Comparison

120 Mandolin Chords Pro vs String Theory

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

Head to head
About

120 Mandolin Chords Pro

Master mandolin chords with a comprehensive learning and reference tool. Visualize finger positions, hear authentic sounds, and save custom chord sequences. Ideal for all skill levels, from beginners to advanced players.

Highlights
  • Multiple viewing options (photos, tabs, diagrams)
  • Authentic mandolin sound playback
  • Save favorite chords and sequences
  • Fast chord transposition
  • Left/right-handed switching
  • One-time purchase for unlimited access
Features
Read full description

Master mandolin chords quickly and confidently with 120 Mandolin Chords Pro, the ultimate learning and reference tool for mandolin players of all skill levels. It doesn't matter whether you're a beginner learning your first chords or an advanced musician refining your technique, this app gives you everything you need to play, create, and perform with ease! Why Musicians Love 120 Mandolin Chords Pro? + Multiple Viewing Options: See the correct finger position in photos, the chords as tabs and the fretboard diagrams for an instant visual understanding. + Authentic Mandolin Sound Playback: Hear how each chord truly sounds, recorded from an authentic instrument. Train your ear and ensure you're playing it right. + Save Your Favorite Chords: Build custom chord sequences for your favorite songs, save them, and play them anytime. + Transpose Fast: Adjust chords up or down to match your vocal range or song key. + Made For Everyone: Right-handed or left-handed? No problem. Switch instantly in settings. + One-Time Purchase: Just a single purchase gives you unlimited access to all 120 chords and powerful learning tools, forever. Perfect For: + Beginners who want to learn chords the right way from day one + Intermediate & advanced players who need a to a portable chord reference + Songwriters & composers exploring creative inspiration and experimentation + Teachers & students using the app as a quick visual learning aid Why You’ll Love It: Forget scrolling through random chord charts or unreliable online diagrams. Forget wondering if your finger placement is right. With 120 Mandolin Chords Pro, you’ll see, hear, and feel how every chord should sound, just like a pro. Don't let unclear chord charts hold you back any longer! Get 120 Mandolin Chords Pro today and unlock your full potential as a mandolin player!

About

String Theory

This app helps guitarists explore scales and chords with an interactive fretboard. It allows users to compare scales, test custom tunings, and record riff ideas. The tool is designed for practicing improvisation, learning theory, and saving musical inspiration.

Highlights
  • Interactive guitar fretboard with scale mapping
  • Scale and Chord Finder tools
  • Custom tunings with octave control
  • Riff recording and vault organization
  • Left-handed mode
  • Scale comparison overlay
Features
Read full description

String Theory is a focused guitar tool for exploring scales, visualizing the fretboard, matching chords, and capturing riff ideas without clutter. Build better fretboard awareness with an interactive scales map, compare two scales at once, test custom tunings, and find compatible chords in seconds. When inspiration hits, record the idea and save it to your riff vault with notes and playback. Features: • Interactive guitar fretboard with scale mapping • Major, harmonic minor, melodic minor, and pentatonic scale families • Scale Finder and Chord Finder tools • Chords-to-scales matching • Add a second scale overlay for comparison • Custom tunings with per-string octave control • Left-handed fretboard mode • Fullscreen fretboard view • Riff recording, playback, rename, share, and vault organization • Light/dark mode, 3 color themes, haptics, and a polished liquid glass interface Whether you’re practicing improvisation, learning theory, or saving new ideas, String Theory keeps the essential guitar tools in one fast, modern app.

Screenshots

120 Mandolin Chords Pro4 screens
String Theory4 screens

Verdict

The call

The clearest difference is rating: String Theory at 5.0 against 120 Mandolin Chords Pro's 3.0. String Theory also leads on price ($1.99 vs $3.99). 120 Mandolin Chords Pro's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 26.0). On ratings volume, ads, in-app purchases and monetization model 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

120 Mandolin Chords Pro costs $3.99 and String Theory $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

String Theory holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Scorecard4 real differences · 5 level
120 Mandolin Chords Pro versus String Theory: the parameters behind the verdict, then further details
Parameter120 Mandolin Chords ProString Theory
Price$3.99$1.99 — better
Rating3.0 (2 ratings)5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings2 — better1
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.0 — better26.0
Further details — not scored
Size24 MB10 MB
Age rating4+4+
DeveloperMax SchleeDANIEL NIKOLAS SZTURM

Customer experience

120 Mandolin Chords Pro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

String Theory

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

120 Mandolin Chords Pro

No in-app purchases

None

String Theory

No in-app purchases

Questions

Is 120 Mandolin Chords Pro free?
120 Mandolin Chords Pro costs $3.99, with no in-app purchases.
Is String Theory free?
String Theory costs $1.99, with no in-app purchases.
Which has better reviews, 120 Mandolin Chords Pro or String Theory?
String Theory is rated higher. 120 Mandolin Chords Pro averages 3.0 out of 5 from 2 ratings, while String Theory averages 5.0 from 1 ratings.
Do 120 Mandolin Chords Pro or String Theory have ads?
Neither 120 Mandolin Chords Pro nor String Theory shows ads.

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