inter app audio

KASPAR – Review

KASPAR is developed by Yonac

Available from iTunes App Store

KASPAR (resisting obvious children’s cartoon references) launches with a fierce dragon logo before quickly revealing the synthesizer and all its glory. It is an immediate impression that perhaps intentionally conveys to the user that they just released a majestic, mythical beast. This is however no myth.

In order to properly control such power a proper cage is needed to house it. What I’m saying is don’t expect to fully enjoy KASPAR on anything older than an iPad Air. The developer has included this warning in the App Store description. Somehow a couple ding dongs still wrote bad reviews because this powerful new synthesizer doesn’t work well on their old iPad 4s. Who’s fault is that? Come on. There is a very fair warning upfront that they ignored. Makes as much sense as complaining to the makers of a gold fish bowl that their product sucks because they can’t fit their pet shark in it. I’ll detail the recommendations a little more at the end of this review.


KASPAR is a massive synthesizer or really 8 synths in one with 4 touch controlled morphing (or Auto) groups. Each synth has 3 oscillators (totaling up to 24) with multiple waveforms. Dedicated filter envelopes, an arpeggiator, chord maker, 6 dedicated mods slots with 20 possible targets, 2 LFOs and more. With a strong morphing capability, loads of high quality sound effects, there doesn’t seem to be any limits to what you can come up with.

The 4 group morphing unit is controlled by touch and KASPAR can record your own custom morphing shapes that you draw. Each of the groups are x and y controls. The morpher allows for deep sound modulation control with an endless pallet of possibilities, shapes and sizes. Reassign synths easily to any group, control the x and y curve speeds and enjoy manually shaping your sound or set to “Auto” and watch it go on and morph whatever mode(6) and loop(4) type you choose.


In KASPAR it’s all bout layering. So of course there is a screen to make general adjustments to each of the 8 synths, volume, pan, and both FX bus levels. Similar to a standard mixer.


Choose from about 300 presets. Better yet, make your own synth patches from a variety of common and several unique waveforms for each of the 3 oscillators. All have pulse width/ timbre controls, and oscillators 2 & 3 also have ring modulation. The overall combined sound can have noise added with a wide tone control, and a glide option. Play polyphonic or mono with legato on or off. Pretty standard stuff. It’s the variety of unique waveforms that can spice things up. There are some interesting shapes to choose from and they can make serious impact on the sound that synth makes.


As you edit each layer of synths you will find a nice selection of independent filters to enable. All have their own unique qualities. The Fat 70’s, Formant and Comb are very cool. Mix and match your favorites or whatever your final patch design needs. They are all excellent. I couldn’t find anything lacking with the filters. I just wish I could copy a filter setting to use in a different synth layer. Come to think of it, that would be nice to have for the oscillators or other parameters as well.


Each synth has its own set of 2 LFOs and an envelope. Each LFO has 7 possible waveforms. On the Mod page (not shown) you can have up to 6 different modifiers for each synth with 20 possible sources. For a single synth having just 6 mods, might seem like it’s not much, but remember we can make up to 8 layers of 6 each. That means there are up to 48 possible mods throughout the layers. It adds up and doesn’t pose any significant limitation.


The 2 FX busses can both have up to 8 effects units selected. The signal flow is easily adjusted by touch, drag and drop. For those not familiar how busses work, it means you are sending a chain of FX to the overall sound, not inserted to each specific synth. However each synth has bus controls to adjust how much of each busses chain of FX are applied to them. It would be interesting to see what it would be like to have independent FX chains, varying units and parameters for each synth someday. I don’t think even the latest iPad Pro could handle that today? That said 2 busses are nothing to shrug off. The FX units are all high end and custom made for KASPAR. There’s plenty of interesting options and combinations.


Being a stand alone synthesizer, KASPAR wouldn’t be complete without its own recorder. It can also be used to play a imported loop along with whatever sound the app is making.

With such an enormous range KASPAR doesn’t just stop here. Each synth also has its own multi mode arpeggiator and chord maker. Program your own chords to a single key in a snap. That’s become more useful than I had thought it would.

Put it all together and you have one colossal or “super synth”. Even my iPad Air 2 performed well with heavy loads of layers, FX, arps, filters and morphs running with the “Best” audio generation quality at 256 buffer through Inter-App Audio in Cubasis. Yonac really did a good job with efficiency here. They also thoughtfully made sure to include full MIDI services, Audiobus, Abelton Link, and AU plug in.

KASPAR sports up to 12 polyphony (tested with 8), a pleasant interface with after touch and velocity controls. A very playable synth that unlocks layered sounds not seen on iOS until now. It is making summer of 2017 one of the best for synth lovers.

As I mentioned near the beginning of this review here are more device recommendations for this super synth. You should have an iPad Air, iPad Pro, iPad Mini 2 or newer. If you must try KASPAR on an older device like an iPad 4 and are willing to take the risk and not blame the developer, you might have decent results if you turn the buffer to 512 and the audio generation quality to its lowest or “Good” setting. Just know that you probably won’t always be able to use all 8 synths, mods, FX, arps etc.

*Tested with iPad Air 2

Mood – How to Analog Right

Mood is developed by apeSoft

Available in iTunes App Store

apeSoft continues their offerings of reimagined classics ( i.e. iVCS 3) with Mood. A “personal interpretation” of the Analog Synthesizer by Eugenio Giordani. As apeSoft fans would expect, Mood is a faithful sonic reproduction with several modern additions that make it more than just another virtual analog synth. 


More than just another 3 oscillator VA Synth, ( is there an echo in here?) Mood comes packed with loads of user customizable widgets and supports, like an easy to use sampler, audio unit v3, full midi, Inter-App Audio, Audiobus 3, and so much more. 

This mono or up to 16 voice polyphonic synth does deliver quality at all levels of design and sonic exploration.  With the built in sampler you’ll have many more avenues of sound designing to explore. Dig in to micro details by assigning various widgets to nearly any parameter by a double tap on the knob. I’ve been up very late obsessively tweeking many different things. 

As shown above the aforementioned double tap on a parameters knob brings up the widgets screen to make those specific adjustments. It can get a bit tedious for those not interested in audio designing, but for those who are, it is very welcome. These should look familiar to anybody who has used any other apeSoft offering.  The widgets bring audio designers a mass of possibilities that can lead to some extreme detail in their sound creations. 

With the sampler you are open to many more options in possible sound designs. This is another example of how Mood separates itself from the usual or hum drum typicality of common VA synths. Import samples or record new ones from the environment or people around you. Mix and match with the FM or Wave unit, various effects, sub oscillator sounds, filters or LFOs etc. There’s not much limiting your imagination being brought to audible life. 

Although not shown in this review, there is a full service arp available. It’s accessed a little awkwardly by turning the XLFO wave knob to the lowest right hand wave form. I’m sure there’s a good reason for this, but it struck me as a bit oddly placed. Nevertheless, it is there. It’s possible I’ve had a major lapse of understanding from one too many late nights micro managing some sound I was working on. 

Moods effects are top notch. The Reverb unit has a vintage or distinctly different modern settings option and sounds very clean. That is until the powerful and grungy Distortion unit is enabled. There’s an excellent Ring Modulator for adding some unique tonal qualities. Of course a very nice Delay effects as well. 

I should mention the filters. The well designed Moog-like filters are as good as any can get for iOS. Personally I think they may be the best so far, but that’s just me. 

Overall Mood is not your ordinary virtual analog synth trying to be a perfect copy of a classic. It’s a loaded baked potato with double the flavor and satisfaction. Is it perfect? Maybe not, but what is? It’s about as perfect as I think it can be minus a few minor UI issues. Its very stable (using iPad Air 2 for this review) and with a quick buffer, it’s largely lag-free. Except for maybe a loaded 16 voice sound with heavy Reverb,  running through audiobus to a DAW with an effects unit in the chain, this synth rarely causes any grumbles or crashes. It’s hard to find any reason to no recommend Mood highly. 

Music Studio 2 Review – Tried and True

Music Studio is developed by Alexander Gross of Xewton

Available in iTunes for Apple devices, and Now GooglePlay for Android


Music Studio has been with us (on iOS) for years. It was one of the very first studio type music apps I ever bought way back when I had my iPod Touch 3G. It has seen steady and consistent updates keeping it on the level with our rapidly growing music needs. Now it’s even available for Android users in the GooglePlay store. I haven’t tried it on an Android, and honestly can’t comment about that version, but expect it works just as well.

This all in one music production suite is packed with everything you need to create music from start to finish. Over a hundred tracks sequencing, sampler, twin keyboards, custom drum & chord pads, 10 effects units, note editor, Automation, Audiobus In & Out, Inter-App Audio In and Out, MIDI, 100 Drum Loops…and more and more.


There is a free, lite version to dip your toes into if you’re not sure about buying straight away. The first thing I noticed was the quality and variety of instruments. Hundreds of studio recorded instruments come packed in with the purchase of the app, and dozens more can be purchased. Every relevant instrument is available, minus only a very few. Whatever might be missing shouldn’t be an issue these days with all the other music apps around filling nearly every gap. With MIDI, Audiobus and Inter-App Audio input/output fully supported, you’re only limited by you’re own collections of samples and instrument apps. This was the first production app I could find a Digerydoo that sounded good.


The twin keyboards can have their own instrument assigned and played. The bank of customizable chord buttons above reflect what’s being used as per your own preferences. Assigning individual percussion instruments or samples to the drum pads can also be used. Trigger and loop away, or record a sample with your device or external microphone and apply to one of the pads to use in your composition. It’s easy stuff.


Some might wonder where the mixer is? Simply put, it’s not here in the traditional sense. However every track can be mixed individually. Instead of a mixer page, just select the track to adjust the pan, level, effects, mute or solo etc. It can be a little bit of a challenge to get used to if you are more accustomed to a dedicated mixer board page, but the bottom line is, nothing’s really missing. It’s just being done differently. Most people aren’t going to be overly concerned with this unless they start piling on several dozens of tracks. Then the missing mixer just might prove to be a bit of a obstacle.

It’s never bothered me, and on the plus side a mixer page is indeed being developed for Music Studio 3. I have confirmed this directly with the developer.

Editing a tracks sequence, or sample is quick and easy. Just double tap the area within the track to bring up either the sampler page or the sequencer note editor page. Quantize, transpose, write, copy and all of that stuff should feel as familiar as it looks. Working with automated FX work much the same way. It’s a very straight forward work flow. This is very intuitive and has a very gentle learning curve. Nothing clunky or unnecessarily complicated. Smooth.


Moving on.

Music Studio 2 also has 10 built in effects units. They have improved over the years and you can assign as sends, inserts or use globally in multiples. As I mentioned above there’s automation. So making creative effects that move with the music are at your finger tips, just like any respectable studio type. All the audio effects mainstays are accounted for. Reverb, Delay, Phaser, Stereo Widener, Filter and so on. I find the EQ a little in the lite side being a simple 3 band, but that’s not much of an issue these days with Audiobus and Inter-App Audio providing such easy access to your other apps that are more specialized. What is available gets the job done and doesn’t sound cheap.


Music Studio is known for its excellent MIDI support. Whether you use virtual MIDI with other music apps, or hardware Music Studio keeps up and makes things easy on you. Reliable is the word.

There are so many great things to bring up, I can’t cover every detail. If you need more specifics, details or exact numbers just visit Xewtons Web Site. You’ll find more than just specs. There’s a thriving user community forum to help answer questions, get support or just share. Assuming the extensive in app help doesn’t put you back on track. No pun intended.

In conclusion, Music Studio stands confidently with other iDAWs, is priced very well, has better instruments than others, is a stable, quality production app with tons of tools and all delivered with a pleasantly clean interface. It’s great for those just starting out and won’t overwhelm newcomers and pros will like its longevity. It has been reliably developed with excellent consistency by a developer who is listening to his users wants and needs. Despite no separate mixer, all the same parameters can still be adjusted and mixed without skipping a beat. Few limitations and loads of options, Music Studio 2 remains an excellent choice for everybody.

Shoom Synthesizer- App Review

Shoom Synthesizer is developed by: Yuri Turov

Available from iTunes


Shoom Synthsizer is a fantastic X/Y touch controlled instrument for iPad. 3 polyphonic synths in one.

An intuitively designed interface clearly emphasizing ease of performance with a great amount of playable screen space makes this super fun to play. 


3 simultaneously playable synths each with their own set of two multi-waveform, FM cross modulation oscillators are at your disposal. Each synth has its own noise, and volume control as well as the standard ADSR and LFO basics. A handy 4 pole low pass resonance filter and overdrive are also included with each. Nothing fancy, but made for easy patching and variable sound types. From crunchy, screaming leads, to booming bass lines, and on to amazing drones. 


Shooms built in stereo delay and reverb effects stand in nicely for simple sound effects. I’d say they are pretty good for what they are. Many users have said that Shooms strength is with making drones. I agree, but wouldn’t say that is all it can do. There’s plenty of room to get creative with this and have some pretty unique sound scenes to play. 

Of course it has Inter-App Audio and Audiobus 2 supports. So far I have found both to be very stable on my iPad Air 2. Though like any iOS synth the more active voices being used, the more the chance of distortion.

I love that each synths note can be played independently and / or held. Get all ten fingers involved. If your digit dexterity is above average, you could do some impressive things. Even with average finger dexterity like me, you’re going to smile. It doesn’t take long to get the hang of Shoom, and I found it to be very easy, very quickly. More importantly the sound quality is fantastic. This is one grand instrument that has more to it than meets the eye. Sure you aren’t getting a massively powerful synthesizer, but you do get quality.

Only thing I felt I was longing for was user sample import. Is that a big deal? Maybe not, but I’d like the option. 

It’s a bargain, it sounds fantastic, and it’s fun. A no brainer purchase. 

Oscilab – Review Updated 9-10-14

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Oscilab is created by 2Beat
Available the iTunes App Store

Oscilab has been on the radar of anticipated new music apps and now finally hits the App Store.
It is a unique wave sequencer where by touch, drag, and sweeps will determine much of the music making experience.

Right off the bat I was feeling great and very happy with how it operates even if it was a little unusual. Didn’t take long to get comfortable with this at all.

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28 wave shapers, 6 channel mixing, FX and great on the fly live sound manipulation for each channel independently via X/Y pads and some pretty nice synthesis and drum options are some of the many features. Everything is easy to find and access. Great interface. I likey!

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Exploring this unique and fun new sequencer has been nothing short of fun.
I really like how easily they made this for doing live tweaks to the sounds. With scenes that can wait until the current one has played out before the next seamlessly enters the flow, and instantly changing a sequence without any drop outs is sweet.

Shaping the sounds wether they are loaded samples or your own synth designs at a whim rocks.
The FX are pretty simple if not a bit bland, but no problem just run Oscilab through Audiobus or IAA and use your other FX apps to…. To…to… Hang on?

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Wait a second? Where’s the Audiobus or Inter-App Audio support?
I assumed it was available, but where?
No…no…..no…..NO!
Just AudioCopy, “Open In” and SoundCloud for sharing….WTF? This isn’t 2009.
Did this cool, fun, impressive app really just get released without the most basic and expected supports for inter app connectivity?
It can’t be? Not again…… Geeeez! How frustrating.

This isn’t happening, is it? Well, I guess so, never mind.
I don’t mean to be harsh, this is a cool new app, but come on. Call me when it can actually be integrated in the most common workflows we actually use these days. Then I’ll finish the review. Until then this ones on hold.

UPDATE

Since I initially wrote this half review Oscilab has seen significant updates with great improvements. I’ll try to be brief and to the point.
Now with Audiobus support and Inter-App Audio, improved midi functionality, and other nice tweaks Oscilab is my new favorite goto sequencer.
I love how simple it is to use. It makes a
To of sense and doesn’t try too hard to be different.

Highly recommended!