Comparison

SynthBridge MIDI Synth vs Starflight DJ

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SynthBridge MIDI Synth

Transform your device into a versatile MIDI sound module and virtual piano. Load SoundFont files, connect controllers, and utilize expressive performance tools for practice, production, or live music.

Highlights
  • MIDI controller support (Bluetooth, USB, Network)
  • SoundFont (SF2/SF3) loading and playback
  • Multi-touch piano keyboard and drum pads
  • Pitch bend and modulation wheels
  • MIDI file playback and recording
  • Customizable velocity curves
Features
Read full description

Connect your MIDI keyboard, choose a sound, and play. SynthBridge turns your phone or tablet into a portable sound module and practice workspace. You can also start with the on-screen piano and drum pads. Your sounds: use the built-in library or import SF2/SF3 SoundFonts. Layer sounds and adjust their balance, effects and keyboard ranges. Your keyboard: connect compatible USB MIDI or Bluetooth MIDI devices. Control supported parameters with MIDI CC messages. Your practice: play MIDI files, follow the note visualization, and combine a metronome, loops and Style accompaniment. Your ideas: record MIDI performances, keep named drafts, preview takes and export MIDI files. MIDI files can also be converted to WAV or AAC audio. Your setup: save performance scenes and return to your sounds and playing settings. Use portrait or landscape layouts on phones and tablets. Some features and resources require in-app purchases. iOS or iPadOS 15.0 or later. USB and Bluetooth MIDI require compatible devices and accessories. https://synth.64bit.us/privacy.html https://synth.64bit.us/terms.html

About

Starflight DJ

Features
Read full description

Starflight DJ is a music player that keeps the songs of the idol unit "Starflight Girls" flowing non-stop, mixed like a club set by an automatic DJ. Watch a character VJ lip-sync along while the music never breaks. A simple player for listening to albums in order is included too. - PLAYER: albums in order In the Player tab of the Auto DJ screen, pick an album by its cover and it plays from track 1, every song in full. Songs are not overlapped: the next one starts from the top when the previous one ends. - Play an album in order or shuffle it - Play Next and Add to Queue let you slip in any song later - Reorder or remove songs in the queue - When the queue runs out, choose whether to continue with random songs or stop - Switch to the DJ tab while a song is playing and it keeps playing; the next song is mixed the DJ way - AUTO DJ: the music never stops Every bundled track is pre-analysed for BPM, beat phase and song structure (intro / chorus / outro). Auto DJ judges how well two songs fit together, matches their tempo and crossfades at the best mix point. It is a different feeling from a plain playlist: the lift of a real DJ mix just keeps going. - Pick the songs for DECK A and DECK B yourself (cover, then album, then song), or leave every choice to Auto DJ - GOOD / BAD feedback on each transition tunes the selection towards your taste - Chorus medley mode strings together just the hooks, one song after another - CHARACTER VJ: they move and sing A VJ visual follows the track that is playing, with the members of Starflight Girls lip-syncing the vocals. Beat-synced effects add to the live feel, and karaoke-style lyric captions are included. - Luna Kurohana, Ray Shitou, Layra Aone and Sophia Tsukishiro appear in DJ outfits made for this app - TIMELINE DESIGNER: your own setlist "Start chilled, build towards the end." Draw the energy curve and a setlist is generated for you. Review and edit the running order and mix points on the timeline to design the perfect one-hour mix. - DJ LIVE: ride the beat Tap in time with the track that is playing and push the members' energy higher in a time attack. A gold band and a shrinking ring show exactly when a tap counts as PERFECT, and a miss tells you how many milliseconds early or late you were. Your best score is saved. - SLEEP TIMER: fall asleep to the music Available in both the Player and DJ tabs. When time is up the music fades out and stops. - WHAT IS INCLUDED - All 30 original Starflight Girls tracks (albums 16th to 18th) - Expand the library with add-on album packs downloaded inside the app (1st to 15th, 19th to 21st and 23rd to 26th Flight and more, 247 tracks in total) - A News section in the Manage tab for announcements such as new albums - GOOD FOR - Anyone who does not want their background music to stop - Fans of DJ mixes and club music - Anyone who wants to keep their favourite character's MV running - Anyone who likes to fall asleep to music - Anyone who finds playlist shuffle a little flat Playback of the bundled tracks is fully offline. Enjoy non-stop music on your commute or on a plane.

Screenshots

SynthBridge MIDI Synth4 screens
Starflight DJ4 screens

Verdict

The call

The clearest difference is in-app purchases: Starflight DJ at none against SynthBridge MIDI Synth's 7. SynthBridge MIDI Synth's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SynthBridge MIDI Synth sells 7 in-app purchases, starting at $1.99 per month. Starflight DJ asks for nothing beyond the download.

UpkeepUpdate frequency

SynthBridge MIDI Synth ships an update every 2 weeks, Starflight DJ every 10 days. The most recent releases landed on October 25, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
SynthBridge MIDI Synth versus Starflight DJ: the parameters behind the verdict, then further details
ParameterSynthBridge MIDI SynthStarflight DJ
PriceFreeFree
Rating4.8 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 weeksEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size76 MB221 MB
Age rating+44+
Developer啟东 徐Satoshi Kobayashi

In-app purchases

7 purchases

SynthBridge MIDI Synth

Subscriptions2
  • Cloud Monthly7 Days trial$1.991 Month
  • Cloud Yearly7 Days trial$12.991 Year
One-time5
  • Supporter Tip$0.99
  • Remove Ads$1.99
  • Supporter Plus$4.99
Show 2 more
  • SynthBridge Pro$4.99
  • Supporter Patron$9.99
None

Starflight DJ

No in-app purchases

Questions

Is SynthBridge MIDI Synth free?
SynthBridge MIDI Synth is free to download, with in-app purchases available.
Is Starflight DJ free?
Starflight DJ is free to download, with no in-app purchases.
Do SynthBridge MIDI Synth or Starflight DJ have ads?
Neither SynthBridge MIDI Synth nor Starflight DJ shows ads.
Which is updated more often, SynthBridge MIDI Synth or Starflight DJ?
SynthBridge MIDI Synth ships an update every 2 weeks, and Starflight DJ every 10 days. Most recently, SynthBridge MIDI Synth was updated on October 25, 2026 and Starflight DJ on November 5, 2026.

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