I’m pretty sure that the thing I paid for, which was about 40 quid, had a lot more than it does now… I want to either see a full refund or full upgrade. Not buying from this firm again till that happens.

After a back and forth with IK concerning an intermittent problem where state settings involving multiple instances of MixBus AU3 are NOT being saved, I received the following. ‘Thank you; we will pass this information on to our testing teams; however we should note; while Logic Pro can utilize the AU version of Mixbox; we are currently not supporting that particular mobile DAW but this guidance may have changed.’ So IK’s not inexpensive app is unsupported on Apple’s flagship DAW. Either Apple are unaware of this, or neither company wants to take responsibility. Yet both are happy to take customers money. Presumably on the basis of ‘it might work, but nobody is willing to guarantee that. Buyer beware.’ It’s disappointing. Since I’ve had Logic Pro for iPad MixBox has become my most used plug-in. But now I discover that neither company feels obliged to make sure it actually works! IK’s lack of support, therefore, should be clearly stated up front so that prospective customers do not buy a product for use with Logic, expecting it to work and any bugs to be squashed in timely fashion.

Want to buy the full version , but at the moment I won’t, as when you save you get no option to type in a preset name. You can make new folders but it won’t let you name a preset file. The only option is to save and it calls it ‘preset’ If you go to delete a preset it will , but as soon as you touch the preset name window afterwards the app closes / crashes. Glad I didn’t pay out for the full version , frustrating as it is excellent.

The best effect collection on iOS. All that’s needed for great mixes in a well designed package. A joy to use with its great interface. What I’d like next as in app purchase is the Tape plugin.

It sounds really good.. but for this to be useful I need a master dry/wet so I can bring in the effects and fade them in and out as I please. 5 star and I’d buy the pack with the dry/Wet fader

Top notch software, as usual with IK. stuff for serious musicians, the dabblers are moaning about how it's not 'free', the rest of us are impressed

Whenever it’s on sale, this is a splendid collection of modules. Something that really can make a difference when used creatively, and it offers a large variety of combos. The new IAP is likely to be of the same quality, but it’s too expensive. Who pays almost £18 for a reverb on IOS? The world economy is on its knees. Many developers recognise this and are having sales, or offering discounts. So guess where the money goes.

IMPORTANT UPDATE ON MY REVIEW - FOLLOWING MY UPGRADING TO A 2TeraByte iPad Pro M1: almost 1.5Tb of free space, and ALL ISSUES BELOW GOT CURED. To save reading, I hypothesised that my older but trusty iPad Pro 2 had an undocumented issue with an awful lot of Audio Units, in GarageBand, around the point where the SSD free space got down to 55Gb. I now believe this is effectively proven true, as the new iPad with a massive 2000Gb total SSD, has cured any issues with Mixbox and a lot of others (see point below about how other users may unwittingly have ‘tripped’ this 55Gb free SSD point). Now, I cannot say if the ACTUAL free space was 55Gb on my old ipad pro 2, or if really it was MUCH less than that, but iPadOS was hiding some use or making temporary use…in any event, I’d forgotten all about this issue, because it simply stopped happening once my free SSD space became massive. Apple should really document this - MicroSoft state min free HDD requirements, and now I am saying that I have determined that empirically, in my case, I found there MUST be kept around 70Gb out of the 512Gb of the ipad pro 2 SSD ‘free’ or else run into problems, which become unbearable at 55Gb. Last point on this - this is a big ask in practice, because with iCloud, Apple make use of the user’s own SSD, now again empirically I find limited to about 22% of the device’s SSD (previously there was no limit, and that was debilitating). So with 512Gb, knock off 70Gb for ‘safe’ use of Audio Units, then 120Gb for iCloud grabbing space on the SSD…that’s 200Gb nearly of the 512Gb, the device needs to have, just to run with almost no room to create anything! Astonishing really, but true in my use case. Below is my older/original review, the problems are solely related to free SSD, I urge users to deal with this undocumented issue before blaming the Developer….I am still a fan of this ‘rack’ arrangement, where modules are efficiently slotted in, and this Audio Unit has come a long way since the early days. I now find OTHER Audio Unit FX are crashing and having all my lovely painstaking tuning of settings, obliterated, zeroed, reset to default. Here’s what I think now is happening, that iKMultimedia are not entirely to blame for crashes etc - only MHO as a former IT man and now iPad Music creator: I have had a series of issues over the past months, and always the ‘free space’ of my iPad Pro 2 SSD is BELOW 55Gb. I am now aiming for 70Gb of ‘free ‘ SSD’ Space at all times, to run GarageBand i

All in app purchase and plug-in not found problems have been solved and despite the inconvenience and that Christmas was lined up (for me at least) to enjoy some music making, IK must have worked through the holidays to fix it, so I appreciate that. All is well and mixbox is working great, my projects are saved !! As for the app itself, it’s incredible for trying out new sounds, fine tuning your mix, or adding the odd filter, delay, or reverb. It’s unmatched on iOS and the plugins are all top class! It can be incredibly fun to throw a load of plugins at a synth and see what happens and I often find something usable, but it can also be useful for adding a subtle character, warmth, or depth to your sound. I hope IK continue to add plugins!

MixBox may be at the upper end of music app pricing, but it provides so much that the value for money is really there, especially if acquired when on sale. The 500 inspired design keeps each effect module easy to use, but effects chains lead to powerful results with presets providing a solid platform for new users to start from - my wife doesn’t have any deep mix engineer knowledge but in short order came up with a great sound on some of her vocals we recorded, the White 2A being the special sauce. I’m very impressed with the compressors, worth it just for them, although that is an area I’ve dug deepest. (Note: The Dec ‘21 updates have been a bit of a fiasco, IK have now resolved, although communication could have been better. A tiny remaining niggle is that MixBox now appears twice in the Cubasis 3 plug-in list, I believe one is with MIDI one without - I’ve seen other developers tweak naming to clarify this, but on the other hand I’d think Cubasis could do something too)