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midiFILTr-PG Probability Gate MIDI Effect

iTunes Description:

midiFILTr-PG is a Probability Gate MIDI effect designed for Audiobus 3 but also usable with CoreMIDI. midiFILTr-PG listens to MIDI input and based on random chance mutes some of the incoming notes to make a busy, repetitive stream of notes a little more interesting and sparser. It has four modes:
Gate Mode - One set percentage to be muted for all notes. Also includes Gate On Repeats (when a note passes through unmuted, also pass through X more notes after) and Gate Off Repeats (when a note does not pass through the gate, also mute the next X notes) to make things a little more interesting.
Note Mode - Each note in the scale (C, C#, D etc) has its own percentage chance to mute incoming notes.
Sequencer Mode - Every eight notes has a different percentage chance to be muted. Can also change the sequence length to be less than eight.
Thru Mode - Nothing is muted, normally not used but there if you need it.
If midiFILTr-PG is inserted as an Audiobus 3 MIDI effect it should be setup and work automatically. If you wish to use it without Audiobus you can toggle the CoreMIDI input and output and use it that way.


iTunes Description:

ChordFlow is a chord sequencer with a unique 4-track polyphonic arpeggiator, extensive chord library, MIDI out and Ableton Link support.

"It is intuitive, educational, inspirational and most of all FUN! From the moment I started the app up, it was a joy to explore." (Jordan Rudess, Dream Theater/Wizdom Music)

Use it as a songwriting tool:
Discover inspiring chord progressions and arpeggiator patterns for your new songs. Try re-harmonizing your existing songs using advanced chords from the library containing 50+ chord types.

Use it as a backing track tool:
Create a chord progression, select a looping mode and practice your solo on your favorite instrument or sing along with ChordFlow.

Use it for live performance:
Prepare multiple sections with different chord progressions and different arpeggiator patterns. Loop a section or a specific chord, jump between sections or chords on the go. Edit arpeggiator patterns while playing to add variation to your performance. Play in sync with other apps using Ableton Link.


- More than 50 chord types available.
- Intuitive tools for drawing arpeggiator sequences.
- 1 to 32 steps arpeggiator
- 4 tracks in a arpeggiator sequence.
- 3 sequencer looping modes: one pass, loop selected, loop all.
- Quantised jumps between sections.
- A song can be split by any number of sections each containing different chords and arpeggiator sequences.
- Songs can be saved on disk.
- MIDI Out to any CoreMIDI compatible app, USB or WI-FI
- Ableton Link support

Midiflow Adapter for Audiobus 3

iTunes Description:

This MIDI app for Audiobus 3 allows you to include music apps, which don't support Audiobus MIDI but only Core MIDI. It creates permanent virtual MIDI ports for input and output. After distinctly selecting each of those ports in your "legacy" music apps, they can receive and send MIDI from/to Audiobus 3.

+ Connect up to 10 receiving apps (like synthesizers)
+ Connect up to 10 sending apps (like sequencers)
+ Use multiple instances of this app in Audiobus

NOTE: This app requires Audiobus 3. Insert it into one or more MIDI input and output ports. Furthermore, this adapter only works with apps that allow you to select MIDI ports for sending and receiving. It won't work with apps that have no MIDI setup page.

IMPORTANT: Connecting apps via Core MIDI is an advanced topic. If you haven't done it before, please become familiar with it prior to downloading this app.

Audiobus 3 has introduced a powerful MIDI routing system that makes interconnecting MIDI apps a lot easier than it was before. However, not all music apps support this new system, yet. Midiflow Adapter makes those apps compatible, by translating between the "old" Core MIDI system and the new Audiobus 3. This, however, only works with apps that let you to select MIDI ports for input and output, or at least the MIDI channel. It is not enough if these apps create their own virtual MIDI port.

Midiflow Adapter creates 10 permanent virtual MIDI output ports. This means that you can use up to 10 music apps with this adapter. For setting it up, start Midiflow Adapter. Then, start your first synth app that you want to connect with Audiobus via this adapter app. Go to its MIDI settings and activate reception on the MIDI port called "MF Adapter Out 1". It is essential that you deactivate reception on all other ports. Now, go to Audiobus 3 and insert MF Adapter into a MIDI output slot. In the input slot, add any other app, like Midiflow Keyboard. When you switch to Midiflow Adapter, you can select which of your synth apps the MIDI data should go. In this case, it is already set to "Out 1", so you're ready to go.

For your second synth app, do the same steps, but select MIDI port "MF Adapter Out 2", and so on. Then, you can select it in the adapter app.

The procedure is identical to the one for receiver apps (see above). However, you need to configure the MIDI output settings instead of the input settings. Midiflow Adapter creates 10 permanent virtual MIDI input ports for that purpose. They are called "MF Adapter In 1-10".

Some Core MIDI apps don't allow you to select the input/output ports, but only the MIDI input/output channel. In that case, they receive on all ports. The only way to selectively trigger them is to assign a unique channel to them. In Midiflow Adapter, you can then select this channel as input/output.

If one of your music apps neither supports selecting the MIDI port nor setting the MIDI channel, you cannot use it with Midiflow Adapter.

Practice Book

iTunes Description:

### Launch sale! Practice Book is 50% off for a limited time! ###

Create an awesome collection of tabs and chords for guitar, ukulele and bass! Practice Book is a gorgeous, focused app that lets you find, play and edit songs from all your devices.

• Chord highlighting
• Fullscreen mode
• Great typography
• Search, sort and group songs
• iCloud sync with Practice Book for iOS
• Favorite the songs you play most
• Automatic weekly backups
• Library export

Practice Book is for beginners who are still learning the basics, as well as experienced players who already have a large collection of tabs.


I’m an indie developer in Portland, OR. Let me know what new features you’d like to see in the next update. Contact me @OnceLivingApps, or send an email to

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Audio Evolution Mobile Studio

Google Play Description:

The most powerful multitrack audio recording studio on Android with support for over 250 USB audio/MIDI interfaces (*) ! Produce an entire song or record your ideas, play virtual instruments, add drum patterns, edit audio and MIDI with unlimited undo/redo, mix, add real-time effects, automate and a lot more! An entire music studio in a small package.

The use of MIDI instruments is now included in the price (previously, an in-app purchase was required)!

• Multitrack audio recording / playback
• MIDI sequencing
• Drum pattern editor
• Low latency and multichannel recording/playback using a USB audio interface (*)
• Non-linear non-destructive editing with move, trim, split, cut/copy/paste, remove, cross-fade and range editing
• Virtual instruments based on SoundFonts
• Loop playback
• Automation of all mixer and effect parameters
• Latency correction for track synchronisation
• Import of WAV, MP3, AIFF, FLAC, Ogg/Vorbis audio files (m4a and others when running Android 4.1 or higher)
• Mastering (mixdown) to stereo WAV, MP3, AIFF, FLAC or OGG file
• Software monitoring for USB audio devices and some Android devices that have low enough latency
• Sample rate conversion
• Metronome
• Punch in/out
• Zoom down to the sample
• Each track has controls for volume, panning, mute, solo, arm, 3-band EQ with mid-sweep, 3 insert effects, 2 effect sends and output bus selection
• Unlimited number of tracks
• Unlimited number of groups
• Real-time effects including: chorus, compressor, delay, dual delay, reverse delay, reverb, flanger, noise gate and many more!
• Offline effects: fade in/out, normalize, reverse, pitch shift, time stretching
• Unlimited undo/redo for editing facilities
• Several grid options for aligning your samples (with tempo and time signature settings)
• Repeat samples with several options to create loops
• Add markers and quickly jump to them
• Projects are interchangeable with our desktop DAW Audio Evolution 5
• Export to other DAW's by rendering all tracks to separate audio files (stems)
• In short: a complete portable multitrack digital audio workstation (DAW) that will replace your 4 track recorder or tape machine, almost for free!

(*) The following in-app purchases are available to expand your studio:
• USB audio interface support (you can also purchase USB Audio Recorder PRO). Please see our compatibility list here and for more information here:
• FX pack 1 (distortion, overdrive, speaker sim, wah wah, phaser)
• FX pack 2 (10-, 15-, 30-band graphic EQ)
• ToneBoosters pack 1 (Barricade, DeEsser, Gate, Reverb)
• ToneBoosters EQ with frequency analyzer
• ToneBoosters Compressor
• Vocal Tune with two-voice harmonizer
• Loop/sample packs
• Soundfont packs

If you have any suggestions, questions or want to report a bug, please contact us! Instead of a negative review, please have the decency to contact us so we can actually solve your problem!

Free trial version of Audio Evolution Mobile Studio:

Online manual:

To prevent your device's mic from picking up what the speaker is playing back, we recommend using either a USB audio interface or a headset.
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