# Klankwelle — A modular synthesizer > Modular synthesizer app for iOS with extensive sound design capabilities. (iPhone/iPad app by Greg Okopal.) - Source: https://appshunter.io/ios/app/klankwelle/id1304067300 (this page in markdown: same URL + `.md`) - Developer: [Greg Okopal](https://appshunter.io/developer/1304067299) - Category: Music, Entertainment - Price: Free - Rating: 4.70/5 from 37 App Store ratings · 22 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 17 MB - Languages: American English - Released: 2017-11-07 - Data updated: 2026-06-25 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/klankwelle/id1304067300/reviews.md ## What is Klankwelle? Klankwelle is a modular synthesizer for iOS. Create up to 8 synthesizers at once and control them with a built-in keyboard or a 16-part step sequencer. Or play them with an external MIDI source. Fine-tune your sounds with a dynamic compressor and a 10-band graphic equalizer. Making a new synthesizer is easy: just add modules with a double-tap and wire up your architecture by dragging between connectors. Available modules include: OSCILLATORS Sine, Square, Sawtooth, Triangle, Noise, Ring FILTERS Lowpass, Highpass, Bandpass, Allpass, Notch, Peak, Formant ENVELOPES Linear, Quadratic EFFECTS Fuzz, Comb, Echo, Bitcrush, Auto Gain LOW-FREQUENCY OSCILLATORS Sine, Square, Sawtooth, Triangle, Linear Trigger ARITHMETIC Add, Subtract, Multiply, Convolution FEEDBACK CTRL Supported MIDI messages: Note on/off (velocity sensitive), Pitch bend, control change, program change ## Key features - Modular synthesizer creation - Up to 8 synths simultaneously - Built-in keyboard and step sequencer - External MIDI support - Dynamic compressor - 10-band graphic equalizer - Extensive module library (oscillators, filters, effects) ## Recent user reviews (10 of 22) All indexed reviews: https://appshunter.io/ios/app/klankwelle/id1304067300/reviews.md ### 4/5 — A very inspiring iPad synth *2024-02-07, version 1.7* The only problem I have is that there’s a glitch where in certain patches the sound will completely disappear after you switch to a different pattern in it, and I mean all of the sound. Switching back or trying a different progress doesn’t change anything with only fix being to reset the app in it’s entirety. ### 5/5 — pleasure *2023-05-25, version 1.7* I love this app. Its limitations are what they are, and the points of possible improvement are obvious after a bit of use. Yet the creative possibilities present in the app never fail to please me. The modular synth has inspired me to build evocative, subtle soundscapes, while the layered step sequencer turns multiple sound patches into emotional compositions. Klankwelle does this in one UI, without DAW mediation. Certainly we can take the results to a DAW for further work, but the immediate results provided through the sequencer bring a real sense of satisfaction after one works to build the synthesizer patches. The results depend on the effort the user chooses to make. Would I love an update? Yes, I would. That doesn't alter my affection for what the app offers already. ### 3/5 — Mediocre filter, unintuitive note selection *2023-04-13, version 1.7* Seems like there’s potential, but the note selection in the sequencer is a turn off. I’d also like to see improvements with the filter since that makes the body of the sound. It needs more controls like resonance, roll-off, and note tracking, but also spacing for band-pass and band-stop (called notch in this app). “Amount” should be changed to “drive” and the model of the filter updated to reflect soft clipping when overdriven. These suggestions should give more life to your filter. ### 5/5 — Brilliant, with lapses *2022-10-08, version 1.7* Lapses? That “keyboard” thing is just a no. No excuse, even if it is just to test sounds during the hookup stage of setting the synthesizers for use with the sequencing system. The virtual keys need work. Otherwise, this is brilliant. I am sure I reviewed it years ago (where that review went, I don’t know). I can’t do a real review now, but this app very much deserves love and support. It still works, though the developer appears to have moved on some time ago. For users, old and new, there is a powerful modular synth, complete with standard effect modules, that can be configured to serve multiple sequencer tracks. This gives you, effectively, eight synths at once, each with its own flexible sequencer. Whole compositions may be developed and played in this one app. For me, the beautiful ambient-suited textures of KW stand out, but what you make of it depends on your patching and sequencing choices, and on the extent to which you want to bring this into a broader working environment for music. Yes, the app could use a few improvements beyond the keyboard, with priority on interoperability functions. Each user will have a wish list, but that is the nature of modular: once the basics are solid, development can continue for as long as we have imagination. What we have here is a strong baseline system that can be grasped without too much work that could do with some simple updating. It would be lovely if the dev picked this up again. But the way this faded down the algorithm charts doesn’t make much sense at all, especially given that other, less-distinctive and/or harder-to-use modular-synth apps have had much more buzz. The app remains very much worth a good wallow now and then. It’s easy - in modular terms - to use and, along certain broad lines, it gives results I find much harder to replicate in other tools. KW isn’t a huge programming environment, and its graphics are relatively simple. There is a lot of beautiful work here, with many creative possibilities already in place. This app deserves more use, enjoyment, and development. ### 5/5 — Make Noise *2022-03-25, version 1.7* If you love sound, you came to the right place. ### 4/5 — Nice sound *2021-09-04, version 1.7* Hey the app looks nice but Its kinda hard to control. Im missing some instructions on handling the hole thing.. for example, how to disconnect two modules? I dont wanna delete them all the time ### 5/5 — Super application! *2021-09-02, version 1.7* It’s the best among free apps, but I have troubles with node connection and big fingers) and I need feature for copying node Thank you! ### 4/5 — Macht Spaß *2021-06-19, version 1.7* Die Idee ist super. Man kann Einiges über die Funktionsweise elektronischer Klangsynthese lernen. Allerdings ist die Bedienung teilweise etwas sehr fummelig. Es wäre auch schön, wenn beim Verändern der Parameter „sinnvolle“ Werte (z. B. Frequenzen) angezeigt würden. Dem Filter fehlt für meinen Geschmack noch ein Resonanzregler. Auch eine Möglichkeit, den Signalfluss zu splitten, so dass z. B. eine Modulationsquelle mehrere Ziele adressieren kann, vermisse ich. Das würde die Flexibilität enorm erhöhen. Ansonsten Daumen hoch👍 ### 5/5 — Great with one little beef *2020-12-18, version 1.7* I use this app a lot and I enjoy it thoroughly. The sequencer is hard to operate though. It’s just not that intuitive. An extra visual would help a lot. Like a knob or if the color of the selected step changed with the octave. So you can do a corse tune visually and a fine tune looking at the actual note. Other than that it’s pretty much all I need ### 5/5 — Super *2020-11-08, version 1.7* Schön. Klein. Fast perfekt. ## Frequently asked questions about Klankwelle ### What kind of synthesizers can I create with Klankwelle? Klankwelle allows you to build complex synthesizers using a modular approach. You can add various modules like oscillators, filters, envelopes, and effects to craft unique sounds. The app supports creating up to 8 synthesizers at once. ### How can I control the synthesizers in Klankwelle? You have multiple control options for your synthesizers. You can use the built-in keyboard, a 16-part step sequencer, or connect an external MIDI source. The app supports sensitive note on/off messages, pitch bend, and control change. ### Does Klankwelle have ads? No, Klankwelle does not contain advertisements. It is a completely ad-free experience for users. ### What is the user rating for Klankwelle? Klankwelle has a strong user rating of 4.7 stars, based on 37 ratings. This indicates a high level of user satisfaction. ### Is Klankwelle available on Android devices? Klankwelle is currently available for iOS devices, including iPhone, iPad, and iPod. It is not available for Android at this time. ### How often is Klankwelle updated? The latest version of Klankwelle is 1.7, released on July 11, 2019. While the app has not been updated recently, it offers a stable and feature-rich experience. ### What is the age rating for Klankwelle? Klankwelle is rated for users aged 4 and older. This makes it suitable for a wide range of users interested in music creation. ### Can I fine-tune my sounds with effects in Klankwelle? Yes, Klankwelle includes a dynamic compressor and a 10-band graphic equalizer to help you fine-tune your sounds. Additionally, there are various effect modules like Fuzz, Comb, Echo, and Bitcrush available for further sound shaping. ## Version history (last 5 releases) ### 1.7 — 2019-07-11 MIDI support ### 1.6 — 2019-05-20 -Split screen support on iPad -Fuzz Effect tone parameter now alters the sound more -Minor bug fixes -Added a Ctrl module that provides a large target for manual manipulation of parameters and enables automation of parameters in the sequencer ### 1.5 — 2019-01-17 New in version 1.5: -swing and velocity control in the sequencer -a feedback module -an auto gain effect module ### 1.4 — 2018-05-31 -Added a formant filter -Module parameter controls display parameter name -Sequencer buttons display note information -Bug fixes ### 1.3 — 2018-04-06 -Reduced battery usage while app is in the background -Improved dragging of modules -Minor bug fixes ## Apps similar to Klankwelle | App | Rating | Price | Category | | --- | --- | --- | --- | | [Mazetools Soniface](https://appshunter.io/ios/app/mazetools-soniface/id1273836217) | 4.5 (25) | Free | Music | | [Audulus 4](https://appshunter.io/ios/app/audulus-4/id1592022030) | 4.6 (57) | Free | Music | | [miRack](https://appshunter.io/ios/app/mirack/id1468259834) | 4.9 (661) | $14.99 | Music | | [Mynth - Polyphonic Synthesizer](https://appshunter.io/ios/app/mynth-polyphonic-synthesizer/id1527862717) | 4.8 (44) | Free | Music | | [RRS Ivoks](https://appshunter.io/ios/app/rrs-ivoks/id6443504248) | 4.5 (39) | Free | Music | | [skippodisk](https://appshunter.io/ios/app/skippodisk/id6449685454) | 4.9 (10) | Free | Music | ## Related topics [modular synth](https://appshunter.io/ios/topics/modular-synth) · [modular synthesis](https://appshunter.io/ios/topics/modular-synthesis) · [modular synth app](https://appshunter.io/ios/topics/modular-synth-app) --- *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 2026-06-25.*