# Tomofon — Real Audio Synth

> Virtual audio synthesizer using user-imported audio files to create unique soundscapes. (iPhone/iPad app by Klevgrand Produkter AB.)

- Source: https://appshunter.io/ios/app/tomofon/id6444832874 (this page in markdown: same URL + `.md`)
- Developer: [Klevgrand Produkter AB](https://appshunter.io/developer/1118902192)
- Category: Music, Music
- Price: $28.99
- Rating: 4.79/5 from 19 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 1.0 GB
- Languages: English
- Released: 2023-02-15
- Data updated: 2026-08-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/tomofon/id6444832874/reviews.md

## What is Tomofon?

This unique virtual instrument introduces a new “Audio Model” format, capable of containing thousands of waves extracted from ordinary audio files. These waves - and how they’re structured - lays the ground for how Tomofon generates audio, resulting in a highly flexible and instantly expressive instrument. On one hand it can sound very organic, even lifelike, and on the other, like something out of this world. Whether you want to play around with the Audio Model Starter Pack (instruments & voices) and factory presets, or import your own audio to shape your own unique soundscapes – it is fair to say that you are in for a creative journey.

How does it work?

Tomofon converts audio files into a large set of oscillating waves, which are then mapped into pitch zones where each wave represents one layer (a bit similar to how a sampler structures different velocity zones). The main difference is that since each zone is populated with waves instead of ordinary samples, the synth engine can morph between them (both layers and zones). This makes all transitions between zones and layers continuous and seamless.

Create and share your own unique sounds

A significant feature of this plug-in is that users can import their own audio files and create new and unique Audio Models. Ordinary audio files (preferably with monophonic content) can easily be imported and distributed into different pitch zones over the keyboard range, either automatically or manually. Doing an automatic import is basically a one-click process which instantly results in a proper playable Audio Model. A manual import gives the user full control of which waves should end up in which pitch zone. Last but not least you can easily share your own created Audio Models with others.

Tomofon comes pre-loaded with a pack of 124 Audio Models based on high quality audio recordings of multiple expressions. These models includes several instruments like strings, vocals, brass, woodwind, guitars and more. Along with these models there are over 180 presets to get you going right away. From there on you can venture further and start creating Audio Models based on your own audio files and experiment on the types of sounds they can grow to be.

Features
- Wide selection of factory presets and Audio Models
- Integrated audio sample importer and Audio Model editor
- Pitch and (layer) depth envelopes that can be edited by the user
- Envelope times can be controlled separately via MIDI velocity
- Several LFO:s (including Sample and Hold with randomness)
- Modulation matrix (2 x MIDI CC, Velocity and Keymap)
- Monophonic playback with separate glide times for pitch and velocity
- Polyphonic legato playback where started notes syncs envelopes with currently playing ones
- Up to 4 doubling voices with separate pitch, pan and level
- Filter with modulation possibilities
- Post Reverb, Delay and EQ

## Key features

- Audio Model format for sound generation
- Import and edit own audio files
- Morphing between layers and zones
- Wide selection of factory presets
- User-editable pitch and depth envelopes
- Multiple LFOs and modulation matrix

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/tomofon/id6444832874/reviews.md

### 5/5 — An outstanding synth

*2025-02-19, version 1.2.0*

Tomofon is likely the most outstanding synth whose tech is truly unique, the pinnacle achievement on an iPad. I will try to explain how it works, but your best bet is to check out YouTube where a good deal of time is spent explaining Tomofon.
A sample or samples are deconstructed into wave tables. And that has been done exceedingly well by other companies. The wavetables are then presented in novel ways, creating for lack of a better descriptor 3-D timbres over time. Users can import their own sample data and have it converted so that most of the hard work is dealt with outside of the user’s hands. The synthesis itself is fairly easy to comprehend and works in ways that create gorgeous sound and are not only possible, but are ridiculously easy to accomplish and I don’t say this in a flippant way, it’s almost too easy to get useful timbres not heard from other synths.
In a far more complex, synthesizer, the AIR Hydrosynth sometimes approaches some of Tomofon’s more expansive capabilities. I love my Hydrosynth so making it sound like it’s a limited toy pains me because outside of virtual synths it’s one of my favorites and now so is Tomofon.
I can’t think of a situation that Tomofon wouldn’t be incredibly useful for. Yes, it is expensive, it also outperforms anything that I can think of and does so with an elegant, easy to understand GUI.

Best in class, really it’s own class that outclasses anything I’ve worked with on this platform. Considering what it’s able to do this is a no-brainer if you want truly unique sounds that are not insanely difficult to program if even possible outside of Tomofon. It’s that good.

### 5/5 — Didnt like at first,but then-whaaaaaaaaa…

*2025-02-04, version 1.2.0*

This thing can sound like anything,especially with the matching of the voices and bodies to the waves you can put in there yourself-add the effects and you have a synth that can sound like anything anyone and everything in one package-please keep updated.....

### 3/5 — Rubber chicken synth

*2023-09-27, version 1.2.0*

You can take almost any sound and make it sound like a high pitched squeezing a rubber chicken sound. 3 stars cause im impressed that it'll do that with ANY sample. And $15 for sample packs?? That's a whole other USEFUL app at that price.

### 5/5 — Innovative, freaky but delicious! 🦋

*2023-07-03, version 1.2.0*

I’ve really fallen in love with Klevgrand as they produce some really out there products that are unique and off the grid, and Tomofon is really no exception! I was immediately intrigued after hearing various demonstrations of its weirding ways, as it’s seemingly capable of producing sounds ranging from beautiful angelic overtones to eerie macabre shrills and groans (and everything in between)! Tomofon has bewitching qualities as through its audio model creation (re-synthesis via wavetables) sampled sounds take on ‘additive’ like qualities gaining a malleable ‘elasticity’ so they can be manipulated in weird and wonderful ways. Further the engine can be driven by your own samples, so there’s lots of possibilities to produce a wide gamut of sonic nuances, textures, ambience, etc. V.1 was already innovative and incredible sounding on release but now supports MPE and multimode filters too, which provide endless possibilities for creative expression - very cool!

### 5/5 — New love

*2023-06-29, version 1.2.0*

Didn’t take to it at first but with the new update it seemed to grow on me more and more. Been looking for a workable clarinet for some time now I’ve got it plus,thank you and good luck with a great app

### 5/5 — Outstanding

*2023-05-30, version 1.1.1*

I am working through the details of how to customize the assignments of waves to the keyboard to create and to edit models, so my assessment is not quite complete. In general terms, however, this is a striking, great-sounding synthesizer with a wide range of capabilities. For Klevgränd (or any developer), this strikes the user right away as something reflecting a great deal of ambition and creative work.

Tomofon gives easy access to a world of usable sound of high quality, with presets included to get users going on their creative paths. If one reads my first sentence to infer worry about usability or some kind of nasty learning curve, I can say not to worry. No such thing should concern the majority of potential users. My use of the tools for building custom wave models (sort of a marriage of multiple small wavetables across the frequency/note range of a sound preset/instrument) has run into some advanced difficulties most users will never encounter.

I do think the model-editing tools could be a touch more clear than they are for adding new waves to an existing model and assigning those across key ranges. This is unusual in my experience with this developer. Klevgränd tend to make things very clear - and very simple (in one or two apps, almost too simple for my control-freak tastes). With Tomofon, I'm sure I have missed something and that I'll find my answer soon.

This is my edge-case issue with Tomofon, but the overall instrument should be in any pad/mobile-music-user's toolkit. It does so much well, while being a very particular, characterful synthesizer. This is not at all some do-it-all thing that has no distinctive attraction.

Klevgränd can take a bow for this one. Well done.

### 5/5 — Fantastic potential for expressive use. Monosynth Expression needs a little tidying up

*2023-03-27, version 1.1.1*

I can not for the life of me find where to set a patch to play monophonically with legato mono-synth style of playing without the envelope releasing when any note is released on the keyboard. Usually you should be able to maintain a series of legato notes as long as one key is still depressed on the keyboard. So the expressive monosynth capability is a little curtailed. It would be great to have it respond like most expressive monosynths when in mono legato mode.

## Frequently asked questions about Tomofon

### What is Tomofon?

Tomofon is a virtual instrument that uses a unique "Audio Model" format to generate sounds. It converts audio files into waves that can be morphed and manipulated to create a wide range of organic or otherworldly sounds.

### How does Tomofon generate sounds?

Tomofon converts audio files into oscillating waves, which are then mapped into pitch zones. The synth engine can morph between these waves and zones, allowing for continuous and seamless transitions.

### Can I import my own audio into Tomofon?

Yes, a significant feature of Tomofon is the ability to import your own audio files and create new Audio Models. You can distribute these waves into different pitch zones automatically or manually.

### What kind of sounds can Tomofon create?

Tomofon can create very organic, lifelike sounds as well as sounds that are out of this world. It comes with a starter pack of instruments and voices, and users can create their own unique soundscapes.

### What devices does Tomofon support?

Tomofon is currently supported on iPad devices.

### How much does Tomofon cost?

Tomofon is a paid application priced at $28.99.

### When was Tomofon last updated?

Tomofon was last updated on June 27, 2023, with version 1.2.0.

### What is the age rating for Tomofon?

Tomofon has an age rating of 4+.

## Version history (last 3 releases)

### 1.2.0 — 2023-06-27

- Support for MPE keyboards: for hardware, AUv3 and the built-in keyboard in the standalone app!
- Added a Body parameter that simulates different instrument bodies and materials
- Added filter types (now there is LP, HP, BP in both 12 db/oct and 24 db/oct)
- Zoom and Scroll functionality in Audio Model Editor
- Controller sources (and MPE state) can be locked so they won't change when loading a new preset
- Custom tunings support (opens .tun files)
- Pitch Zone graphical representation are now rendered inside the curve tool
- Various bug fixes and improvements

### 1.1.1 — 2023-03-09

Now you can import Model packs into Tomofon

### 1.1 — 2023-02-16

No release notes.

## Apps similar to Tomofon

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Phase Monkey — Poly Synth](https://appshunter.io/ios/app/phase-monkey-poly-synth/id6452880369) | 4.8 (17) | $5.99 | Music |

## More apps by Klevgrand Produkter AB

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- [Esspresso](https://appshunter.io/ios/app/esspresso/id1037999669)

All apps by Klevgrand Produkter AB: https://appshunter.io/developer/1118902192

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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 2026-08-25.*