# Grainsmith Field — Granular synth & AUv3 effect > Granular synthesizer and AUv3 effect for iPad and iPhone. (iPhone/iPad app by Plastic Factory LLC.) - Source: https://appshunter.io/ios/app/grainsmith-field/id6760624826 (this page in markdown: same URL + `.md`) - Developer: [Plastic Factory LLC](https://appshunter.io/developer/1017920807) - Category: Music, Entertainment - Price: $11.99 - Rating: 5.00/5 from 5 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 16.0 · 79 MB - Released: 2026-06-25 - Data updated: 2026-08-19 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/grainsmith-field/id6760624826/reviews.md ## What is Grainsmith Field? Grainsmith Field is a granular instrument for iPad and iPhone. Load a sound or record one live, then pull it apart into grains. Stretch and scatter it until it stops sounding like the source, or pitch it and play it like an instrument. It shares its granular engine with our desktop Grainsmith plugin, but it's rebuilt for touch. Field is a single multitouch screen: four XY pads control paired parameters (Density and Size, Jitter and Spread, Pitch and Reverse, Cutoff and Resonance), and a Morph control sweeps several at once. THREE PLAYHEADS Run up to three independent grain streams from one sample at the same time. Each head has its own position, speed, pitch, level, pan, grain size, and spread. Grab a playhead line on the waveform to move it independently, or move them as a group. Double-tap to gather them. Set a second head a fifth or an octave away and the streams blend into a single granular texture. MODULATION Six modulation slots drive the controls: LFOs and Euclidean patterns with per-route depth, assigned by long-pressing a knob. The MOVE dial sets the Morph macro itself in motion, and each destination drifts on its own phase. Rates sync to tempo, in the app or from the host clock. RECORD AND MANGLE Capture audio from your hardware input and granulate it as it comes in, or loop a phrase and let the engine chew on it. Scrub the waveform directly. Freeze the grain cloud to hold a sound for as long as you want. Run the stereo delay to smear the grain tails into echoes; it syncs to tempo too. Export captures as WAV to the Files app. RECORD YOUR PERFORMANCE Start a recording from the presets menu and everything you play is captured to a WAV file. Keep playing through app switches and screen locks; a Lock Screen Live Activity shows while recording runs. Recordings save to the Files app and share straight from Field. PLAY IT AS AN INSTRUMENT Switch to Instrument mode and play the grain engine from a MIDI keyboard: four-voice polyphony, an attack/release envelope, and a root-note control. The pitch ribbon snaps to musical intervals: Free, Chromatic, Scale, Octaves, or Oct+5ths, with twelve scale options and a probability control. Works with hardware MIDI in the standalone app and with host MIDI in AUv3. USE IT IN YOUR HOST The AUv3 music effect loads in AUM, Logic for iPad, and other AUv3 hosts. Parameters are exposed for host automation and MIDI learn. Your patch saves and restores with the session, including head count, every per-head control, the modulation slots, and pitch snap mode. ALSO IN THE BOX - Ten factory presets grouped by character, with a browser and a Favorites section for your own - Background audio: the standalone keeps playing when you switch apps - Reverb, stereo delay with tempo sync, filter, grain-shape windows, pitch randomization - Runs on iPhone with a compact layout No account and no subscription. Field collects no data. ## Key features - Granular synthesis engine - Multiple independent playheads - Live audio recording and manipulation - MIDI instrument mode - AUv3 music effect - Performance recording with Live Activity - Built-in reverb and filter ## Chart rankings - #182 in Top Paid · Music (US App Store) ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/grainsmith-field/id6760624826/reviews.md ### 5/5 — Fun to experiment with *2026-07-24* Developer quick response to support and fast fix! Excellent sound toy for experimental work. **Developer response:** Thanks for flagging this: you found a real bug. The playhead screen had no way to close it on some phones, so you were stuck force-quitting to get out. It is fixed in the update that's live now (version 1.3.2). Sorry for the hassle, and thanks for taking the time to report it. ## Frequently asked questions about Grainsmith Field ### What is Grainsmith Field? Grainsmith Field is a granular synthesizer and AUv3 effect designed for iPad and iPhone. It allows users to load or record audio and manipulate it into unique sonic textures using its advanced granular engine. ### What devices does Grainsmith Field support? Grainsmith Field is available for both iPhone and iPad, offering a compact layout for iPhone users. It requires iOS 14 or later. ### How much does Grainsmith Field cost? Grainsmith Field is a paid application, priced at $9.99. There are no subscriptions or in-app purchases required to access its full functionality. ### Can I use Grainsmith Field with a MIDI keyboard? Yes, Grainsmith Field can be played as an instrument using a MIDI keyboard in its standalone mode. It supports four-voice polyphony, an attack/release envelope, and various pitch snapping modes. ### Does Grainsmith Field have ads? No, Grainsmith Field does not contain any advertisements. It is a premium application with no ads or in-app purchases. ### How often is Grainsmith Field updated? The latest version, 1.3.0, was released on July 19, 2026, indicating active development and regular updates. Users can expect ongoing improvements and new features. ### Can I record my performances with Grainsmith Field? Yes, you can record your performances directly within Grainsmith Field to a WAV file. The app supports background audio recording and features a Lock Screen Live Activity while recording. ### What is the age rating for Grainsmith Field? Grainsmith Field has an age rating of 4+, making it suitable for a wide range of users. It does not contain any mature content. ## Version history (last 5 releases) ### 1.4.3 — 2026-08-04 Live mode: grains no longer jump when the record head passes the play position. Recording into a live loop used to move any grain the record head was about to overwrite. You heard that as the cloud lurching backward and then forward again each time the head swept past. Now the buffer crossfades underneath instead, so the sound morphs from what was already in the loop to what you are recording, and grains stay where you put them. ### 1.4.2 — 2026-08-03 Usability improvements to multi-playhead and mod screens. ### 1.4.1 — 2026-08-01 Bug fix to make the new LFO feature work better when LFOs are synced to the host tempo. ### 1.4.0 — 2026-07-31 Field 1.4.0 adds motion. MODULATION: six slots you assign by long-pressing a knob. LFO or Euclidean patterns, per-route depth, tempo sync, and rings on the knob that show what's moving. MOVE: the Morph macro can drift on its own now. Long-press MORPH, set a rate, and each destination evolves on its own phase. DELAY: a stereo delay built for granular tails, with tempo sync, feedback, and mix controls. Playheads 2 and 3 gain a PAN dial, so each stream gets its own place in the stereo field. Presets carry all of it, in the app and in your host session. ### 1.3.2 — 2026-07-22 Playheads 2 and 3 now have their own Size and Spread. Open the Playheads sheet and each extra head has Size and Spread sliders next to Speed, Pitch, and Level. A new head starts matched to Playhead 1 so it sounds full right away, and from there you can make it bigger, smaller, wider, or narrower. Also fixed: long grains on an extra head no longer shrink as you raise Density. The grain overlap limit now accounts for every head's grain size, so a big grain keeps its length. ## More apps by Plastic Factory LLC - [Particle Chimes: Ambient Synth](https://appshunter.io/ios/app/particle-chimes-ambient-synth/id6785981783) All apps by Plastic Factory LLC: https://appshunter.io/developer/1017920807 --- *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 2026-08-19.*