--- title: "frekvens — App Overview" url: https://marlvel.ai/apps/frekvens category: Music developer: Erik Sigth platforms: ios rating: 4.8 (20 ratings) pricing: paid report_level: overview generated: 2026-04-24 last_verified: "2026-04-24T01:10:44.832Z" --- > **Key Insight:** Frekvens is a highly specialized, efficient creative tool for experimental sound design, though users note potential UI responsiveness issues. | Metric | Value | |--------|-------| | Category | Music | | Rating | 4.8 ★ (20) | | Pricing | paid | | Platforms | iOS | | Latest Version (iOS) | 1.3.16 | | Developer | Erik Sigth | ## What is frekvens? Frekvens is a specialized audio effect processor that combines linear frequency shifting with a stereo delay unit. It utilizes single sideband modulation via Hilbert transform and IIR filters to provide unique sound manipulation capabilities for music producers. The app integrates into mobile production workflows through Audio Unit extension, Audiobus, and Inter-App Audio support. ## Key Features - **Frequency Shifter**: Performs linear frequency shifting using single sideband modulation and Hilbert transform. - **Stereo Delay**: Features a feedback-based delay unit with LFO modulation for the play head. - **Filter Suite**: Includes dedicated high-pass and low-pass filters for precise frequency shaping. - **DAW Integration**: Supports Audio Unit extension, Audiobus, and Inter-App Audio for seamless integration into mobile recording environments. ## Who is it for? Music producers and sound designers looking for creative, experimental audio processing tools on iOS. ## Links - [App Store](https://apps.apple.com/us/app/frekvens/id1062305416?uo=4) - [Full Intelligence Report](https://marlvel.ai/apps/frekvens) --- *This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/frekvens).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*