Best 4 alternatives: apps like 4-pad sampler

7+ similar apps compared and reviewed

4.3 avg rating

5 free apps

Updated October 2026

4-pad sampler

eiki yonemoto

🔧 Utilities

🎵 Music

4 is great, but it's not the only option. Explore 7+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to 4

Polychord: Chord Instrument by Apposite

Songwriting pads, AUv3 MIDI

Editor's Choice

🎵 Music

4.4😐(39 ratings)

$9.99

Polychord: Chord Instrument screenshot 1

Polychord: Chord Instrument screenshot 2

Polychord: Chord Instrument screenshot 3

Polychord: Chord Instrument screenshot 4

Polychord: Chord Instrument screenshot 5

Polychord: Chord Instrument screenshot 6

Create music with an intuitive interface that makes playing chords easy for everyone. Explore songwriting, strum and solo with confidence, and even add auto-accompaniment. Advanced MIDI features allow integration with popular music production software.

What We Love

🎵 Intuitive chord progression interface
🎹 Excellent MIDI controller functionality
🎸 Digital Omnichord replacement
📱 Audiobus integration support
🎼 Great for music theory learning
✨ Beautiful and elegant UI design
🔊 Warm, vintage synth sounds
🎯 Easy to use for beginners and professionals
⚡ Low latency MIDI over WiFi
🎨 Customizable sound parameters (ADSR, filters)

Room to Improve

⚠️ App no longer actively developed
🐛 Frequent crashes and stability issues
📦 Limited built-in sound variety
🔄 Compatibility issues with newer iOS versions
🎚️ Limited chord selection at once (3x3 grid)
🔊 Low maximum volume output
⏱️ Occasional latency and lag issues
🎛️ Minimal customization options
🚫 MIDI implementation has bugs
💰 Expensive for feature set ($9.99-$10)

OB-Xd AUv3 Synth by DiscoDSP LLC

Oberheim OB-X based synth

Strong Contender

🎵 Music

4.3😐(64 ratings)

$14.99

This app emulates the classic Oberheim OB-X synthesizer, offering its rich sound and behavior with added enhancements. It focuses on sonic quality and includes micro random detuning for authentic analog warmth. External effects are recommended to further shape its versatile soundscapes.

What We Love

🎶 Incredible sound quality
✨ Inspiring creative tool
🎹 Faithful emulation of classic synth
🎛️ Great for programming
🎚️ Useful presets
💡 Lightweight AUv3
🚀 Fast performance
💰 Good value

Room to Improve

🐛 Unusable UI on older devices
💻 Poor GUI scaling on iPad Pro
🎛️ Controls unresponsive or misaligned
📉 Limited functionality without updates
🤷‍♂️ No clear upgrade path
💸 Denied refunds
🚫 Developer unhelpful with upgrades

Piano Partner 2 by Roland Corporation

Worth Considering

🎵 Music

2.2😞(230 ratings)

Free

Enhance your Roland digital piano experience with interactive learning tools. Practice with intelligent accompaniment, develop skills through engaging games, and track your progress with recording and diary features. Control your piano remotely for easier operation.

What We Love

👍 Expands features of Roland pianos
🚀 Enables easy changes to voices, reverb, transpose, etc.
💡 Provides access to additional sounds
👍 Functional app when it works

Room to Improve

🐛 Frequent crashes and connection issues
👎 Outdated and unintuitive user interface
👎 Unreliable Bluetooth connectivity
👎 Limited functionality compared to expectations
👎 Incompatible with newer Roland piano models

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sakanaction

by Fanplus, Inc.

Free

Stay updated with the latest news and information from the Japanese artist "sakanaction". This official smartphone app provides real-time access to all their announcements and updates, ensuring you never miss a beat.

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Fender Tune: Guitar Tuner App

Chords, Scales and Metronome

Free

This app offers precision tuning for guitar, bass, and ukulele with multiple modes and customizable options. It also provides a comprehensive suite of practice tools, including chord and scale libraries, and metronome functionality.

Precision auto-tune modeManual and chromatic tuning26 alternate and custom tunings

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free with in-app purchases

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Podcasts Music Radio FM: Podio

Live Sport News AM Station App

Free

Access a vast library of live FM radio stations and millions of podcast episodes from around the world. Discover content across numerous categories, create playlists, and enjoy features like an alarm clock and sleep timer.

Discover 72,000+ radio stationsAccess 130 million+ podcast episodesSearch by country, language, or genre

🎵 Music

(64)

free with in-app purchases

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AudioKit Synth One Synthesizer

Feature-packed Pro Synthesizer

Free

This is a free, open-source professional synthesizer app for iOS devices. It offers over 300 presets, MIDI support, a sequencer, and vintage-inspired filters. Learn music production basics and create your own sounds.

Over 300+ PresetsMIDI SupportVintage-Style Sequencer