Q: how can I make my own IRs and import it to the Fiddlicator app
A (very brief): There are different methods how to get instrument’s IR, but the most simple method is to record sound of your hollow-body instrument when you knock on the saddle with a small steel rod (very gently of course!!!) while damping the strings with hand, towel etc. (you need to record just the sound of the instrument’s body not of the strings).
This sound is the IR – it usually needs some tuning (for example you usually need to decrease/increase gain, trim to max 16384 samples and you can filter out some frequencies, noise etc. I am using the Audacity sound editor (free) for these tasks (it is able to record it and tune it as well). I would recommend to save the IR file as a wav audio file (16bit PCM).
Then you need to import this sound file (wav) into your iPad (the most simple way is via iTunes->Application/Documents).
Q: Will be a version for iPhone?
A: Unfortunately I don’t plan releasing of the iPhone version in the nearest future. It will require re-writing of the UI and I need to find the way how to put all those tiny knobs to the smaller iPhone display (and I don’t have any iPhone for testing yet). On the other hand I will need to re-write the UI anyway for future development and when it will happen (I think it will be soon) then I will release also the iPhone version, but there are still some tasks which needs to be addressed first.
iPhone version is already available 🙂
Fiddlicator 
I installed this on my iPad Pro. Can’t get it to work properly. I wish it worked but even with external speakers it does nothing. The only thing that did anything noticeable was the sound bar. If you have a solution great. If not please refund my $4.99
I am sorry to hear it does not work on your device. Could you please describe more closely how is you iPad Pro connected in your audio chain (i.e. which device is used – like iRig, Alesis IO Dock, … etc.). You can ask Apple for in-app purchase refunding (http://www.imore.com/how-to-get-refund-itunes-app-store), in the case there will be any problem with this procedure, please drop me an email to fiddlicator@gmail.com.
Hello, and thank you this app!
Is it possible to load custom IRs to the iPhone app, and
Can wav files of the instrument being played (not being tapped with the steel rod) also be used as IRs?
Yes, it is possible to load custom IR to the Fiddlicator. It just needs to be imported via iTunes, or the most simple way is to use some file manager (like Documents) and select Open in… from the IR and then select the Fiddlicator application. The IR is then imported.
Unfortunately it is not possible to directly use an instrument sound as the IR (theoretically you can get the instrument IR by deconvolution of the pickup signal with the microphone signal, but all frequencies need to be equally played etc.)
Hi i notice a bug, when i open fiddlicator in bias fx on ipad pro, it remain opened in background dring the battery, the only way to stop it is turn off ipad.
Hi, does it remain opened if you close the Bias FX? Could you please also check he Background audio option in the Settings is disabled?
Hi there, despite being PC literate I am dumbfounded about how one loads an IR onto an ipad.
I am using ios12.4 and while I have managed to import an ir wav file into my itunes folder, I am unable to find any app on the ipad which allows the ‘open in’ option so I can point the file at Fiddlicator.
Nor can I find any of the named ir’s (example violin2) as a wave file anywhere on the ipad.
Obviously I am new to ipads, please can you advise how to proceed?
Many thanks.
I am using the build-in Files application, so I can open the file menu with long-press on my IR wav file icon and then I can click on “Share”. Then you need to scroll right over available application (if the Fiddlicator app icon is in the apps list) and select “More” and then you should find the option for copying of this file to application Fiddlicator.