Songwriter's Calculator
Keys, Chords, Scales & Tools
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
26 scales. 24 solo styles. 10 tunings. Chord progressions, key finder, ear training, metronome, tuner & capo — one app, one payment, no subscriptions.
The Songwriter's Calculator is every music theory tool you need in one app — built for songwriters, not music professors.
Pick a key. See every chord, scale, and mode instantly. Hear how they sound. Write better songs faster.
WHAT'S INSIDE:
CREATE — Choose a root note and any of 26 scales and modes. See the diatonic chords with piano and guitar voicings shown side by side. Generate progressions organized by verse, chorus, and bridge — each with harmonic analysis, vibe descriptions, and real songs that used them. Toggle between Roman numerals and Nashville numbers. Explore 24 solo styles on the fretboard — from BB King's box to Hendrix, SRV, Gilmour, Clapton, and Nashville session patterns.
IDENTIFY — Enter the chords you're already playing and instantly find what key you're in, what scale works, and what other chords fit. Don't know the chord name? Tap the notes on the piano or place fingers on the interactive fretboard and the app identifies it. Every result shows both instruments.
LEARN — Interactive circle of fifths with key relationships, diatonic chords, and one-tap navigation to the generator. Ear training drills for intervals, triads, and seventh chords with score and streak tracking.
TOOLS — Chromatic tuner with real-time pitch detection via your mic. Metronome with tap tempo, subdivisions (quarter through sixteenth), and time signature support (4/4, 3/4, 6/8). Capo calculator that shows every fret position and open shape for your target key. 10 guitar tunings including Drop D, DADGAD, Open G, Open D, Open E, and more — the fretboard recalculates automatically.
26 scales. 24 solo styles. 10 tunings. No account. No ads. No subscription. Just open it and play.
Built by a songwriter, for songwriters.
The developer, Samuel Beseres, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Samuel Beseres
- Size
- 4.5 MB
- Category
- Music
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Full Unlock $4.99
- Copyright
- © 2026 Samuel Beseres