# Sightlines - Harmonic Filter — Musical resonant filter bank > Playable harmonic filter bank for sound design and musical instrument creation. (iPhone/iPad app by Aqeel Aadam.) - Source: https://appshunter.io/ios/app/sightlines-harmonic-filter/id6801937031 (this page in markdown: same URL + `.md`) - Developer: [Aqeel Aadam](https://appshunter.io/developer/1724235864) - Category: Music - Price: $7.99 - Rating: 5.00/5 from 3 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 18 MB - Released: 2026-09-03 - Data updated: 2026-09-05 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/sightlines-harmonic-filter/id6801937031/reviews.md ## What is Sightlines? Make noise, texture, and percussion sing. Add motion and stereo spread to basic sounds. Load samples and sculpt them endlessly. Leave your mark on any sound with harmonic filtering. Sightlines is a playable harmonic filter. Built from a collection of resonant bandpass filters tuned to the harmonic series, designed to bring out a customizable set of musical frequencies in any sound. Tune it to a fixed frequency like a resonator, or send it MIDI to make it come alive as an instrument. Sightlines can be loaded as an instrument or an audio effect. As an instrument, use it with samples, noise, or oscillators to construct sounds never heard before. As an effect, add movement and interest to any sound, and even impart tonality onto unpitched input. SOUND SOURCES • Noise – filter variable color noise and random noise bursts for Sightlines’ simplest and quickest output. • Samples – send samples through resonant filters as one-shots or infinite looping versions of themselves, great for found sound and tonal samples alike. • Synth – skip the filters entirely and use Sightlines as a harmonic synth, where you can customize and modulate the proportion of each harmonic in the signal. • Audio effect – use Sightlines as an audio effect on any track. MOVEMENT AND EFFECTS • Manipulate overtones – stretch, bend, and reimagine the harmonic series to retune Sightlines’ output into realistic or indescribable sonic spaces. • Quantize frequencies – snap all of Sightlines’ filters to a scale, to impart that key quality onto any sound. • Balance bands – maneuver through the harmonic space by scanning, tilting, or spreading Sightlines’ bands. • End of chain – make your output shine with a built-in chorus, BBD-style delay, and reverb. FEATURES • Modulation – modify any control in Sightlines with multiple LFOs, sequencers, smooth random sources, and performance effects. • Presets – full preset control over every parameter in Sightlines. Cross-platform preset format for sharing with friends. • Waymaker – connect to Sightlines’ sibling application, Waymaker, for sequencing and additional control over the pitch of Sightlines’ output. Also available for macOS and Windows in VST3 / AU / AAX formats from Aqeel Aadam Sound. ## Key features - Harmonic filter bank - MIDI control - Sample loading - Noise and synth sound sources - Modulation capabilities - Built-in chorus, delay, and reverb ## Chart rankings - #31 in Top Paid · Music (US App Store) ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/sightlines-harmonic-filter/id6801937031/reviews.md ### 5/5 — Far More Than Meets The Eye *2026-09-04* A filter bank, but also, a synth. A beautiful sounding instrument / effect. In a world where we are constantly being pitched to by lower effort offerings, it’s refreshing to have AAS as a creator to further explore all kinds of unexpected sound dimensions with their one of a kind plugins. The DSP sounds good, there’s an in-depth manual, a full on video manual on YouTube, and the apps are just so artistically pleasing to look at. Not to forget how much modulation is on board as well. Just top tier all around. Aqeel is shaping up to be one of the most, if not the most, exciting music plugin developer. Now firmly in my small group of autobuy day one creators. On iOS, it’s fair to say now he’s in league with Bram Bos, Beepstreet, Michael (Loopy Pro), Unfiltered Audio, Audio Damage, Klevgrand, Jim (GrooveRider 2), and AudioThing. Well done, keep up the great work. ## Frequently asked questions about Sightlines ### What is Sightlines? Sightlines is a playable harmonic filter bank designed to add motion, stereo spread, and unique textures to sounds. It can be used as an instrument or an audio effect. ### What sound sources can I use with Sightlines? You can use noise, samples (one-shots or loops), or its built-in synth engine as sound sources within Sightlines. ### Can Sightlines be controlled with MIDI? Yes, Sightlines can be controlled with MIDI, allowing you to play it as an instrument and modulate its parameters in real-time. ### Does Sightlines have built-in effects? Yes, Sightlines includes a chorus, BBD-style delay, and reverb at the end of its signal chain to enhance the output. ### What is the price of Sightlines? Sightlines is available for a one-time purchase of $7.99. ### What devices is Sightlines compatible with? Sightlines is compatible with iPhone, iPad, and iPod touch devices. ### How often is Sightlines updated? Sightlines was last updated on September 3, 2026, with version 1.0. Future updates will depend on developer plans. ### Does Sightlines have ads? No, Sightlines does not contain advertisements, as indicated by the 'hasAds' flag being false. ## Version history (last 1 release) ### 1.0 — 2026-09-03 No release notes. ## More apps by Aqeel Aadam - [Weeping Wall](https://appshunter.io/ios/app/weeping-wall/id6475484795) - [Ridgewalk](https://appshunter.io/ios/app/ridgewalk/id6502917859) - [Waymaker - Modular Sequencer](https://appshunter.io/ios/app/waymaker-modular-sequencer/id6737984216) - [Outgrowth - Sample Instrument](https://appshunter.io/ios/app/outgrowth-sample-instrument/id6755965753) - [Coastline - Audio Effect](https://appshunter.io/ios/app/coastline-audio-effect/id6780281953) All apps by Aqeel Aadam: https://appshunter.io/developer/1724235864 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-05.*