ Improving delay buffer scaling. 1.3.11 10/25/2019 +++ Fixing AUv3 state saving issue. 1.3.10 02/16/2018 +++ Fixing au parameter writable flag issue.
+++ Minor bug fixes. 1.3.9 02/07/2018 +++ improving AUv3 experience with some hosts. 1.3.8 08/02/2017 +++ Fixing 4800Hz sample rate buffer issue. 1.3.7 02/13/2017 +++ Fixing AUv3 load issue in Garage Band. 1.3.6 02/06/2017 +++ Fixing minor AUv3 bugs.. 1.3.5 02/03/2017 +++ Adding haQ speak n spell preset. 1.3.4 08/04/2016 +++ Fixing occasional splash screen orientation quirk.
+++ Fixing midi channel settings bug. 1.3.3 06/10/2016 +++ Improving filter stability.
+++ Fixing AUv3 UI/parameters connection issue seen by some.
+++ Fixing minor compressor quirk.
+++ Fixing core midi naming bug. 1.3.2 06/01/2016 +++ Fixing AUv3 openGL frame buffer quirk. 1.3.1 05/23/2016 +++ Adding Audio Unit Extension, run frekvens in your favourite host app.
+++ Adding Inter App Audio control panel. 1.3 05/20/2016 +++ Updating audiobus to fix iPhone 6S issues. 1.2 03/15/2016 +++ Adding landscape layout on iPad.
+++ Adding ability to start from inter app audio host.
+++ Adding Audiobus state saving. 1.1 03/02/2016 +++ Fixing iPad Pro layout issue. 1.0.1 02/23/2016 1.0 02/20/2016
frekvens version 1.3.16
Updated At: 2025-11-25
Changes: + Fixing graphical issues in seen menus on iOS 26.
frekvens version 1.3.14
Updated At: 2024-07-01
Changes: Jul 1, 2024
Version 1.3.14
+++ Fixing stability issues.
frekvens version 1.3.13
Updated At: 2021-01-24
Changes: Jan 24, 2021
Version 1.3.13
+++ Fixing issue with some devices that only process audio in mono.
frekvens version 1.3.4
Updated At: 2016-02-20
Disclaimer
Official App Store Link
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