# Pure Strings Instrument & AUv3 — Violin, Viola, Cello, Bass > Professional iOS string instrument app with advanced sound shaping and AUv3 integration. (iPhone/iPad app by e-instruments lab GmbH.) - Source: https://appshunter.io/ios/app/pure-strings-instrument-and-auv3/id6743003730 (this page in markdown: same URL + `.md`) - Developer: [e-instruments lab GmbH](https://appshunter.io/developer/1336486617) - Category: Music, Education - Price: $29.99 - Rating: 4.70/5 from 51 App Store ratings · 22 written reviews indexed - Age rating: 4+ - Requires: iOS 16 · 878 MB - Released: 2025-06-05 - Data updated: 2026-08-30 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/pure-strings-instrument-and-auv3/id6743003730/reviews.md ## What is Pure Strings Instrument & AUv3? Pure Strings is an inspiring professional iOS app that allows musicians to transform their iPhone or iPad into a richly expressive string instrument. With nine expertly sampled articulations and textures, it offers a wide range of string ensemble options. At its core is the Morphpad, a touch-sensitive interface that allows seamless blending and shaping of sounds. Simply slide your finger to explore and morph through a variety of string sounds and effects. Pure Strings combines the high-quality sound typically associated with desktop virtual instruments with the intuitive, tactile experience of mobile devices, delivering an expressive, versatile and responsive instrument. Pure Strings responds fluidly to your creative impulses. Swipe across the Morphpad to blend, mix and layer string tones with simple finger movements. Whether you're exploring classic sounds or venturing into modern sonic landscapes, the app provides a large variety of strings sounds, including sustain, pizzicato, staccato, harmonics, trills and tremolo articulations, as well as string machine, synth and vintage tape string sounds. Pure Strings lets you access the full dynamic range - from soft piano to bold fortissimo - not only through keyboard velocity, but also through the Dynamics Strip next to the Morphpad, Mod Wheel or automation. In addition, the built-in arpeggiator transforms chords played with short articulations into synchronised arpeggios that follow your host tempo, adding an extra dimension of musical expression. Customise your sound with control over attack and release time, or shape your tone with the Con Sordino button, which softens the sound to create a uniquely mellow and emotional atmosphere, replicating the effect of a mute used by string players. To further enhance your sound design options, Pure Strings includes a versatile EQ, high-quality reverb and a delay effect that syncs to the host tempo. These effects morph seamlessly as you explore the Morphpad, but they can also be set as master effects by disabling the Morphpad control, giving you even more flexibility in sound design. Pure Strings works as a standalone app or as an AUv3 plug-in within your favourite iOS DAW. Whether you want to open the app in standalone mode using USB, standard MIDI, network or Bluetooth MIDI connections, or integrate it as an AUv3 plug-in into music apps such as Logic Pro, GarageBand or Cubasis, Pure Strings offers connectivity and integration across a wide range of workflows. Feature Overview: • Interactive Morphpad - morph, blend and mix string sounds with simple finger movements • Nine different sounds - navigate between nine core string sounds: sustain, pizzicato, staccato, harmonics, trill, tremolo, string machine, synth, vintage tape string • Extensive Connectivity - Connect via USB, direct or Bluetooth MIDI, Inter Device Audio (IDAM), Network MIDI • Standalone and AUv3 plug-in compatible - Plug and play or use within your favourite music production software • Multiple dynamics control options: velocity, on screen dynamics strip, modwheel, automation • Arpeggiator for short articulations - transforms chords into synchronised arpeggios that follow your host tempo • Con Sordino button - soften the sound to create a mellow and emotional atmosphere, replicating the effect of a mute used by string players • Zynaptiq QREV Reverb - Add extra atmosphere and depth to your sound • 3-Band EQ and Delay - Get creative with customisable EQ and temposynced Delay effects • Attack and release envelope control • Studio Quality Audio at Ultra-low Latency • Save and Load Your Own Presets - Wherever you land on the Morph Pad, if you like the sound you hear – save it and recall it again later • Customisable velocity curve • Transposition and tuning options • 24-bit, 44.1 kHz • 905MB installation ## Key features - Interactive Morphpad for sound blending - Nine sampled string articulations - Standalone and AUv3 plugin compatibility - Extensive MIDI connectivity - Built-in arpeggiator - EQ, reverb, and delay effects ## Recent user reviews (10 of 22) All indexed reviews: https://appshunter.io/ios/app/pure-strings-instrument-and-auv3/id6743003730/reviews.md ### 5/5 — Stellar *2026-08-08* 5/5 Stars — Absolute Game-Changer for iPad Audio Workflows! If you route audio or MIDI in AUM or Cubasis, Pure Strings is an absolute must-have. The sound quality is pristine, rich, and deeply expressive right out of the box, but where it truly shines is its seamless AUv3 integration and parameter mapping. Pitch bends, expressiveness, and dynamic modulation respond fluidly with almost zero latency. Whether you are driving it with an MPE surface, a ribbon controller, or mapping custom MIDI CCs for 2D Morph pad parameter control, this app tracks every nuance effortlessly. It’s stable, lightweight on CPU, and instantly elevates any live mobile rig or studio setup. Huge credit to the developers—this is easily one of the best string synth/physical modeling engines available on iOS! ### 2/5 — 表現力が乏しい *2026-08-01* スタッカート、シンセ、ピチカート、ハーモニクス、トレモロなどのアーティキュレーションが円形に並んでいて、希望するところにカーソルを持っていき演奏表現を選ぶのですが、一種類または二種類のミックスしか選べないのは超絶不自由です。そしてスタッカートとピチカート以外はみなスローボウイングで、マルカート表現ができません。 ——————————— (後日追記) レビューへのコメントで、モーフパッド上のアーティキュレーションアイコンの位置を変更できることを教えて頂きました。 多少自分好みの操作感に近づけることはできましたが、やはり速いボウイングの奏法ができないのは残念です。 **Developer response:** レビューありがとうございます。モーフパッド（左側のペンアイコン）で、すべてのアーティキュレーションの位置を変更することができます。そうすれば、マルカートでもサスティンとスタッカートをミックスできるようになります。 ### 3/5 — In-app purchases *2026-05-25* Percussion timpani, triangle, etc., ### 4/5 — デフォルト状態ではちょっと使いづらいかも *2026-05-16* スタッカート、シンセ、ピチカート、ハーモニクス、トレモロなどのアーティキュレーションが円形に並んでいて、希望するところにカーソルを持っていき演奏表現を選ぶのですが、一種類または二種類のミックスしか選べないのは超絶不自由です。そしてスタッカートとピチカート以外はみなスローボウイングで、マルカート表現ができません。 ——————————— (後日追記) レビューへのコメントで、モーフパッド上のアーティキュレーションアイコンの位置を変更できることを教えて頂きました。 自分好みの操作感に近づけることで、より表現の可能性が広がります。 **Developer response:** レビューありがとうございます。モーフパッド（左側のペンアイコン）で、すべてのアーティキュレーションの位置を変更することができます。そうすれば、マルカートでもサスティンとスタッカートをミックスできるようになります。 ### 3/5 — Nicht so expressiv wie erhofft *2026-04-12* Leider läßt sich Attack nicht per Velocity steuern. Ideal wäre eine getrennte Einstellung von „Velocity Amount“ für Lautstärke und Attack. Ließe sich dann noch die Lautstärke via cc11 - Expression und/oder (Poly-) Aftertouch/MPE steuern wäre es perfekt. Generell fehlt mir eine umfangreiche Steuerung der Parameter via MIDI… ### 5/5 — The best *2026-03-15* I have never heard strings sound this great. Not only do they sound way over the top of the strings available in most plugins/DAWs, they are one of the best sources of inspiration I ever used. The connectivity is way too good not to use all of this apps incredible suite of features. Definitely worth it! ### 5/5 — A masterpiece! *2026-01-30* I am so pleased with what this brilliant app can do thank you. Big dreams start small and I must say this is so iconic in ways words can’t describe or explain. ### 5/5 — A really superb orchestral Audio Unit. *2026-01-24* On my iPad Pro M1 these instruments have great sound, put it through a Belkin HD Express dock and into a 15” busker amp/speaker combo, it’s lovely! Forget all that stereo palaver, mono is clearer, imho! Even well-known guitarists have violin type sounds in the mix, it’s a sweet counterpoint in quite a few rock songs. Fantastic, thanks. ### 5/5 — Great string *2026-01-17* Perfect interface great control and great control ### 3/5 — Needs Midi Learn *2025-11-25* This app sounds fantastic. However, as a live musician, I wish it had midi learn. I should be able to map the Expression to CC11 instead of the modulation wheel. Or map the different articulations to the mod wheel or any other CC message. It’s a little to locked into be practical to use in a live setting. **Developer response:** Thank you for your review. We may add a switchable mapping for expression in the future. However, we already allow the Morph Pad to be automated via the 'MorphpadX' and 'MorphpadY' parameters, or CCs 14 and 15. Please refer to the 'Help' dialogue, accessible via the 'i' button in the top right corner, for more information. ## Frequently asked questions about Pure Strings Instrument & AUv3 ### What is Pure Strings Instrument & AUv3? Pure Strings is a professional iOS application that turns your iPhone or iPad into a richly expressive string instrument. It features nine expertly sampled articulations and textures, allowing for a wide range of sonic exploration and manipulation. ### What are the key features of Pure Strings? Key features include an interactive Morphpad for seamless sound blending, nine distinct string sounds (sustain, pizzicato, staccato, etc.), standalone and AUv3 plugin compatibility, extensive MIDI connectivity options, a built-in arpeggiator, and integrated effects like EQ, reverb, and delay. ### How much does Pure Strings cost? The application is a paid app, meaning you purchase it once to unlock all its features and functionalities. There are no ongoing subscriptions or in-app purchases mentioned for additional content or features. ### What devices is Pure Strings compatible with? Pure Strings is designed for iOS devices, specifically iPhones and iPads. It can be used as a standalone app or as an AUv3 plugin within compatible iOS DAWs like Logic Pro, GarageBand, and Cubasis. ### Who would benefit from using Pure Strings? Musicians, composers, and producers who want to add realistic and expressive string instrument sounds to their music will benefit. It's ideal for those working on iOS who need a versatile virtual instrument for composing, performing, or sound design. ## Version history (last 4 releases) ### 1.3 — 2026-04-01 - General stability and performance improvements ### 1.2 — 2026-01-16 - Adjustments to latest iOS versions - Improved stability - Reduced memory footprint ### 1.1 — 2025-06-25 Improved performance and stability ### 1.0 — 2025-06-05 No release notes. ## Apps similar to Pure Strings Instrument & AUv3 | App | Rating | Price | Category | | --- | --- | --- | --- | | [Elpiano](https://appshunter.io/ios/app/elpiano/id6743630486) | 4.7 (3) | $14.99 | Music | | [Wurly - Electric Piano](https://appshunter.io/ios/app/wurly-electric-piano/id6474792239) | 4.6 (10) | $19.99 | Music | | [Oscidia](https://appshunter.io/ios/app/oscidia/id6748944379) | 4.8 (12) | $14.99 | Music | | [Mini Orchestra](https://appshunter.io/ios/app/mini-orchestra/id6444086798) | 4.9 (8) | $19.99 | Music | | [OneShot - Drum Sampler](https://appshunter.io/ios/app/oneshot-drum-sampler/id6651855358) | 4.8 (33) | $29.99 | Music | | [StringLab](https://appshunter.io/ios/app/stringlab/id6461312318) | 4.3 (14) | $14.99 | Music | ## More apps by e-instruments lab GmbH - [Pure Piano - Grand Piano App](https://appshunter.io/ios/app/pure-piano-grand-piano-app/id1336486618) - [Pure Upright - Virtual Piano](https://appshunter.io/ios/app/pure-upright-virtual-piano/id1614870056) All apps by e-instruments lab GmbH: https://appshunter.io/developer/1336486617 ## Related topics [auv3 instrument](https://appshunter.io/ios/topics/auv3-instrument) --- *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 2026-08-30.*