Voice changer effects

[Nightbless]

Hello everyone,

I'll looking for some help and suggestions by experts.
We are developing an application for Android and iOS that will offer, above other things, a voice changer feature.
I am the designer/producer of such application and i don't have a great knowledge for what concern the audio field. We have an expert programmer but he never delve too much into audio too.

The audio will be recorded and then the effects will be applied, it will not be in real time.

We are going to use FMod as audio engine, unluckily the effects offered by FMod are quite limited. We would like to have a wide selection of DSP effects , like the ones in MorphVox Pro, we used as base to define some presets for our final effects. Problem is we don't have access to the API of MorphVox so we are looking for a DSP library that could offer a similar selection of effects and access to API.
We are currently looking at the Littleendian SpectrumWorx SDK , they provide a good selection of effects , but they lack some very important one like chorus , speed, an equalizer and others. Another problem we found is their VST plug in can't be loaded in FMod Designer nor FMod Studio.

Do you have any tips on other libraries that could help us in the development process ? Both free or commercial but usable with FMod.

Do you have suggestion in general ?

I apologize if i didn't explained myself well enough and for my english, i'm not a native speaker.

If you think you may need more details for a better answer , just ask and i'll try to be as precise as possible.

Thanks a lot for your time.

[Spiritos]

I'm not sure I understand your needs (also not a native speaker) but I know a few iOS apps like 'voicesynth', 'vocallive', 'Vio' or 'Improvox' that can add effects in real time. Also ofcourse certain iOS DAWs have the ability to apply FX to (vocal)tracks.

Not meaning to discourage you but especially Vocallive is quite amazing already. Not sure what another app would add for me -given the 'non real-time' restriction.