bs-16i is a 16 multi-timbral playback sampler. It supports SoundFont and DLS (Downloadable Sounds, and can be used for keyboard instrument, MIDI sound module, and MIDI player.

bs-16i has the synthesizer engine that has been adopted for many professional / commercial equipments. Using SoundFont / DLS libraries, you can play with your great number of Instruments. With Hi-Res Engine option prepared as In-App purchase option enables high-quality and low-noise audio outputs by 100% floating point calculations.

All standard MIDI messages are supported, and your iPhone and iPad can be used as a GM (General MIDI) sound module by using pre-installed GeneralUser GS SoftSynth v1.44.sf2 (S. Christian Collins).

As a keyboard instrument, you can play with scalable screen keyboard, pitch bend wheel, and many control change controllers.

Internal MIDI player supports SMF (Standard MIDI File) format, and bounced wave can be shared with other apps using AudioCopy.

SoundFont, DLS and SMF files can be imported from iCloud Drive, Dropbox, etc, directly from bs-16i.

Moreover, this application supports Core MIDI Interface like as IK Multimedia iRig KEYS / iRig MIDI, YAMAHA iMX-1, LINE6 MIDI Mobilizer 2, Apple Lightning -USB Camera Adapter with USB Generic MIDI Interface, and Bluetooth accessory (Miselu C.24, QUICCO SOUND mi.1, etc). With them you can communicate with other external MIDI hardware like as synthesizer, sequencer. Also bs-16i can be background and drived from other apps using Virtual MIDI.

Audiobus 3, and Inter-App Audio is supported. You can send bs-16i's output stream to other apps.

Also AudioUnit v3 extension is included. You can use bs-16i in GarageBand, BeatMaker3, AUM as plug-in instrument.

- To load the specified soundfont / DLS file, the device have to ready free memory larger that file size of it.
- This application collects following information: Device name, OS version, User Location, SoundFont / DLS file name, CoreMIDi I/F name.

What’s New

Version 3.1.1

- Improve AUv3 UI
- On importing from iCloud, multiple files can be selected (Multiple file selection can only be used with iOS 11 and iCloud Drive)
- Fix some stability issues
- Audiobus SDK 3.0.5
- Fix that MIDI messages from the internal file player were not delivered to Audiobus

Ratings and Reviews

3.8 out of 5
5 Ratings

5 Ratings

Dvasa ,

Nice but...

This is a good app and love ability to play midi files through soundfonts...there's a bunch of use cases but in my case it's for midi backing tracks for performance and in this instance accessing the playlist of midi files could be more user friendly, there's too many levels to drill down. Also, once in the playlist, why not let us just playback from there without having to close that section.
The other issue is that I can't find a way on iPhone to change the master reverb setting; iPad makes this easy? Some songs have too much and need this turned down.
Good app that could be great...
The option to save changes

Captbeef ,

Affordable, good sounds and easy to use

Many great real instruments come as standard but after downloading some free 3rd party sounds fonts (soundfonts4u) this is now my go to app for piano and orchestral sounds. It may have been around for a while but sounds fantastic to my ears. Thanks.

RLVM... ,

Excellent app

This app is excellent and the developer consistently updates it and now we have AudioBus integration which is fantastic.

A great midi sound font synthesizer and the sound quality is excellent... With AudioBus integration it maintains a strong position in my arsenal of music apps.


bismark LLC
68.4 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.


English, Japanese

Age Rating
Rated 4+
© 2010-2018 bismark LLC
In-App Purchases
  1. Hi-Res Synthesizer Engine £4.99
  2. 128 Polyphony £2.99


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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