Pocket Organ C3B3 vs VB3m
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pocket Organ C3B3
This app simulates a Hammond Organ with realistic sound generation and a rotary speaker effect. It offers dual keyboards, customizable scales, and various effects like overdrive and reverb. Users can save custom settings and explore factory presets for different genres.
- Virtual Tonewheel System sound generation
- Rotary speaker effect (Fast, Slow, Off)
- Dual 5-octave keyboards
- Customizable keyboard scales
- Harmonic Percussion and Keyclick effects
- Overdrive and Reverb effects
- Accelerometer-controlled effects
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Pocket Organ C3B3 is a musical keyboard application for iPad/iPhone/iPod touch that simulates the Hammond Organ. The sound is generated with the synthesis of the waveforms from "Virtual Tonewheel System" controlled by 9 drawbars like the actual Hammond Organ. You will be surprised at the real sound generated from this App! Pocket Organ C3B3 is a Hammond Organ in your pocket or bag Pocket Organ C3B3 has a rotary speaker effect like the Leslie speaker, which adds amazing realistic character and spatial depth on your organ playing. This effect can be changed to Fast (Tremolo), Slow (Chorale), or even Off (brakes). Visit our website to listen to the realistic and authentic sound! Features: - Authentic emulated sounds generated from "Virtual Tonewheel System" mixed by sliding 9 drawbars - 61key + 61key, 5-octave Dual Keyboards with switchable key width - Scrollable Keyboard that can be configured to your own octave key range on screen with 4 preset buttons - Key transpose function (You can play a music of any key in the key of C) - You can select the Keyboard scale of normal, minor Pentatonic, major Pentatonic, minor Blues, major Blues - Rotary Speaker effect can be changed to Fast (Tremolo), Slow (Chorale), or even Off (brakes). - Harmonic Percussion effect with adjustable decay, 2nd and 3rd harmonic - Keyclick noise effect - Built-in Reverb that simulates spring reverb - Overdrive effects - Scanner vibrato & chorus - Shake your iPad/iPhone to play spring shock (reverb crash) effect like Jon Lord (keyboard player of Deep Purple) or Keith Emerson (a member of the Emerson, Lake & Palmer, ELP). - iPhone's built-in accelerometer gives you amazing glissando effect control. - 20 Factory Presets containing typical settings used by Rock, Jazz or Gospel Sounds - You can add the User Memory Bank that allows you to store your own 20 patches (drawbars & effects settings) & Preset Packages with In App Purchase. - Pocket Organ C3B3 is programmed by Shinya Kasatani, the creator of best selling iPhone App "PocketGuitar" and is designed by Junichiro Yamasaki of "Super Manetron".
VB3m
This app is a virtual tonewheel organ emulator, meticulously recreating the sound and functionality of the classic Hammond B3. It offers advanced features like dual manuals, pedalboard, physical modeling, and a versatile rotary speaker effect, all controllable via MIDI.
- Dual manuals and pedalboard
- Physical modeling engine
- Rotary speaker effect
- Tube overdrive simulation
- MIDI CC mapping
- AUv3 plugin support
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GSi VB3m simulates the famous american tonewheel organ better known as the Hammond Organ B3. Main features: - Two manuals plus pedalboard - Two sets of 9 drawbars each for upper and lower manual - Two drawbars for the pedalboard - Physical modeling engine with full polyphony (91 tonewheels) - Rotary speaker effect with two variations plus one static amp - Virtual microphone positioning - Tube overdrive simulation - Two band equalizer - Digital reverb - Program bank with 32 memory locations - On screen keyboard (upper manual only) - Split function - Pedal-to-lower function - Pedal String Bass decay - Global tuning between A=430 Hz and A=450 Hz - Fully customizable Midi CC Mapping with Midi Learn function - Reverse all drawbar CC option - Sustain pedal support for sustaining notes - User selectable Midi channels - Freely assignable Program Change numbers - Low latency Core Audio support - IAA support - AUv3 plugin extension included - Background audio option - Free Cloud service to easily exchange Programs and Midi Maps Please note: to connect a USB-Midi controller, please use Apple's Camera Connection Kit (Lightning to USB-A). Don't connect your recharge cable to a USB host port, that won't transfer Midi data. For better performance, make sure your battery is fully charged or power your device wherever possible. For more details, please read this Q&A article: https://lnx.gsidsp.com/help/knowledgebase.php?article=1
Screenshots
Verdict
The clearest difference is price: Pocket Organ C3B3 at $0.99 against VB3m's $14.99. Pocket Organ C3B3 also leads on iOS requirement (7.0 vs 12.0). VB3m's advantage is in-app purchases (none vs 7) and update cadence (fortnightly vs every 4 months). On ratings volume, 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
Pocket Organ C3B3 costs $0.99 and VB3m $14.99 up front. Pocket Organ C3B3 sells 7 one-off in-app purchases. VB3m asks for nothing beyond the download.
VB3m holds the better App Store score, 4.4 against 4.1. Both are backed by a comparable volume of ratings — 14 and 41 respectively. Written reviews point the same way: 65% of Pocket Organ C3B3's written reviews are positive against 78% of VB3m's.
Pocket Organ C3B3 ships an update every 4 months, VB3m fortnightly. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.
| Parameter | Pocket Organ C3B3 | VB3m |
|---|---|---|
| Price | $0.99 — better | $14.99 |
| Rating | 4.1 (14 ratings) | 4.4 (41 ratings) — better |
| Positive reviews | 64.6% of reviews | 78.0% of reviews — better |
| Number of ratings | 14 | 41 — better |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 7.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 31 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | insideout ltd. | Genuine Soundware |
Customer experience
Pocket Organ C3B3
VB3m
User reviews
Pocket Organ C3B3
From 14 App Store ratingsWhat we love
- 🎹 Authentic Hammond B3 organ sound quality
- 💰 Affordable price point for professional-grade instrument
- 🎛️ Comprehensive drawbar and control customization
- 🎵 Excellent Leslie rotary speaker effect (slow setting)
- ⌨️ Low latency MIDI keyboard support
Room to improve
- 🐛 Duplicate note issues on certain keys
- 🐛 Notes occasionally stick and don't release
- ⚠️ Fast Leslie speed sounds unrealistic and too fast
- ⚠️ Lack of app updates and maintenance
- ⚠️ Poor inter-app audio support (Audiobus, background audio)
VB3m
From 41 App Store ratingsWhat we love
- 🎶 Authentic organ sound
- ✨ Excellent sound quality
- 💻 Great for live performances
- 💡 Incredible value for price
- 🚀 Fast and stable performance
Room to improve
- 🐛 Graphics are pixelated/blurry
- 🔋 High battery drain
- 🐞 Sound gets stuck
- 🔌 Issues with GarageBand integration
- 📉 Not as good as dedicated hardware
Bugs and requests
Pocket Organ C3B3
Reported bugs
16 issues- Duplicate notes on same keys (E/F, A/Ab/B)
- Notes stick and don't release properly
- Crashes when playing multiple notes simultaneously
- Audiobus initialization failure
- Inter-app audio compatibility issues
Show 11 moreShow fewer
- MIDI channel receives all channels instead of specific ones
- Preset packs fail to load correctly
- App stops functioning when another app is opened
- Swell pedal doesn't work with external keyboards
- iRig Keys PRO register/octave repetition issue
- iOS 8+ compatibility problems
- App crashes on iPad 2 and older devices
- Four-finger swipe gesture causes keyboard malfunction
- Latency issues when playing multiple keys
- Reverb crash volume too loud and non-adjustable
- App goes to sleep while playing via MIDI
Requested features
18 requests- Adjustable Leslie speed control (slow/fast customization)
- Expression/sustain pedal MIDI support
- Bluetooth pedal control for Leslie speed switching
- Background audio playback when app is minimized
- Audiobus and inter-app audio support
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- Swell pedal MIDI control
- Configurable MIDI channel selection per manual
- Recording and playback functionality
- Retina display support
- Resizable keyboard with adjustable key width
- Screen rotation support
- Full Leslie bypass option
- Tonewheel leakage control for authentic 60s sounds
- Separate percussion control for upper/lower manuals
- MIDI data transmission (not just receive)
- Mod wheel and pitch wheel assignments
- Hide on-screen keyboards for MIDI-only use
- Unified control view (drawbars, percussion, vibrato together)
VB3m
Reported bugs
14 issues- Sound gets stuck
- Non funziona più (stops working)
- Non riesco più a sentire il suono (no sound after iPad update)
- Sounds get stuck, developer not responding
- UI is pixelated and needs a refresh
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- Graphics are very low res (needs fixing!)
- Blurry graphics on iPad Pro 12”
- Problems recording with GarageBand iOS
- Difficulty connecting with MIDI keyboard and audio interface on iPad 9th gen
- App screen goes dark and no sound when connected to MIDI/audio interface
- Minor bug: sometimes the app seems to lose track of the (swell) expression pedal
- Problema GarageBand: not working as Audio Unit with native GarageBand keyboard
- Latency issues on older iPhone models
- Battery drains when in background
Requested features
30 requests- Add parametric EQ
- Adjustable sustain
- Adjustable Leslie transition speed
- Save drawbar registrations
- Reverse color keys for quick access
Show 25 moreShow fewer
- Toggle setting for rotary control
- Increase UI size
- Add sustain pedal triggers bass note
- Add percussion volume control
- Add black keys to keyboard view
- Add up/down selector buttons for presets
- Option to save parameters globally or per preset
- Add MIDI learn
- Clean setting on drive knob
- Leslie speed switch on organ page
- More presets
- Integrate half moon Leslie directly on organ screen
- Add mute function for use with other apps
- Option to decide buffer size
- Transpose +2 octaves for lower split
- More Leslie tweaks (speed, ramp-up times, amp models)
- Add reverse color keys to keyboard page
- Allow rotary control to have 'toggle' setting
- Increase UI size
- Add user saved presets
- Add MIDI learn
- Clean setting on drive knob
- Leslie speed switch on organ page
- More presets
- Expression pedal mapping improvement
In-app purchases
Pocket Organ C3B3
- User Memory Bank$0.99
- Progressive Rock Pack$0.99
- Hard Rock Pack$0.99
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- Super Rock Selection$0.99
- Great Rock Selection$0.99
- Reggae & Psychedelic Pack$0.99
- Jazz & Gospel Pack$0.99
VB3m
No in-app purchases







