Comparison

SynthBridge MIDI Synth vs Hi Organ

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 portable sound module and practice space. Connect a MIDI keyboard or use the on-screen controls to play with a vast sound library, layer instruments, and apply effects. Record performances, practice with loops and metronomes, and export your creations.

Highlights
  • MIDI keyboard connectivity
  • SoundFont (SF2/SF3) import
  • Layered sound design
  • MIDI CC parameter control
  • MIDI file playback and recording
  • Metronome and loop functionality
  • Performance scene saving
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

Hi Organ

Features
Read full description

Hi Organ turns your iPhone or iPad into a real arranger keyboard - the kind of instrument where you hold a chord with your left hand and a complete backing band plays along with you. WHY HI ORGAN Most keyboard apps give you a piano and stop there. Hi Organ gives you the whole instrument: four keyboard parts, an auto-accompaniment engine with eight independent tracks, a mixer, effects, drum pads, and recording. Everything you would expect from a hardware arranger is brought together in one app, with controls arranged in a familiar, performance-focused layout. Hi Organ is also designed to feel at home on the latest Apple devices. On iOS 26 and later, the app features a dedicated Liquid Glass interface with translucent panels, layered depth, soft reflections, dynamic highlights, and responsive glass-style controls. The result is a cleaner, more immersive workspace that keeps important performance controls easy to see while giving the instrument a distinctly modern iOS look. Whether you are practicing, arranging, performing, or simply exploring new sounds, Hi Organ combines the depth of a full arranger keyboard with a visual experience built for the newest generation of iOS. THE KEYBOARD - Full 88-key range with smooth scrolling and zoom - Adjustable split point: left hand plays chords, right hand plays the melody - Three upper layers plus a lower part, each with its own voice, volume, octave and pan - Multi-touch with glissando, and velocity that follows where your finger lands - Note names as letters, solfege or numbers - or hidden AUTO-ACCOMPANIMENT - Eight tracks: drums, percussion, bass and five accompaniment parts - Intro, four variations, fills, break and endings - exactly like the hardware - Start/Stop, Synchro Start, Synchro Stop, Tap Tempo, Fade In/Out, Auto Fill - Chord recognition covering major, minor, sevenths, sus, diminished, augmented, slash chords and more - The accompaniment follows your chord in real time YOUR OWN STYLES - Import style files (.sty, .pst, .bcs) with full CASM support, so chord transposition follows the rules the style was authored with - Import standard MIDI files and map the tracks yourself - Bring files in from the Files app SOUNDS AND CONTROL - 128 General MIDI voices plus drum kits - Nine-fader mixer for keyboard parts and accompaniment tracks - Reverb, chorus, filter cutoff and resonance, ADSR envelope, portamento, shake and repeat - Sixteen drum pads and four assignable phrase pads - Metronome, transpose, octave shift, tempo lock - Four keyboard sets to store and recall your whole setup RECORD AND SHARE Record what you play, listen back, then export it as an audio file or as MIDI to keep working on it elsewhere. PREMIUM Hi Organ is free to play. A single one-time purchase - no subscription - unlocks unlimited style imports, all 128 voices and drum kits, recording and export, the advanced effects section, and removes ads. Buy once, keep it forever, on every device signed in to your Apple ID. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

SynthBridge MIDI Synth4 screens
Hi Organ4 screens

Verdict

The call

The clearest difference is ads: SynthBridge MIDI Synth at none against Hi Organ's shown. Hi Organ's advantage is update cadence (every 5 days vs fortnightly). On price, in-app purchases, 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 and Hi Organ sells 4 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SynthBridge MIDI Synth ships an update fortnightly, Hi Organ every 5 days. The most recent releases landed on November 11, 2026 and November 10, 2026 respectively.

Scorecard2 real differences · 8 level
SynthBridge MIDI Synth versus Hi Organ: the parameters behind the verdict, then further details
ParameterSynthBridge MIDI SynthHi Organ
PriceFreeFree
Rating4.8 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyFortnightlyEvery 5 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size76 MB155 MB
Age rating4+4+
Developer啟东 徐Nguyen Hieu

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
4 purchases

Hi Organ

Subscriptions3
  • Weekly Premium$0.997 Days
  • Monthly Premium$1.991 Month
  • Yearly Premium$4.991 Year
One-time1
  • Premium Lifetime$5.99

Questions

Is SynthBridge MIDI Synth free?
SynthBridge MIDI Synth is free to download, with in-app purchases available.
Is Hi Organ free?
Hi Organ is free to download, with in-app purchases available.
Do SynthBridge MIDI Synth or Hi Organ have ads?
Hi Organ shows ads; SynthBridge MIDI Synth does not.
Which is updated more often, SynthBridge MIDI Synth or Hi Organ?
SynthBridge MIDI Synth ships an update fortnightly, and Hi Organ every 5 days. Most recently, SynthBridge MIDI Synth was updated on November 11, 2026 and Hi Organ on November 10, 2026.

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