Best Online Sequencer Apps

248+ iOS apps curated and reviewed

4.2 avg rating
9 free apps
Updated September 2026

If you already know Helio Sequencer, this is the deeper bench. 248+ online sequencer apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of September 2026.

Compare top Online Sequencer Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Helio SequencerHelio SequencerFree4.4★ (13)NoNoSep 2026
2SAND: Audio MIDI SequencerSAND: Audio MIDI SequencerFree was $9.994.6★ (86)NoYesSep 2026
3MedlyMedlyFree4.6★ (38K)NoYesSep 2026
4Auxy StudioAuxy StudioFree4.5★ (4.3K)NoYesSep 2026
5Music Studio LiteMusic Studio LiteFree3.9★ (277)NoNoSep 2026
6RS-1 SequencerRS-1 Sequencer$5.99NoNoJun 2026
7Wurlygig – Euclidean sequencerWurlygig – Euclidean sequencerFree3.0★ (2)NoYesMay 2026
8FretMachine - Guitar SequencerFretMachine - Guitar SequencerFree5.0★ (1)NoYesAug 2026

Top Picks for Online Sequencer

SAND: Audio MIDI Sequencer#2

SAND: Audio MIDI Sequencer by Matteo Caldari

Record & Make Music, Host AUv3
Strong Contender
🎵 Music
4.6😊(86 ratings)
FreeIn-App Purchases
SAND: Audio MIDI Sequencer screenshot 1
SAND: Audio MIDI Sequencer screenshot 2
SAND: Audio MIDI Sequencer screenshot 3
SAND: Audio MIDI Sequencer screenshot 4
SAND: Audio MIDI Sequencer screenshot 5
SAND: Audio MIDI Sequencer screenshot 6

This app is a grid-based music sequencer that allows users to create compositions using AUv3 plugins and external MIDI devices. It offers extensive tools for arranging clips, editing notes, automating parameters, and routing MIDI.

What We Love

  • 👍 Great UI and features
  • 💡 Potential for music creation
  • 🚀 Fast and creative workflow
  • 👍 Easy to use, no instructions needed
  • 💡 Most usable studio on small screen
  • 👍 Simple yet feature-filled
  • 👍 Excellent developer understanding of workflow
  • 👍 Great on phone
  • 👍 Brilliant concept
  • 👍 Dope and simple
  • 👍 Solid experimental clip launch
  • 👍 Minimalist UI
  • 👍 Good value
  • 👍 Smooth workflow
  • 👍 Great start
  • 👍 Easy to use
  • 👍 Clean and easy to use
  • 👍 Flexible and easy to use as groove box
  • 👍 Good for beginners
  • 👍 Fast beat creation
  • 👍 Good for iOS music making
  • 👍 Accessible developer
  • 👍 Fun to use
  • 👍 Brilliant app
  • 👍 Great for AUV3s
  • 👍 Deep yet simple interface
  • 👍 Refreshingly simple
  • 👍 Powerful and simple
  • 👍 Good for composing
  • 👍 Great on small screens
  • 👍 Well-organized main interface
  • 👍 Mappable features

Room to Improve

  • 🐛 Record function always starts
  • 🐛 Sand not opening in overview
  • 🐛 Integration with other apps seems off
  • 🐛 Record does not pick up data
  • 🐛 Cannot save ideas from one app to another
  • 🐛 Auv3 interfaces don't scale well
  • 🐛 Not clearly explained it's a paid app
  • 🐛 Not intuitive to use yet
  • 🐛 Note editing, snapping/quantization awkward and buggy
  • 🐛 Sand won't run within AUM anymore
  • 🐛 Sand not recognized within AUM
  • 🐛 Sand wouldn't recognize other apps as host
  • 🐛 Rendering issues
  • 🐛 Editing notes in pitch grid flies up
  • 🐛 Entering note values difficult
  • 🐛 Changing note length has issues
  • 🐛 Bugs not worked out, more brought in
  • 🐛 Clips out of sync when manually triggered
  • 🐛 Needs more detailed instructions
  • 🐛 Unpredictability for creating new notes
  • 🐛 Selecting notes for editing difficult
  • 🐛 Synchronizing between tracks problematic
  • 🐛 Not enough features for usefulness
  • 🐛 Paid for a half-finished app
  • 🐛 Too cluttered to use on iPhone
  • 🐛 Basic functionality
  • 🐛 Cannot change sequence size (meter)
  • 🐛 Cannot set velocity and modulation parameters
  • 🐛 No CC automation recording
  • 🐛 Few slots for patterns
  • 🐛 Does not work with most other iPad instrument apps
  • 🐛 Misleading advertising claims
  • 🐛 Audio integration needed
  • 🐛 Notes editing/selection/moving process is a pain
  • 🐛 No BT headphone support
  • 🐛 Needs more polish
  • 🐛 Occasional crashes
  • 🐛 Useless at v1.0.1
  • 🐛 Less than 50% of synths/plugins show up
  • 🐛 Many plugins don't work properly
  • 🐛 Money better spent elsewhere
  • 🐛 App prompts for purchase again after buying
  • 🐛 Minimalistic beginnings
  • 🐛 Missing standard sequencer features
Medly#3

Medly by Medly Labs Inc.

Music Making for Everyone
Worth Considering
🎵 Music
4.6😊(38K ratings)
FreeIn-App Purchases
Medly screenshot 1
Medly screenshot 2
Medly screenshot 3
Medly screenshot 4
Medly screenshot 5
Medly screenshot 6

Create studio-quality music productions with an intuitive interface. Easily arrange notes, audio samples, and loops into sections to build songs. Offers advanced tools for editing, automation, and sharing your creations.

What We Love

  • 👍 Great for beginners
  • 🎨 Intuitive and easy to use
  • 🎶 Variety of sounds and instruments
  • 💡 Helpful tutorials
  • 🚀 Simple and efficient

Room to Improve

  • 💰 Subscription model too expensive
  • 🔒 Limited access to features without subscription
  • 🎨 Restricted customization options
  • 🎶 Lack of diverse instrument selection
  • 🐛 Occasional crashes and bugs

More Online Sequencer apps to explore

FAQ about Online Sequencer

What are the best online sequencer apps for iPhone?
Helio Sequencer tops our online sequencer apps ranking as of September 2026, with a 4.4-star average from 13 App Store ratings, and it's free to download.
Yes — 9 of the top online sequencer apps we rank are free to download, including Helio Sequencer and SAND: Audio MIDI Sequencer.
Helio Sequencer has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 248+ online sequencer apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Helio Sequencer is a free and open-source music sequencer. It is designed for hobbyist composers, game developers, and indie artists looking to create music.
Helio Sequencer is available for iPhone, iPad, and iPod. It is designed to run on Apple's mobile operating systems.