# ModusCycler — Modi & Jamming — Jam Session Builder & Skalen > Jam Session Builder & Skalen (iPhone/iPad app by Robert Ulrich Seidel Dr.) - Source: https://appshunter.io/ios/app/moduscycler-modi-and-jamming/id6790923875 (this page in markdown: same URL + `.md`) - Developer: [Robert Ulrich Seidel Dr](https://appshunter.io/developer/6790923877) - Category: Music, Education - Price: $17.99 - Age rating: 4+ - Requires: iOS 15.0 · 50 MB - Languages: American English - Released: 2026-07-22 - Data updated: 2026-09-19 ## What is ModusCycler? Turn chord progressions into music you understand. ModusCycler shows you the matching church modes and scales for any progression — on fretboard, TABs, piano and standard notation — and backs you up with a complete jam band. JAM SESSION BUILDER Build your own backing track in seconds: tap chords into the bar grid, get piano accompaniment with musical embellishments (a statistical improviser based on Chopin and Beethoven statistics), plus a precise metronome with swing — hit Play and jam. Launch offer: everyone who joins in the first 6 weeks keeps the Jam Session Builder free forever — afterwards it is a €19.99 in-app purchase. NEW: ESCALATOR — SCALE REFERENCE & SLIDES All seven positions of the major scale as a printable Kiltz/CAGED and 3NPS reference, now right inside the app. The transitions trainer connects positions with slides — and the new out-of-scale slides reveal the pros' trick: change the entire scale family with ONE shape, using a slide formula like "C, 2 frets down and back". You always land on a chord tone, fingering included. NEW: CHEATING CHEAT SHEET WITH SCALE-CHANGE COMBOS Two linked wheels per chord: church mode and scale in shorthand. Below, every mode combination of your progression sorted by effort: no change, one change (there and back) or two — each with its slide formula. Pin chords to keep them fixed; the eScalator opens right with the matching keys. SCALES FOR IMPROVISATION TUTOR The modes·explorer derives church modes step by step on the fretboard: choose a position, understand the mode, play the scale. With Kiltz/CAGED boxes and all seven 3-notes-per-string patterns. FOR EVERY MELODIC INSTRUMENT ModusCycler shows you which notes fit over the chords — in standard notation and by note name, playable on any instrument. Ideal for improvising and melodic accompaniment on saxophone, clarinet, flute, trumpet, violin, xylophone, vibraphone, accordion, harmonica or voice. Fingering diagrams cover guitar and piano; the scale theory applies to all. MORE FEATURES - Fresh tile design: four approaches (Global, Smart, Flexible, Cheating) and four views (fretboard, TABs, piano, notation) at a glance - Build progressions: wheel picker, modal interchange table, circle of fifths, song database - Smart analysis: matching modes with percentage ranking and character descriptions - Undo for chords and modes, key-change dialog with pin - Stage view: all scale diagrams full-screen — print-quality, with a transport bar - Notation with correct key signatures, deviations shown with accidentals - Real piano samples, metronome with sounds and swing - Tutorials: bird's-eye overview + 12-step tour, extensive online manual - 6 languages: English, German, Spanish, French, Italian, Norwegian For everyone who improvises, accompanies flexibly or finally wants to understand modes — guitarists, pianists, wind and brass players, string players, singers, songwriters and producers. TRY THE FULL VERSION FOR FREE On app.moduscycler.com the complete full version runs free in your browser for one day — after that it continues there with limited features. Try everything before you download the app. Looking for modes, church scales, improvisation or jamming? ModusCycler (also "Modus Cycler") brings you scales, modes and chords for your next jam session — improvise on guitar, bass, piano and every melodic instrument. ## Is ModusCycler safe? Not enough ratings yet to assess ModusCycler. ## Is ModusCycler legit? ModusCycler — Modi & Jamming has limited verification signals. The AppsHunter Legitimacy Score for ModusCycler is 58 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 5 releases) ### 0.7.5 — 2026-09-14 ModusCycler finds the matching mode for your chord progression, shows the scale on the fretboard and builds the jam track to match. New in 0.7.5: - Understand modes: Above every fretboard you now get one sentence telling you what you play — scale, root, chord tones and character notes, coloured to match the dots on the fretboard - Jam: A new session sounds finished right away — cello bass and piano come preloaded - Stay in time: Click and chords start together and no longer drift apart when you switch instruments - Cheating: One tap arms the wheel, a second one ends the turning - Shapes: Positions 4E and 4A were missing a note on the G string — fixed - New app icon www.moduscycler.com ### 0.7.4 — 2026-08-25 New in 0.7.4: - Practice line "Harmonies": the full scale ascending — avoid notes out, character tone stays - eScalator transitions open with the first scale change of your progression - modes·explorer starts in the position you actually see — and "X" really discards - Root of the base scale marked in bold, on screen and in print - Jamming areas as four clear tiles - 3-NPS positions 1A and 1D now show all six strings www.moduscycler.com ### 0.7.3 — 2026-08-17 New in 0.7.3: - Circle of fifths highlights mode chords (degrees I–vii°) and the key borrowed chords in color - Stability check: does your mode hold, or does it collapse? One-tap perspective switch - New chords sound once when added (can be turned off) - Fullscreen: big fret numbers, blue focus follows the music, color legend and explanations - eScalator: help panel and corrected fingerings - Better colors in dark mode www.moduscycler.com ### 0.7.2 — 2026-07-30 Fresh design and a new centerpiece: the eScalator brings the full scale reference (Kiltz/CAGED & 3NPS) into the app — with slides training and the new out-of-scale slides: change scale families with ONE shape using a slide formula, always landing on a chord tone. Plus: the Cheating cheat sheet with scale-change combos, four approaches and four views as clear tiles, undo, key-change dialog, a reworked tour and a complete online manual in 6 languages. ### 0.7.0 — 2026-07-23 No release notes. ## Apps similar to ModusCycler | App | Rating | Price | Category | | --- | --- | --- | --- | | [Composer Lab](https://appshunter.io/ios/app/composer-lab/id6744673208) | 5.0 (2) | $17.99 | Music | | [Resolve: Reactive Ear Training](https://appshunter.io/ios/app/resolve-reactive-ear-training/id6737443921) | 4.5 (6) | $17.99 | Music | | [Chordio+: create & learn music](https://appshunter.io/ios/app/chordio-plus-create-and-learn-music/id1662210145) | 2.3 (6) | Free | Music | | [GigFast Lite: Neural Amp Suite](https://appshunter.io/ios/app/gigfast-lite-neural-amp-suite/id6503917233) | 3.7 (39) | Free | Music | | [PolyNome: THE Metronome](https://appshunter.io/ios/app/polynome-the-metronome/id488165644) | 4.7 (662) | $9.99 | Music | | [Solo - Fretboard Visualization](https://appshunter.io/ios/app/solo-fretboard-visualization/id1537057699) | 4.8 (644) | $17.99 | Music | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-19.*