Sequentia: MIDI Sequencer

Sequentia: MIDI Sequencer

Generate riffs, chords & drums

10 ratings
15 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • July 1, 2026
  • September 2, 2026
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iphone
ipad
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About

This app transforms your iPhone into a powerful MIDI sequencer for hardware synthesizers and drum machines. Generate complex musical patterns, control parameters, and integrate with your DAW. Save and export your creations for further editing.

Generative MIDI patterns
Hardware synth control
DAW integration
Customizable modules (Drums, Acid, Chords, Arp, LFO)
Live pattern editing
MIDI export (.mid)
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What's New in Sequentia

4.0

September 2, 2026

Now on iPad The whole app, laid out for the tablet rather than stretched onto it. The rack is a grid of cards you page through, three across on a 13 inch. Menus arrive from the right and nothing underneath them moves. Open a module and it steps out of the rack into the middle of the room with its settings beside it, so you are looking at the thing you are changing. Landscape, for a stand and two hands. Your projects, on both Turn iCloud on and your work follows you. Start a track on the phone in the morning and open it on the tablet in the evening, with the presets, the samples and the covers already there. There is a Sequentia folder in Files, so a project is a file you can copy, send and keep like any other. Off until you switch it on. Export the whole thing at once One door for the whole project instead of one module at a time. Take the rack out as MIDI, or every scene as its own folder, named so the session opens in your DAW already making sense. If there are samples in the rack, one tick brings the audio along with it. Fixes A sample dropped into a rack that was already playing now starts on the beat instead of a sixteenth late. A modulation lane keeps the name of what it is aimed at when you close the project and open it again.

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Subscription plans

Sequentia Pro Monthly

All Pro features, billed monthly.

$7.991 Month
3 Days trial
How to cancel Sequentia subscription ⁉️
1

In-App Purchases

$79.99

Sequentia Pro Lifetime

Unlock every Pro feature, forever. One-time purchase.

User reviews

Nice concept

It has a nice design layout, good sounds and is fun to play around with. But the pricing for a license to run this app is horrible. $80 to avoid paying a subscription fee? Disappointing.

Response from developer

Thanks for the kind words about the design and the sounds. Lifetime is not the only way to get Pro, and it is not needed to use the app fully. There is a monthly plan and a yearly plan, both priced to be accessible, and most people start with the monthly one. Lifetime is a separate option for anyone who does not want a recurring payment at all: bought once, never renews, yours permanently. That is why it sits above a year of the subscription rather than below it.

Impressive app!

An impressive new app. If you want a streamlined tool for live jamming and sequencing external gear (drum machines, synths), particularly for electronic music, you need to try this out. I was shopping for a more powerful hardware sequencer. For the time being, not anymore!

One difficulty with using sequencers is that you need a good balance between usability and depth. Too technical and deep and you get stuck in programming stages and experiments. Too superficial and you end up with the same bloopy sequences or beats again and again.

Here you can quickly find a key, lay down one or two types of sequences (e.g. acid line, general bass, or stabs, basic euclidian) and then randomize, create quick variants, and apply various mutations. Even better: you can work out sequences on phone (and now ipad) with stock sounds to use later once you’re back working with hardware. All of these features push you towards making music. For example, you can’t edit the stock sounds and the core sequence types are deliberately constrained (e.g. a single euclidian sequencer has three pulses at a time).

I’ve used the app quite a bit in the last week and have found a couple minor bugs, usability issues, and had a couple of ideas for development.

Possible bugs: Sometimes stabs pitch up and down an octave when you enter them or randomize. It’s not always clear why. The visual representation has also been inconsistent on them sometimes. I also love the new iPad release generally (was using phone version on iPad) but I’ve noticed if I add variations (which introduces a new bottom row to the rack card) the display cuts the very top and bottom off of the display. Still perfectly usable, but might benefit from being longer.

Usability: I like the ‘halo’ gradient effect when you touch the screen and make selections. It works well on the dark versions of the app. However, on the light versions, the halo obscures the display enough that it can be difficult to navigate some options.

Ideas for development: I much appreciate the minimal approach and like the choice to avoid too much customization. Suggestion 1: I would love to be able to offset the start of a sample (e.g. to start a bar or two into the sequence). Suggestion 2: in the chord sequence, I would appreciate the option to select ‘silence’ or ‘no chord’ for a section of the sequence. This would allow for sequences with breaks.

Thanks for your work on this, keep it up!
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Response from developer

Thank you so much for the high praise and for such valuable and helpful feedback. The ideas you suggested will definitely be considered for future improvements to Sequentia. And thank you as well for reporting the bugs - they will also be carefully investigated in detail.

Very intriguing app, but…

$80 is a little steep for the perpetual license. I completely understand that developers need to get paid, particularly solo ones, but $80 is on the extreme high end when compared to some of the best tools in the industry. I mean I can get some of the best synths, fx, sequencers out there, packed with content, for significantly less and those are backed by a team of devs and piece of mind that it won’t be vapor ware in 6 months.

BTW, this does really appear to be a well thought out, polished app that’s worth investing time into learning but the pricing model as it is now is probably gonna be too much of a barrier. I’d love to be able to outright own the app, but for now I’ll probably continue testing the free portions as long as possible, to get a better feel for what’s on offer here. Kudos to the dev if there’s no time limit or major restrictions for checking it out.

My advice to the dev would be: you have a legitimately interesting app here and to consider a rent-to-own option and/or dropping the full price to $30 max. Again, I sympathize with the plight of a solo developer, but some of the best iOS music making apps are a fraction of the cost of this one. I mean access to Apple Logic on iPad costs me $4.99/month.

Either way I’m really interested in testing out this app and will support it the best I can if the functionality matches the presentation, but the pricing does seem a little out of sync with market.
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Response from developer

Thanks for the feedback. Lifetime is not the only way to get Pro. There is a monthly plan and a yearly plan, both priced to be accessible, so everyone can pick what fits their budget. You do not need the Lifetime version to use the app fully. The monthly Pro subscription unlocks everything.

so much fun

Very inspiring workflow with a perfect balance between manual input and generative features (both is possible).
The UI is fun both on iphone and tablet.
Amazed by every single update!

Response from developer

Thank you for the great review! 🖤 We definitely plan to add a "run in background" option in the future. Due to technical constraints, an app must generate its own audio to remain active in the background. To make this possible, we are working on a major update that will introduce a full internal audio engine. This will achieve two major goals: it will officially enable background operation, and it will allow musicians to create, hear, and save ideas entirely standalone, without needing to connect external MIDI devices. Stay tuned!

Masterpiece

A masterpiece of software. Powerful, great looking and very well made.

Response from developer

Many thanks for your positive feedback and the high rating.

Developer apps

FAQ

What is Sequentia?

Sequentia is a generative MIDI sequencer that turns your iPhone into a creative tool for hardware synthesizers, drum machines, and DAWs. It focuses on generating musical patterns and controlling MIDI parameters without built-in sounds.

Does Sequentia have ads?

No, Sequentia does not contain advertisements. The app offers a free version with optional in-app purchases for advanced features.

What are the features of Sequentia Pro?

Sequentia Pro unlocks all drum styles, the full generative engine, personal pattern and preset libraries, unlimited projects, and studio features like DAW sending and MIDI export.

Can Sequentia sync with other music gear?

Yes, Sequentia can send MIDI Clock and Start/Stop signals to sync your external hardware. It also acts as a virtual MIDI source for recording into DAWs like Logic and Ableton.

What kind of musical patterns can Sequentia generate?

Sequentia can generate drum grooves (Techno, House, Electro, DnB), 303-style acid lines, diatonic chord progressions, arpeggios, and LFO modulation patterns. It also offers features like Random, Mutate, Fills, and Humanize for creative pattern evolution.

What devices does Sequentia support?

Sequentia is currently supported on iPhone. It was last updated on July 10, 2026, with version 1.0.3.

How does Sequentia handle user data and privacy?

The app's privacy policy is available at https://sequentiaapp.framer.website/privacy. Users can manage their data and privacy settings according to the policy.

What is the age rating for Sequentia?

Sequentia has an age rating of 4+, making it suitable for a wide range of users interested in music creation.