Comparison

SynthBridge MIDI Synth vs SpolaSong

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

SpolaSong

Features
Read full description

SpolaSong turns your iPhone or iPad into a versatile musical instrument for playing, rehearsing and performing. Play directly from the on-screen keyboard, combine sounds, adjust effects and organize your songs into setlists so everything you need is ready for rehearsals and live performances. KEY FEATURES • On-screen keyboard for playing directly on your device • Up to 4 simultaneous parts/sounds • Volume, pan, reverb and EQ controls • Chorus and Delay effects • Tonal Pad for sustained notes and harmonic layers • Split, tuning, octave and velocity controls • Setlists with songs and sections such as Intro, Verse, Chorus and Solo • Stage Mode with large, simple controls for live performance • Import SoundFonts in .sf2 format • External MIDI support on compatible devices • MIDI Learn for mapping your keyboard controls • Optimized interface for iPhone and iPad • Available in Portuguese, English and Spanish SpolaSong does not require an external MIDI keyboard. You can play directly on the on-screen keys and explore the app using only your iPhone or iPad. Some sounds are downloaded from the internet the first time they are used. Once loaded, they are available for use within the app. Whether you are practicing, rehearsing or performing live, SpolaSong brings instruments, controls, effects, setlists and Stage Mode together in one interface.

Screenshots

SynthBridge MIDI Synth4 screens
SpolaSong3 screens

Verdict

The call

The clearest difference is in-app purchases: SpolaSong at none against SynthBridge MIDI Synth's 7. SpolaSong also leads on update cadence (every 3 days vs every 11 days). On price, ads, device support and iOS requirement 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. SpolaSong asks for nothing beyond the download.

UpkeepUpdate frequency

SynthBridge MIDI Synth ships an update every 11 days, SpolaSong every 3 days. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 8 level
SynthBridge MIDI Synth versus SpolaSong: the parameters behind the verdict, then further details
ParameterSynthBridge MIDI SynthSpolaSong
PriceFreeFree
Rating4.7 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 11 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size76 MB392 MB
Age rating4+4+
Developer啟东 徐R.R. PROCESSAMENTO DE DADOS E SERVIÇOS SS LTDA

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

SpolaSong

No in-app purchases

Questions

Is SynthBridge MIDI Synth free?
SynthBridge MIDI Synth is free to download, with in-app purchases available.
Is SpolaSong free?
SpolaSong is free to download, with no in-app purchases.
Do SynthBridge MIDI Synth or SpolaSong have ads?
Neither SynthBridge MIDI Synth nor SpolaSong shows ads.
Which is updated more often, SynthBridge MIDI Synth or SpolaSong?
SynthBridge MIDI Synth ships an update every 11 days, and SpolaSong every 3 days. Most recently, SynthBridge MIDI Synth was updated on October 13, 2026 and SpolaSong on October 9, 2026.

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