JamEngine vs ChordWeave

JamEngine is a real-time music generation app that puts a full backing band in your pocket. Choose from 15 musical styles, pick your key and tempo, and JamEngine instantly creates authentic, genre-appropriate arrangements, complete with MIDI drums, bass, guitar, piano, brass, and woodwind instruments. Whether you're a guitarist looking for a rhythm section to practice over, a songwriter sketching out chord progressions, a jazz player working on improvisation, or a producer hunting for inspiration, JamEngine gives you a responsive, endlessly variable musical companion. 15 STYLES TO CHOOSE FROM Rock · Hard Rock · Classic Rock · Metal · Pop · Ballad · Blues · Slow Blues · Jazz Swing · Jazz Ballad · Funk · Bossa Nova · Reggae · Country · Lo-fi Each style comes with genre-authentic drum patterns, bass lines, guitar voicings, keyboard parts, and horn arrangements. 12 INSTRUMENTS Build your arrangement from a roster of 12 instruments, each with realistic General MIDI sounds: • Drums · Bass · Electric Guitar · Acoustic Guitar • Piano · Organ · Strings • Trumpet · Trombone · Alto Sax · Tenor Sax · Clarinet Mix and match any combination. Each instrument has independent volume, mute, solo, pan, density and 11 variation levels to control the complexity and character of its part. SMART CHORD PROGRESSIONS Build chord progressions using the grid editor or the interactive Circle of Fifths, a visual tool that highlights diatonic chords in your selected key, so you can see at a glance which chords belong together. Start from scratch, or load one of the built-in templates: I-IV-V, I-V-vi-IV, ii-V-I, 12-Bar Blues, Jazz Turnaround, and more. Choose from 18 chord types including major, minor, seventh, diminished, augmented, sus, and extended chords. FLEXIBLE TIME & KEY Play in any of 7 time signatures, 2/4, 3/4, 4/4, 5/4, 6/8, 7/8, and 12/8, with BPM from 40 to 300. Tap tempo to match a song. Select any of the 12 keys in major or minor. Change key mid-session and your chord progression transposes automatically to preserve harmonic relationships. VARIATION RANDOMIZER Enable the variation randomizer and JamEngine will shuffle instrument variations at musically appropriate boundaries, every 4 or 8 bars, keeping your practice sessions fresh and unpredictable without you lifting a finger. EXPORT YOUR SESSIONS Capture your jam as a WAV, M4A, or multitrack MIDI file. Use export to bring your arrangements into your DAW for further production. SONGBOOK Save your favorite sessions, style, key, tempo, chord progression, and instrument setup to your personal Songbook. Load them instantly to pick up where you left off. CUSTOM SOUNDFONTS Import your own SF2 SoundFont files to customize the sound of every instrument. FREE TO START, PRO TO UNLOCK EVERYTHING JamEngine is free with 4 styles (Rock, Metal, Jazz Swing, Lo-fi), 3 song saves, and all playback features. Upgrade to JamEngine Pro for a one-time purchase to unlock all 15 styles, unlimited song saves, and full export capabilities.

ChordWeave is a chord progression and songwriting app for iPhone and iPad. Pick one of 24 keys and a mood to hear a chord progression instantly, play a keyboard and have ChordWeave name your chords, and write lyrics with Apple Intelligence. It runs on your device, with no account. HEAR A PROGRESSION INSTANTLY ChordWeave opens on the Composer with a playable progression ready. Pick any of 24 keys and a mood, tap Generate, and hear it right away. Where Apple Intelligence is available, it refines the result on your device. Reorder chords, hear each one, and see its notes. ADD TO A SONG (PRO) Turn a progression into a Song Project: arrange intro, verse, chorus, bridge and more, reorder the sections, and play the whole song. Try a playable sample project first. WHY IT WORKS (PRO) Get a short theory explanation for each progression, tied to its chords, so you learn why it sounds the way it does. PLAY & NAME CHORDS Play on the on-screen keyboard or a connected MIDI keyboard and ChordWeave names the chord. Build a progression by playing, then get suggestions for what comes next in pop, jazz, blues and more. Includes a metronome. Listen for Key (iOS 27) detects the key and tempo from a few seconds of playing or singing. LYRIC WRITING With Apple Intelligence, write verses, a chorus and a bridge for your mood, theme and style. Edit and save them in your library. EXPORT Share a progression as a picture card (chords, key and tempo), export it as a MIDI file for your DAW, or share it as text. MADE FOR iPAD A native iPad app in every orientation, with two-column layouts that use the whole screen. MUSIC THEORY REFERENCE Scales and modes in every key, the chords of each scale with Roman numerals, and common progressions. SIRI & SHORTCUTS Ask Siri for a chord progression, or see your recent compositions, without opening the app. Saved compositions also appear in Spotlight search. PRIVATE BY DESIGN Apple Intelligence features run entirely on your device, and your songs are never uploaded to a server. Without Apple Intelligence, ChordWeave uses built-in music theory instead. No account. No tracking. No ads. FREE AND PRO Free: play and chord naming, the Composer, single-progression MIDI and text export, lyrics, music theory, Siri, and up to 3 saved compositions and 3 saved lyric sets. ChordWeave Pro: unlimited saves, Song Projects and Why it works. Choose Annual, Lifetime, Monthly or Weekly. COMMON QUESTIONS Does ChordWeave identify chords from a song or recording? No. It names the chords you play on the on-screen keyboard or a connected MIDI keyboard. Listen for Key (iOS 27) detects the key and tempo from a few seconds of playing or singing, not the chords. Is it free? You can start free: chord naming, the Composer, lyrics, music theory, MIDI and text export, and up to 3 saved compositions and 3 saved lyric sets. ChordWeave Pro adds unlimited saves, Song Projects and Why it works. Do I need Apple Intelligence? No. Progressions and chord naming use built-in music theory. AI-written lyrics need Apple Intelligence; without it, Lyrics gives simple starter lines. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in Settings > Apple Account. Terms of Use: https://dotdotdotapps.com/terms Privacy Policy: https://dotdotdotapps.com/privacy Without Apple Intelligence, Lyrics gives you simple starter lines based on your theme instead of AI-written lyrics.