# Oktopus Synthesizer — Omnipotential Instrument

> Deep iOS synthesizer and AUv3 extension for sound design and music creation. (iPhone/iPad app by Vyacheslav Koristov.)

- Source: https://appshunter.io/ios/app/oktopus-synthesizer/id6790597981 (this page in markdown: same URL + `.md`)
- Developer: [Vyacheslav Koristov](https://appshunter.io/developer/6784900754)
- Category: Music, Entertainment
- Price: $4.99
- Rating: 4.50/5 from 6 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 15 · 86 MB
- Languages: American English
- Released: 2026-08-12
- Data updated: 2026-09-08
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/oktopus-synthesizer/id6790597981/reviews.md

## What is Oktopus Synthesizer?

Oktopus is a deep synthesizer and AUv3 extension instrument with a modular spirit built for sound design, performance, and music creation in any compatible DAW or standalone.

This app includes an AUv3 extension!

Shape sounds across 8 synth blocks, combine oscillators and samples, route MIDI creatively, and build movement with LFOs, arpeggiators, modulation, and a flexible effects chain. Use Oktopus as a standalone instrument or load it inside AUv3-compatible iOS hosts / DAWs.

Features:
+ 8-block synth architecture for layered and evolving sounds
+ MPE and MIDI input support
+ AUv3 instrument support for compatible hosts
+ Sample loading, slicing, and playback tools
+ Built-in recording and sample export workflow
+ Built-in spectrometer to clearly see what you're creating
+ Per-block arpeggiator and sequencing controls
+ LFOs, modulation routing, and performance macros
+ Factory presets and factory samples included
+ Share Voice Memos/Audio Files/Photos/Video clips to the app to extract audio for sampling. Supported files: AIFF, MP3, WAV, MP4, JPEG, HEIF, PNG, SVG
+ Import images to OSC and extract audio from the image
+ Flexible effects chain with EQ, distortion, bitcrusher, compressor, phaser, flanger, chorus, filter, delay, and reverb
+ Touch-friendly interface for iPhone and iPad music creation
+ Custom zoom level

Oktopus is made for producers, composers, and experimental musicians who want a powerful synth environment that can move from quick ideas to detailed sound design.

## Key features

- 8-block synth architecture
- Oscillator and sample combination
- AUv3 instrument support
- Sample loading and playback
- Flexible effects chain
- MPE and MIDI input support
- Built-in spectrometer

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/oktopus-synthesizer/id6790597981/reviews.md

### 5/5 — Endless Exploration

*2026-08-24*

Powerful synth with many pathways for sound design, UI is busy but not confusing.  Oktopus is comparable to Synthmaster 2 in many ways, yet has more layering options (8 layers). I gave Five Stars, but I almost gave four stars as my iPad Air with M1 processor struggles with CPU.
If you have a fast CPU, then I highly recommend Oktopus synth!

**Developer response:** Thank you!! Yes it may be too demanding due to the synth architecture. It's like having 8 synths running in your device (if all blocks used simultaneously). And each individual block is capable of 64 unison sounds which alone may already be too much for a device. 

Although there's also a way to optimize it even more because generally the synth was designed for desktops. I'll keep in mind your important feedback! Thank you so much for 5 stars!!

### 2/5 — Truncated screens portrait & landscape

*2026-08-23*

Particle Chimes is another music instrument. 

You added note hold, kind of. You need to be able to toggle on/off individual held notes, not all held notes by turning the feature off.

The settings screen the bottom cho settings are cut off in portrait and margins on n landscape.

There’s too many things wrong to list.

Again, there’s a lot of ‘stuff’ but there is no actual personality in the instrument. There’s nothing exciting when you play it.

(But thanks for your attempt to add note hold though.)

**Developer response:** UPD: Try 1.0.4 first

Thank you for your review!! It's really important feedback!

Keylock: this feature may be included in future updates.
Particle Chimes is a bit of a weird comparison, because the synth has nothing to do with generative algorithms. All you can see is old-school DSP like in Sylenth, Massive, Gladiator, Serum, Vital, and FM8 plugins. You have real-time oscillating waveforms (sine, square, triangle), wavetables of ramps, and raw samples. And then you just mix/blend/modulate them together.

Anyways, I'm happy you tried it; thank you for the rating.

### 5/5 — My new favorite synth

*2026-08-17*

I have been enjoying this synthesizer so much. I love the fact that it has so many LFO’s and I can assign them to basically anything. It’s working great in AUM and pretty much every other app that I’ve been testing it on. The app has a great look and is genuinely fun to interact with.

**Developer response:** Hi Obis11! I appreciate your feedback! Please contact support@tatreal.pro or oktobugs@tatreal.pro - the pop-up screen shows this email right on the first start of the app. These issues you've pointed out will be fixed in 1.0.1, which is already under review by the Apple team. Hope it'll be approved soon, as it takes up to 5 days to get approval. AUv3 will be supplied within the next update. Thank you for your purchase!!! Can you please contact us and tell within email what type of MIDI controller you use? You may need to activate MIDI in the iOS settings menu for wired MIDI: Settings->Privacy & Security->Security->Wired Accessories->Always Allow
If this has been done and the app still can't receive any MIDI, then please share your MIDI controller make/model/version in an email - this is very important information for us to get fixed the issue right away

### 5/5 — Very cool!

*2026-08-17*

Fun! Sounds great! Cool! Lots of oscillators!

**Developer response:** Thank you so much! LOTS. Have you already tried to set 8 unison ramps/saws on OSC1 and OSC2, and then do max detune for both and turn fine-tune for each in the opposite direction to spread them more? It sounds so aggressive, OMG! Don't try it on all 8 OSCs, I warned you ;)

### 4/5 — Missing keylock/notehold.

*2026-08-16*

There’s a lot of ‘stuff’ but I detect no actual personality though, like Particle Chimes.

**Developer response:** Thank you for your review!! It's really important feedback!

Keylock: this feature may be included in future updates.
Particle Chimes is a bit of a weird comparison, because the synth has nothing to do with generative algorithms. All you can see is old-school DSP like in Sylenth, Massive, Gladiator, Serum, Vital, and FM8 plugins. You have real-time oscillating waveforms (sine, square, triangle), wavetables of ramps, and raw samples. And then you just mix/blend/modulate them together.

Anyways, I'm happy you tried it; thank you for the rating.

### 4/5 — Great app but no connectivity

*2026-08-15*

I am really loving this app, the sound design possibilities are endless, but au3 is not working in any capacity. Also midi is not working. I have tried using several apps to connect coremidi, network midi and Bluetooth midi. None of these methods appear to be working. I cannot find a contact link for support as well. Hope this gets fixed soon, I really like this app and I really hope to use it with midi and the ability to actually record something soon

**Developer response:** Hi Obis11! I appreciate your feedback! Please contact support@tatreal.pro or oktobugs@tatreal.pro - the pop-up screen shows this email right on the first start of the app. These issues you've pointed out will be fixed in 1.0.1, which is already under review by the Apple team. Hope it'll be approved soon, as it takes up to 5 days to get approval. AUv3 will be supplied within the next update. Thank you for your purchase!!! Can you please contact us and tell within email what type of MIDI controller you use? You may need to activate MIDI in the iOS settings menu for wired MIDI: Settings->Privacy & Security->Security->Wired Accessories->Always Allow
If this has been done and the app still can't receive any MIDI, then please share your MIDI controller make/model/version in an email - this is very important information for us to get fixed the issue right away

## Frequently asked questions about Oktopus Synthesizer

### What is Oktopus Synthesizer?

Oktopus Synthesizer is a deep iOS synthesizer and AUv3 extension designed for sound design, performance, and music creation within compatible DAWs. It offers a modular spirit with extensive sound-shaping capabilities.

### What devices does Oktopus Synthesizer support?

Oktopus Synthesizer is available for iPhone, iPad, and iPod. It features a touch-friendly interface optimized for both iPhone and iPad music creation.

### How much does Oktopus Synthesizer cost?

Oktopus Synthesizer is a paid application, priced at $4.99. There are no in-app purchases or subscription fees associated with its use.

### Does Oktopus Synthesizer have ads?

No, Oktopus Synthesizer does not contain advertisements. It provides an uninterrupted music creation experience.

### What is the age rating for Oktopus Synthesizer?

Oktopus Synthesizer has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger individuals interested in music creation.

### How often is Oktopus Synthesizer updated?

The latest version, 1.0.2, was released on August 17, 2026, just five days after its initial release on August 12, 2026. This suggests a commitment to regular updates and improvements.

### Can I use Oktopus Synthesizer with other music apps?

Yes, Oktopus Synthesizer functions as an AUv3 extension, meaning it can be loaded inside other AUv3-compatible iOS hosts and DAWs for integrated music production.

### What kind of audio files can I import for sampling in Oktopus Synthesizer?

You can share Voice Memos, Audio Files, and Video clips to Oktopus Synthesizer to extract audio for sampling. Supported file formats include AIFF, MP3, WAV, and MP4.

## Version history (last 5 releases)

### 1.0.4 — 2026-08-24

+ Image-to-audio - convert image to full spectrum or snap to specific chromatic keys
+ Bug fix for PW crossing 50% with a click in samples due to incorrect flag use
+ Held keys with Hold mode are seen if triggered with MIDI
+ Bug fix for spectrometer that slipped to bottom buttons

### 1.0.3 — 2026-08-19

+ Key Hold feature (Thank you, Eriptron)
+ New sub-menus for every Recorded / User samples: Load, Export, Delete, Delete All - Deletes all the samples in that sub-menu
+ Improved usability of pop-up windows/overlays
+ Bug fix when Arp / Seq cells couldn't be edited in landscape mode
+ Bug fix for Microphone Input that could never be disabled
+ Other UI / UX improvements

### 1.0.2 — 2026-08-17

+ Spectrometer Display Overlay
+ Fix UI bugs in AUv3
+ Fix bug when Close button couldn't properly register touch/click
+ Factory Presets/Samples broken path fix

### 1.0.1 — 2026-08-16

+ AUv3 extension added
+ MPE bug fixes for Pitch Bend and Per-key Aftertouch
+ Sample exporting, batch sample exporting
+ UI improvements: Foldable top/bottom panels, Rec button animated
+ UI bug fixes with slipped UI elements on rescale/resize

### 1.0.0 — 2026-08-12

No release notes.

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*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 2026-09-08.*