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Best Friend for K.O. II

Best Friend for K.O. II

App for EP-133, EP-40, EP-1320

61 ratings
18 reviews
#70 in paid Music
🎵 Music
$9.99

Details

Released
July 2, 2026
Updated
November 9, 2026

Developer

Brian Holt
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iphone
ipad
📈no. 70
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⭐18
Reviews↘︎
📝1+ tags
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❓8 answered
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About

This app acts as an extended display and editing suite for Teenage Engineering EP-Series samplers. Connect your device via USB-C to view waveforms, manage pads, and edit samples with various tools like repitching, cropping, and EQ. It allows for bulk management and uploading of audio files from your device.

✓Extended display for EP-Series samplers
✓Waveform and pad setting visualization
✓Sample editing (trim, attack, release, pitch, pan)
✓Bulk sample upload and management
✓Audio extraction from videos
✓Sample repitching and normalization
Show original description
+1

What's New in Best Friend for K.O. II

3.5

November 9, 2026

New Features and improvements: - Directly Record System Audio (iOS 27+ only) - New Multi-sample editing tools: strip silence; change gain; reverse; find loop point; and detect pitch. - Improved support for multi-samples created outside of Best Friend - Keep screen awake setting - Loop buttons for MIDI playback - 0-axis on zoomed-in wav Fixes: - Samples loaded in high 900 slots could prompt uploads to attempt uploading to slot 1000+ - Resync offline bounces before bouncing

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Charts

Top Paid

📈 70+62

Music

This app rose +62 positions in Music chart.

Last updated on November 10, 2026.

User reviews

Most RecentHighest RatedLowest Rated

Amazing work !

Outstanding, thanks!
FAFred Alarie

Please fix Chords and Key mode

Please fix the chords. For some reason sometimes samples aren’t playing as chords on the app, only playing as “one” instead of “key” mode. This also occurs on the KO II
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Response from developer

Hi this is a hardware setting that needs to change, not a bug in Best Friend. Your sample needs to be in Keys Play Mode otherwise it will be monophonic. You can change it in Best Friend on Pads > Play Mode > Keys or from the hardware SHIFT + SOUND > use - and + to the first setting > turn the X knob until KEY. A Mute/Choke group will also prevent chords

rlly good !!

incredibly polished app with super quick connection from device to phone
WWOLFGIRRL

Amazing

Best app ever for KO II
MMy-black-rainberry

So good, loving it so far

Keep up the awesome work on this! Loving the app so far. Would be really cool if there’s a way to get the keyboard to be multi touch so can play chords, but I know you can still play them with the chord buttons.. so much fun to be had!
JJeoqw1
See 13 more reviews

Developer apps

Mother MIDI
Mother MIDI

MIDI Chord & Arp Controller

🎵 Music
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FAQ

What is Best Friend?

Best Friend is a companion app designed to work with Teenage Engineering EP-Series samplers like the EP-133. It provides an extended display and advanced editing features for your sampler.

Do I need a Teenage Engineering sampler to use Best Friend?

Yes, connecting to an EP-133, EP-40, or EP-1320 via USB-C is required for the app to function. It acts as an augmentation for these physical devices.

What kind of sample editing features does Best Friend offer?

Best Friend allows for permanent cropping, repitching to reduce file size, normalization to increase volume, reversing playback, converting stereo to mono, changing sample rate, and applying a 3-band EQ.

Can I manage multiple samples at once with Best Friend?

Yes, the app supports bulk operations for uploading samples from your Files and Videos, deleting samples, moving samples, and sharing samples.

Is Best Friend free to download?

No, Best Friend is a paid application. It is available for purchase at $7.99.

Does Best Friend have ads?

No, Best Friend does not contain advertisements. It is a paid app with no in-app purchases or ads.

What devices does Best Friend support?

Best Friend is currently supported on iPhone devices. It requires a USB-C connection to your Teenage Engineering sampler.

How often is Best Friend updated?

The latest version of Best Friend is 2.2, and it was last updated on July 12, 2026. Updates typically occur to improve functionality and compatibility.