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Photon AU

Photon AU

AU Midi Recorder

19 ratings
11 reviews
🎬 Entertainment
🎵 Music

Archived App (Last seen on 5 Jul 2026)

This is an archived listing of the app previously available on the App Store.

Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.

Details

  • Released
  • Updated
  • February 16, 2019
  • March 24, 2019

Developer

anthony saunders
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⭐11
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❓8 answered
FAQ↘︎
📦w/o updates
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About

Record MIDI performances with this AUv3 MIDI app, saving them as standard MIDI files. Load MIDI files via Airdrop and play back up to six pads with variations. Conform MIDI timing and velocity to groove patterns.

✓Record MIDI performances
✓Save/export as MIDI files
✓Load MIDI files via Airdrop
✓Up to six pad playback
✓Groove file for timing/velocity
✓AU Parameters automation
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What's New in Photon AU

1.01

March 24, 2019

. increased number of pads from 4 to 6 . reworked UI to move files & settings to pop-out panel . UI control method updownleftright sensitivity issues. Moved this to Settings panel . Clear button (internal buffer) resets length of empty buffer to 4 beats . reworked to fix saving of empty file issue(pad copy to buffer then save) . reworked lengths to offer integer roundups to better fit clip beats . Fixed midi file import with spaces not showing in standalone app list (even though they are imported and seen in AU) . load multi-track sequence now allows user to chose track with option to round length up to integer values . fixes to Quantise . Quantise now includes triplet (x0.3333) & Dotted (x1.5) values on 1/1 to 1/64 range in (1/n,1/nD,1/nT) order . Step Rec AdvanceBy & Duration now includes triplet (x0.3333) & Dotted (x1.5) values on 1/64 to 1/1 range in real duration order (low to high) . trim now updates display (4 bars is always minimum shown) correctly - it trims start & end and allows round up of length . locked 48k ipad pro 2018 catered for in recording/playback . Updated manual

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User reviews

Most RecentHighest RatedLowest Rated

I just wanted to play a MIDI file

This can probably do what I want, but I'm dammed if I can work out how. Dreadful UI. Support only on Facebook where I don't have an account. Sadly, Apple refused refund.
MikeTheMagnificentMikeTheMagnificent

Fantastic if a little frustrating

This is an incredibly useful tool but dancing through raindrops to start playing in sync with the host is a bit tiresome. The transport controls really need to be linked to the hosts, this seems quite an oversight in an AUv3 application.
DomAbelDomAbel

No Airdrop!

I just purchased this expressly be able to play my previously built midi files via AUM and/or AudioBus. I followed your instructions to download a file via an email attachment. Numerous other apps I have were able to successfully load the file. However, Photon AU was not among those available for download. I will update my review upon successful resolution to this issue.

Please respond here, because I do Not do Facebook.

Thanks!
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Duke JohnsonDuke Johnson

Unable to import MIDI files into Photon

Unable to import MIDI files into Photon , fix please!
wefwrgerwefwrger

Just purchased ....... Wow

Learning curve easy. Exactly what I was looking for.
reathpdreathpd
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FAQ

What is Photon AU?

Photon AU is an Audio Unit (AUv3) MIDI app for iPad that allows you to record MIDI performances, load and play MIDI files, and apply groove quantizing to your tracks. It requires a host app like AUM or Cubasis to function.

How much does Photon AU cost?

Photon AU is a paid app, priced at $3.99. There are no in-app purchases or advertisements associated with this application.

What devices does Photon AU support?

Photon AU is currently supported on iPads. An iPhone version is planned for release in the future.

Can I use Photon AU offline?

Yes, Photon AU can be used offline for recording and playback of MIDI data. However, you will need a compatible host app installed on your iPad to utilize its AUv3 functionality.

How often is Photon AU updated?

Photon AU was last updated on March 24, 2019, with version 1.01. The initial release date was February 16, 2019. Update frequency information beyond this is not provided.

What is the age rating for Photon AU?

Photon AU has an age rating of 4+, making it suitable for users of all ages. This rating is based on general content appropriateness.

Where can I find the manual for Photon AU?

A comprehensive 29-page manual for Photon AU is available online at http://amssoftware.org/manual/PhotonManual.pdf. This manual provides detailed instructions on all features and functionalities.

What makes Photon AU unique?

Photon AU stands out with its ability to load MIDI files as 'Groove files' to quantize timing and velocity, and its support for up to six pads with playback variations. It also offers automation of most controls as AU Parameters.