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Starflight DJ

A nonstop auto-DJ music player with character VJ visuals

Starflight DJ is an iOS music player that keeps songs by the idol unit "Starflight Girls" flowing nonstop, mixed by an auto DJ like a club set. Thirty tracks ship with pre-analyzed BPM, beat phase, and song structure, and lip-synced character VJ visuals sing along as the music plays.

Starflight DJ auto-DJ playback screen on iPhone
Starflight DJ auto-DJ playback screen on iPad

An Auto-DJ Experience That Never Stops

Every included track is pre-analyzed for BPM, beat phase, and structure. The auto DJ picks compatible songs and crossfades them at the best mix points with matched tempo. Core features work fully offline, with no ads and no in-app purchases.

Auto DJ that crossfades at optimal mix points
GOOD / BAD feedback that adapts mixes to your taste
Setlists designed from an energy curve
Character VJ visuals in 12 styles, including outfit variants
Timeline view to review and edit song order and transitions
Thirty Starflight Girls tracks included
Expandable library via add-on packages (.sfgpkg)
Offline playback, no ads, no in-app purchases

How to Use

1

Start playback on the Auto DJ tab and the included tracks mix nonstop. Rate each transition with GOOD or BAD.

2

Open the VJ tab to watch character VJ visuals lip-sync along with the current song.

3

On the Timeline tab, generate a setlist from an energy curve and edit song order and mix points.

4

On the Manage tab, download or import add-on album packages (.sfgpkg) to expand your library.

Starflight DJ auto-DJ playback screen on iPhone
Starflight DJ song library screen on iPhone
Starflight DJ package management screen on iPhone

Support

Thank you for using Starflight DJ. For bug reports, questions, or support requests, please contact us at the email address below.

Support email

gakushijob@gmail.com

iOS

Bundle ID: com.gakushiai.starflightdj

Version: 1.0

Please include the following when contacting support
  • App name: Starflight DJ
  • App version
  • iOS version
  • Device model
  • Screen where the issue occurred (Auto DJ, VJ, Timeline, Songs, Manage)
  • Description of the issue
  • Steps to reproduce the issue

Frequently Asked Questions

Do I need an internet connection?

Core features — playing, mixing, and VJ visuals for the included tracks — work fully offline. The app connects to the internet only when you fetch the catalog or download add-on album packages (.sfgpkg) from the Manage screen.

What are add-on packages (.sfgpkg)?

Album packages that add more songs to your library. Download them from the list on the Manage screen, or import .sfgpkg files obtained from the official site via the Files app. All packages are free.

Do I need an account or login?

No. You can start using the app as soon as you launch it.

Are there ads or in-app purchases?

No. The app and all add-on packages are completely free with no ads, and no purchase restore is needed.

Where are my GOOD / BAD ratings stored?

Mix-preference learning data is stored only on your device. It is never sent to external servers.

What happens to my data if I delete the app?

Deleting the app removes downloaded packages, preference data, and settings from your device. They cannot be restored, though packages can be downloaded again.