Comparison

Chordbot vs Prism MIDI Sequencer

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

Head to head
About

Chordbot

Easily create and play chord progressions with various instrument tracks. Experiment with complex arrangements without needing music theory knowledge. Ideal for songwriting or generating backing tracks for practice.

Highlights
  • Create and play chord progressions
  • Hundreds of instrument tracks
  • Experiment with complex arrangements
  • Songwriting and practice backing tracks
  • MIDI/WAV export
  • Automatic song generation
Features
Currently charting
Read full description

Chordbot lets you create and play chord progressions in different styles easily. Just add chords, select instrument tracks and hit play. Experiment with complex chord progressions without having to master an instrument or music theory first. Great for songwriting experiments or to create your own backing tracks for instrument practice. Easily create arrangements and mixes by selecting from hundreds of piano, guitar, synth, bass and drum tracks. This is the full version of Chordbot with all features enabled. There is also a free evaluation version (Chordbot Lite) with disabled save/export features that you could/should try before buying the paid version. Features: * 60+ chord types Including classics like AugAdd2 and Min7(#11), in all inversions. * 70+ comping style presets Simple but usable arrangements that won't get in your way. * 400+ instrument tracks Individually mixable dynamic instrument tracks that can be combined to form unique comping styles. * Inversion control / slash chords Manually select chord inversions, or let Chordbot select the smoothest inversion automatically. * Song sections Songs can be structured into repeatable sections (verse, chorus, etc). Each section can have its own comping style/arrangement. * MIDI/WAV export and background playback Refine your compositions in a DAW/MIDI sequencer or play along with a virtual instrument * Song-O-Matic Automatic song generator with pop, jazz and experimental profiles. See chordbot.com for more information and audio demos. Please report all bugs to: support@chordbot.com

About

Prism MIDI Sequencer

This app is a powerful 16-track MIDI step sequencer designed for iOS devices. It allows users to create complex musical patterns with high resolution, elastic timing, and per-step control. It integrates with external synths and samplers, offering extensive features for melody, harmony, and drum sequencing.

Highlights
  • 16-track AUv3 MIDI step sequencer
  • High resolution and elastic timing
  • Per-step control and step FX
  • Scale modes and flow modes for tonal tracks
  • 16 mini-sequencers per drum track
  • LFOs, arpeggiator, and generative tools
  • Scene and mute profile performance modes
Read full description

Prism is a 16-track AUv3 MIDI step sequencer for iPhone and iPad that turns sparks of inspiration into living, breathing music. It’s built for touch and flow—pair it with your favorite synths, samplers, drum apps, and gear. Key Features ------------- [ Sequencing Engine ] ---------------------- - High resolution: 1/32 steps, up to 512 trigs/pattern, swing, polyphony, micro-timing per step - Elastic timing: per-sequence lengths plus smooth speed changes for real polyrhythm/polymeter - Per-step control: parameter locks and Step FX - Playback modes: Standard, Overlap, Trig Legato, Drone - Capture everything: live record with quantize, retroactive recording (always listening), and tap-in steps - Human feel & probability: Chance, Every, Hold, Range, Accent [ Tonal Tracks (Melody & Harmony) ] ------------------------------------ - Always in key: scale modes across the app (use built-in scales or create your own) - Note input modes: Poly, Chord Simple, Chord Multi, Chord Blocks - Flow modes (musical logic): Standard, Peek, Echo, Melt, Mirror - Per-Trig Step FX: Velocity, Pitch, Ratchet, Strum - Multi-Seq: 4 independent sequencers per tonal track to weave interlocking parts - Import and edit .MIDI files [ Drum Tracks (Kits & Samplers) ] ---------------------------------- - 16 mini-sequencers per drum track with independent settings, FX, and controls - Modular linking, advanced layering, and Drum↔Tone interactions for shared timing tricks - Drum profiles for fast kit routing and universal connectivity - Per-Trig Step FX (drum): Velocity, Length, Ratchet, Flam [ Modulation, Generative & Creative Tools ] ------------------------------------------- - 6 LFOs per track (track-tied and CC-tied) for tempo-synced movement and evolving patterns - Per-track/pattern 16-step Arpeggiator—from classic to experimental - Harmonizer and Hue Sequencer for chord color and phrase rotation - Tape-style MIDI Slicer & Looper (per track/pattern) for instant remixing - Smart randomizers: one-tap generation for drum patterns, sequences, and fx. [ Performance, Workflow & UI ] ------------------------------ - Scenes, mute profiles, and bar looper to play, capture, and perform. - Fast edits: copy, paste, multi-select, quick duplicate - Multi-touch keypad matrix & sequencer for hands-on control - Light & Dark themes - Host-aware saving (internal presets + AUv3 state) [ Hardware & Host Integration ] ------------------------------- - Deep, bi-directional control for Novation Launchpad (Pro, Mk3, Mini, X) and Launchkey Mini MK4 with LED feedback & mappings - External MIDI in/out/thru, per-track channel routing - AUv3 works in leading hosts (e.g., AUM, Logic Pro for iPad) [ Timing & Specs ] ------------------- - High-precision engine: 480 PPQN for tight playback at any tempo - iPhone & iPad AUv3 (MIDI-only; no built-in sounds) ---------- Find more info at sites.google.com/view/prism-midi-sequencer/home Happy creating, y’all. —A Mortal Mage

Screenshots

Chordbot4 screens
Prism MIDI Sequencer4 screens

Verdict

The call

The clearest difference is price: Chordbot at $4.99 against Prism MIDI Sequencer's $19.99. Chordbot also leads on in-app purchases (none vs 5) and chart position (#123 vs unranked). Prism MIDI Sequencer's advantage is update cadence (every 2 weeks vs every 7 months) and rating (4.8 vs 4.6). On review sentiment, ratings volume, ads and device support 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

Chordbot costs $4.99 and Prism MIDI Sequencer $19.99 up front. Prism MIDI Sequencer sells 5 one-off in-app purchases. Chordbot asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Prism MIDI Sequencer holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 39 and 33 respectively. Written reviews point the same way: 82% of Chordbot's written reviews are positive against 86% of Prism MIDI Sequencer's.

UpkeepUpdate frequency

Chordbot ships an update every 7 months, Prism MIDI Sequencer every 2 weeks. The most recent releases landed on October 19, 2026 and October 14, 2026 respectively.

Scorecard7 real differences · 4 level
Chordbot versus Prism MIDI Sequencer: the parameters behind the verdict, then further details
ParameterChordbotPrism MIDI Sequencer
Price$4.99 — better$19.99
Rating4.6 (39 ratings)4.8 (33 ratings) — better
Positive reviews82.1% of reviews85.7% of reviews — better
Number of ratings39 — better33
Update frequencyEvery 7 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#123 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size18 MB55 MB
Age rating4+4+
DeveloperContrasonic ABTyler Quatraro

Customer experience

Chordbot

All ratings39 ratings
Positive87.2%
Neutral7.7%
Negative5.1%
Written reviews324 reviews
Positive82.1%
Neutral4.6%
Negative13.3%

Prism MIDI Sequencer

All ratings33 ratings
Positive93.9%
Neutral3.0%
Negative3.0%
Written reviews21 reviews
Positive85.7%
Neutral4.8%
Negative9.5%

Bugs and requests

Chordbot

Reported bugs

3 issues
  • Crashes when exporting MIDI files
  • Inability to save or name songs consistently
  • Compatibility issues with newer iOS versions

Requested features

7 requests
  • Ability to create and save custom chord progressions
  • More diverse selection of musical styles and genres
  • Option to mute or adjust individual instrument tracks
  • Improved MIDI export functionality
  • Integration with other music apps and DAWs
Show 2 more
  • Dark mode and visual customization options
  • Undo/redo functionality for editing

Prism MIDI Sequencer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Chordbot

No in-app purchases

5 purchases

Prism MIDI Sequencer

One-time5
  • LFO Extension$4.99
  • Step FX$4.99
  • Multi-Sequencer [Tone Tracks]$4.99
Show 2 more
  • Launchkey Mini MK4 Control$4.99
  • Euclidean Sequencer Extension$4.99

Questions

Is Chordbot free?
Chordbot costs $4.99, with no in-app purchases.
Is Prism MIDI Sequencer free?
Prism MIDI Sequencer costs $19.99, and also offers in-app purchases.
Which has better reviews, Chordbot or Prism MIDI Sequencer?
Prism MIDI Sequencer is rated higher. Chordbot averages 4.6 out of 5 from 39 ratings, while Prism MIDI Sequencer averages 4.8 from 33 ratings.
Do Chordbot or Prism MIDI Sequencer have ads?
Neither Chordbot nor Prism MIDI Sequencer shows ads.
Which is updated more often, Chordbot or Prism MIDI Sequencer?
Chordbot ships an update every 7 months, and Prism MIDI Sequencer every 2 weeks. Most recently, Chordbot was updated on October 19, 2026 and Prism MIDI Sequencer on October 14, 2026.

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