What’s New

Version 1.6.2

- Compatibility fixes for iPhone X
- Updated Audio Bus SDK to 3.0.3

Ratings and Reviews

4.7 out of 5
112 Ratings

112 Ratings

KelIy Clarkson ,

Essential iOS production tool

I don’t even use the included sound engine that much and this is still one of my top three iOS music production apps. Krft is my main sequencer/arranger on the iPad. I’ve had sync issues with AUM but have found that changing sample rate to 48k in AUM causes perfect long term sync. I hope a fix is possible to improve 441k sample rate sync but until then it’s a minor issue I can work with.
The two main reasons krft shines over other midi sequencers for me:
The piano roll/step sequencer layout is just perfect. It’s not fiddly, there aren’t excessive menus and options, and most importantly there’s no zooming in and out and trying to input notes into tiny squares. It’s better than any other iOS sequencer in this regard.
Second is the key pads for playing notes. They’re so elegantly and simply laid out. I swear iOS devs love making their apps ugly and unnecessarily unique. This is exactly how they should be laid out.
My only complaint is that if left unused it often freezes in the background and needs to be restarted. And midi note velocity going to 127 would be nice as well.
Krft devs, please don’t abandon this app, it along with AUM is the center of my iOS production setup. You’ve created something great.

hansendesigns. ,

Insta-Buy 5-star App

Addictive. Endless musical fun, no hassles. Extensive series of short videos on the KRFT website get you started (and help you decide if KRFT is for you). Use the tweak-able synths and drums inside the app or let KRFT drive your gear and/or iOS musical instruments via endless possibilities for playing/tweaking/programming of midi loops, piano rolls etc. Further instantly tweak the midi with transformations, dials, morphs etc. Do all this while syncing with Ableton LINK and constraining scales for a like-buttah smooth experience. Download the groovebox-y scenes of other users online, or share your creations. Plus more and more... love this app. I don't write too many reviews but I had to leave something here for others to possibly get an outstanding app.

KillerBananaer ,


It's 2017 and somebody finally comes up with a playable iPad/iPhone music surface thingy that doesn't require imported samples, midi, or purchased sound packs! That, and it's so versatile too. Easy to get carried away on the included tidbits alone. I keep finding myself playing the same "surface" in a quintillion different ways.
In the future:
Would like to see more FX and synth parameters. More flexibility all around is always welcome. Looking foreword for more juicy updates.


Studio Amplify Ltd
22.6 MB

Requires iOS 9.0 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6S, iPhone 6S Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, iPad Pro (12.9-inch), iPad Pro (12.9-inch) Wi-Fi + Cellular, iPad Pro (9.7‑inch), iPad Pro (9.7-inch) Wi‑Fi + Cellular, iPad (5th generation), iPad (5th generation) Wi‑Fi + Cellular, iPad Pro (12.9‑inch) (2nd generation), iPad Pro (12.9‑inch) (2nd generation) Wi‑Fi + Cellular, iPad Pro (10.5‑inch), iPad Pro (10.5-inch) Wi‑Fi + Cellular, iPad (6th generation), iPad Wi-Fi + Cellular (6th generation), iPad Pro (11-inch), iPad Pro (11-inch) Wi-Fi + Cellular, iPad Pro (12.9-inch) (3rd generation), iPad Pro (12.9-inch) (3rd generation) Wi-Fi + Cellular, iPad mini (5th generation), iPad mini (5th generation) Wi-Fi + Cellular, iPad Air (3rd generation), iPad Air (3rd generation) Wi-Fi + Cellular, iPad (7th generation), iPad (7th generation) Wi-Fi + Cellular, iPod touch (6th generation), and iPod touch (7th generation).



Age Rating
Rated 4+
© 2017 Studio Amplify


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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