250+ iOS apps curated and reviewed
The best krill synthesizer apps on iPhone average 4.7★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $11.99 | 5.0★ (6) | No | No | Aug 2026 |
| 2 |  | Free | 4.9★ (27K) | No | No | Aug 2026 |
| 3 |  | Free | 5.0★ (5) | No | Yes | Aug 2026 |
| 4 |  | $4.99 | — | No | No | Aug 2026 |
| 5 |  | Free | 4.9★ (33) | No | No | Aug 2026 |
| 6 |  | Free | 4.8★ (1.2K) | No | Yes | Aug 2026 |
| 7 |  | Free | 4.8★ (44) | No | Yes | Aug 2026 |
| 8 |  | $29.99 | 4.9★ (896) | No | Yes | Aug 2026 |
This virtual analog polyphonic synthesizer offers a streamlined interface for creating quick synth sounds on iPad. It features two oscillators, an LFO, a low-pass filter, two envelopes, and stereo effects, all accessible from a single screen.
This is a free, open-source professional synthesizer app for iOS devices. It offers over 300 presets, MIDI support, a sequencer, and vintage-inspired filters. Learn music production basics and create your own sounds.
Create generative ambient music and captivating visualizers with this sonic instrument. Explore diverse soundscapes, from gentle strings to glass bells, and customize your experience with various visual themes. Easily record and share your creations, or use it for relaxation and focus.
This app offers a unique, touch-based synthesizer experience with eight voices, a cross-modulation matrix, and a dual modulated delay. It's designed to be an organic instrument that responds to touch and generates evolving soundscapes, moving away from traditional keyboard interfaces.
Create and play custom synthesizers and instruments on your mobile device. Manipulate oscillators and effects with touch, record live loops, and design unique sounds with a variety of timbres and customizable effects. Supports AUv3 for use in other music production apps.
Explore multidimensional sound design and performance with this polyphonic synthesizer. Create unique evolving soundscapes by navigating sonic universes and sculpting fluid sounds. Features a built-in keyboard, MPE support, and a diverse library of timbres.
Create unique sounds by drawing waveforms, adjusting filters, and controlling parameters with LFOs. Explore a vast sound palette with factory presets or build your own. Supports MIDI, AudioUnit, and live recording for track creation.
This app recreates a legendary modular synthesizer for mobile devices. Explore its iconic modules, experiment with sound design, and create music with intuitive controls and advanced features.
Create music with a comprehensive suite of over 40 virtual instruments and effects. This powerful yet intuitive ecosystem allows you to quickly turn your musical ideas into finished tracks, offering a vast sound library and flexible workflow for various genres.
This powerful wavetable synthesizer app offers an intuitive workflow for creating new sounds. It features a rich library of wavetables, inspiring factory presets, and real-time modulation feedback for sound design.
Create custom synthesizers, audio effects, and MIDI processors with a modular music-making tool. Arrange modules on lanes to process signals and route them internally or with your host DAW. Explore a vast library of modules to craft unique sounds.
Create unique sounds with a versatile polyphonic synthesizer. Shape waveforms, modulate parameters with LFOs, and add effects like chorus and delay. Compatible with AUv3 hosts for expanded creative possibilities.
Transform your device into a portable recording studio. Create music with virtual instruments, record vocals and guitars, and mix multi-track songs. Explore a vast library of sounds and effects to produce professional-sounding tracks anywhere.
This audio effect plugin adds dynamic character to music tracks by shaping amplitude, low-pass, or high-pass filters with a customizable graph. It can also be triggered by MIDI for advanced modulation. Explore 20 presets or create your own unique soundscapes.
Create deep, earth-shattering bass lines and custom electronic drum sounds. This powerful synth offers a lightweight yet robust tool for musicians across various electronic genres. It functions as a standalone app and an AUv3 plugin, allowing for seamless integration into your existing music production workflow.
Experience a classic analog synthesizer reborn on iOS. This app faithfully reproduces the iconic 4VCO sound engine, offering deep sound design capabilities with virtual patches and multi-effects. Seamlessly integrate it into your music production workflow.
This app offers a professional-quality virtual analog synthesizer inspired by classic hardware. It provides a vast library of presets, real-time effects control, and a user-friendly interface for both beginners and experienced musicians. It can be used as a standalone instrument or as an AUv3 plugin.