Core Synth HD vs Pegboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Core Synth HD
Create music with a powerful monophonic synthesizer for iPad. Explore dual oscillators, customizable filters, and an arpeggiator. Save your custom sounds and enhance your live performances with intuitive controls.
- Dual overlapping oscillators
- Four wave patterns
- Low Pass Filter with ADSR
- Volume Envelope Shaper (ADSR)
- Arpeggiator with multiple modes
- Save unlimited patches
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Top free iPad music app in 5 countries, top 10 in more than 50! Get your groove on with Core Synth HD, the definitive monophonic synthesizer for the iPad. With tons of features packed into a small package, Core Synth is great for live performing. A Pitch Wheel replicates perfectly the real thing! This free app has the following features: - Pitch Wheel - 2 Octave keyboard - Keys light up in different colors when pressed Oscillator Module - Dual overlapping oscillators - Four wave patterns: Square, Triangle, Sawtooth and Reverse Sawtooth * Select from 5 octaves * Adjust glide between notes * Fine tune Oscillator 2 with option to sync with Oscillator 1 Volume Envelope Shaper - Edit ADSR (Attack, Decay, Sustain, Release) Low Pass Filter Module - Adjust Cutoff and Resonance - Edit ADSR (Attack, Decay, Sustain, Release) Upgrade to the full version within the app for the following additional features: - 7 Octave Keyboard - Octave control to move along entire range - Modulation Wheel Patches Module - Save an unlimited number of individually named patches - Browse through your collection before applying patch - Delete unwanted patches Modulation Module - Four wave patterns: Square, Triangle, Sawtooth and Reverse Sawtooth - Modulate Filter, Pitch or Wave - Adjust LFO Rate and amount Arpeggiator Module - Arpeggio moves up to 5 octaves - Four step modes: Up, Down, Up/Down, Random - Adjust rate Many more exciting enhancements to follow! Core Synth HD includes open source code from MobileSynth developed by Allen Porter.
Pegboard
This app offers an intuitive mobile wavetable synthesizer with a virtual analog filter. It features a harmonic table keyboard layout that highlights scales for easy improvisation and chord playing. The free version provides extensive sound design capabilities, while a pro upgrade unlocks MIDI controller functionality.
- Harmonic table keyboard layout
- Scale highlighting for improvisation
- Virtual analog filter
- 8-voice polyphony
- 7 effect modules
- 16-row modulation matrix
- MIDI over USB (Pro)
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Pegboard is a mobile synth designed to make playing music more intuitive. The app is a full-featured mobile subtractive synthesizer with a virtual analog filter. Use it as a melody writing app, music scale finder, or just as a MIDI keyboard controller. How you use it is completely up to you. The keyboard is arranged in a harmonic table layout. Scales you choose are highlighted for easy improvisation. Each chord has a simple shape that is the same in every key. This layout greatly simplifies playing chords, borrowing chords, and modulating between keys. Music theory apps tend to impose constraints and can be uninspiring. Pegboard will give you an intuitive feel for harmony and allow you to come up with your own amazing riffs all through improvisation. Most of the app features are free. The synth is fully playable and programmable in the free version. Included in the free version: • Over 400 unique scales. • 70 factory presets. • 16-voice polyphony. • 4 oscillators. • 7 effect modules. • 16-row modulation matrix. • Unlimited use, no ads. Included in the pro version: • Unlimited saved presets. • MIDI over USB. The pro version is available as an in-app purchase. It will allow you to use the app as a MIDI controller. You can then connect the app to your DAW or another synthesizer.
Screenshots
Verdict
The clearest difference is rating: Pegboard at 4.4 against Core Synth HD's 3.4. Pegboard also leads on update cadence (weekly vs every 4 months) and review sentiment (56% vs 31%). Core Synth HD's advantage is iOS requirement (8.0 vs 15.0). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Core Synth HD sells 1 one-off in-app purchase and Pegboard sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Pegboard holds the better App Store score, 4.4 against 3.4. Both are backed by a comparable volume of ratings — 5 and 10 respectively. Written reviews point the same way: 31% of Core Synth HD's written reviews are positive against 56% of Pegboard's.
Core Synth HD ships an update every 4 months, Pegboard weekly. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.
| Parameter | Core Synth HD | Pegboard |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (5 ratings) | 4.4 (10 ratings) — better |
| Positive reviews | 30.6% of reviews | 55.6% of reviews — better |
| Number of ratings | 5 | 10 — better |
| Update frequency | Every 4 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 10 MB | 111 MB |
| Age rating | 4+ | 4+ |
| Developer | Core Engine Apps | Brandon Murray |
Customer experience
Core Synth HD
Pegboard
Bugs and requests
Core Synth HD
Reported bugs
21 issues- No sound on iPad Pro
- No sound on iOS 12
- No sound since last update
- Program doesn't start after update
- Ad blocks view
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- App crashes on load
- App crashed frequently
- Rarely produced sound
- Annoying clicking noise when playing a note
- Stopped playing notes after a while
- App reset to free module after purchase
- Lost saved presets after update
- CS doesn't work after iOS6 update
- Sound quit working suddenly
- No sound after purchase
- No audio on iPad 2
- Keyboard stops making noise after playing
- Crashes on every load
- Clipping pops and clicks
- Audible clicks between notes
- Constant click with the sounds
Requested features
17 requests- Add MIDI support
- Add Audiobus support
- Add recording with copy/paste
- Add sine wave for sub basses
- Add polyphony option
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- Add tempo sync delay, flange, chorus
- Add bit reduction
- Fix modulation clipping
- Fix clicking/popping sounds
- Add manual
- Add more presets
- Add noise generator
- Add detuning on both oscillators
- Add ability to map LFO to mod wheel
- Add switch to turn arpeggiator on/off
- Add Core Midi and MIDI over wifi support
- Fix Osc Octave Text numbering
Pegboard
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Core Synth HD
- Full Version Upgrade$1.99
Pegboard
- Pegboard Pro$19.99









