Comparison

Sequentia vs OR

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sequentia

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.

Highlights
  • Generative MIDI patterns
  • Hardware synth control
  • DAW integration
  • Customizable modules (Drums, Acid, Chords, Arp, LFO)
  • Live pattern editing
  • MIDI export (.mid)
Read full description

Sequentia is a generative MIDI sequencer for synths, drum machines and modular. Add a module and it writes its own part: drums, basslines, arps, chords, melodies. Press Random and a full pattern is playing. Turn on Mutate and it keeps evolving while it runs. The pattern libraries are written for techno and acid, and the generative modules go further out than that. Seven finished demo tracks come with the app. WHAT WRITES THE PARTS Drums, eight lanes, with the swing each genre actually has. Tops, cymbals, shakers and claves over the kit, on one fader. Bass, sixteen styles from techno to dub to EBM. Acid, 303 lines that really slide. Chords and Arp, in your key, following each other. Stabs, from skank to rave. Piano, drawn by hand or written for you. Euclid, three rings at different lengths, drifting apart and landing together bars later. Rain, notes falling from a drizzle to a downpour. Bounce, physics balls playing your key off the walls. Sampler, your own loop, warped to the tempo and the key. Mod, LFOs that sweep your synth's knobs on their own. Vinyl, a record that turns while the rack plays. Mixer, to solo, mute and balance live. ONE STUDIO, YOUR WHOLE RIG Every module picks its own MIDI device and channel, so each machine gets its own part. MIDI over USB-C, Bluetooth or network. MIDI Clock in and out keeps the gear in time. In any DAW the app is a MIDI source you can record straight onto a track. Leave the app and the music keeps playing, with the controls on your Lock Screen. MODULATE AND CONTROL YOUR HARDWARE Pick your machine from the library and its control map loads, ready to turn: over a hundred and thirty synths, grooveboxes and drum machines, every map read out of its own manual. Put an LFO on any of those knobs and it sweeps in time with the pattern. Arm the red R, turn a knob by hand, and the move becomes a loop locked to the bar. CC coming in works too, so a controller fires Random, Mutate, mutes and the transport. LIVE JAM Every module keeps pattern slots. Fill them as you go and switch on the bar, like clips. Live Performer is one pad for the whole rack: move a finger and every module answers at once with more density, new variations or a break. Fills, swing and humanize are a tap each, while everything runs. SCENES, AND A SET YOU CAN PLAY Save a section as a scene, put the scenes in order, and the timeline plays the set. Or switch scenes by hand while it runs. A project holds several racks, each with its own key and tempo, so a breakdown can sit lower and slower than the drop. ONE PROGRESSION, EVERYTHING FOLLOWS Write the chords once. The basslines, arps and stabs follow the changes. NO HARDWARE YET Every module plays through the app's own synth, free, so a whole track works with nothing attached. Load your own samples into the Sampler, or build a drum kit out of them. EVERYTHING IN ONE PROJECT Notes, patterns, scenes, samples, routing and arrangement live in one project that saves itself. Take the whole thing out in one step: the rack as MIDI, or every scene as its own folder, named so the session opens in your DAW making sense. Samples come with it if you want them. ON IPHONE AND IPAD One app for both. On the tablet the rack becomes a grid of cards you page through, three across on a 13 inch. Menus come in from the right and leave the instrument where it is. Open a module and it steps into the middle of the screen with its settings beside it. Landscape, for a stand and two hands. Turn iCloud on and the same projects, presets and samples are on both devices, in a Sequentia folder you can see in Files. Off until you switch it on. Sequentia is free, and so is the built in sound, Live Performer and CC Control. Sequentia Pro adds pattern slots, scenes, several racks, every drum style, your own libraries, unlimited projects and MIDI export. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.sequentia.studio/privacy

About

OR

This application acts as a generative MIDI Note-FX, controlling external synths, samplers, and drum machines. It offers advanced features like Euclidean and polyrhythmic sequencing, stochastic drift, and scale quantization with chord lock. Designed for musicians to create complex MIDI patterns without generating sound itself.

Highlights
  • Euclidean sequencing
  • Polyrhythm generation
  • Stochastic drift
  • Modulators
  • Scale quantizer with chord lock
  • Tempo and random performance controls
  • MIDI Learn
Features
Read full description

OR-1 makes no sound on its own. It's a generative MIDI Note-FX — the brain, not the sound source — that plays your own synths, samplers, and drum machines for you… - Euclidean - Polyrhythm - Stochastic drift - Modulators - Scale quantizer with chord lock - Temp and random for performance - MIDI Learn - 19 factory presets, including 13 rhythm kits for General MIDI drums - Save your own presets - Light and dark themes — tap the OR—1 logo - Full-screen layout that grows to fill the 13-inch iPad and reflows to fit smaller iPads

Screenshots

Sequentia4 screens

Verdict

The call

The clearest difference is in-app purchases: OR at none against Sequentia's 3. OR also leads on rating (5.0 vs 4.7) and iOS requirement (15.0 vs 17.0). Sequentia's advantage is update cadence (every 11 days vs every 6 weeks). On price, review sentiment, ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sequentia sells 3 in-app purchases, starting at $7.99 per month. OR asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OR holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 10 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Sequentia ships an update every 11 days, OR every 6 weeks. Both last shipped on October 24, 2026.

Scorecard5 real differences · 5 level
Sequentia versus OR: the parameters behind the verdict, then further details
ParameterSequentiaOR
PriceFreeFree
Rating4.7 (10 ratings)5.0 (8 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings10 — better8
Update frequencyEvery 11 days — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad — betteriPad
Requires iOS17.015.0 — better
Further details — not scored
Size25 MB10 MB
Age rating4+4+
DeveloperYahor KamarouJori Eero Larres

Customer experience

Sequentia

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews17 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

OR

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Sequentia

Subscriptions2
  • Sequentia Pro Monthly3 Days trial$7.991 Month
  • Sequentia Pro Yearly3 Days trial$39.991 Year
One-time1
  • Sequentia Pro Lifetime$79.99
None

OR

No in-app purchases

Questions

Is Sequentia free?
Sequentia is free to download, with in-app purchases available.
Is OR free?
OR is free to download, with no in-app purchases.
Which has better reviews, Sequentia or OR?
OR is rated higher. Sequentia averages 4.7 out of 5 from 10 ratings, while OR averages 5.0 from 8 ratings.
Do Sequentia or OR have ads?
Neither Sequentia nor OR shows ads.
Which is updated more often, Sequentia or OR?
Sequentia ships an update every 11 days, and OR every 6 weeks. Most recently, Sequentia was updated on October 24, 2026 and OR on October 24, 2026.

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