Danley Tools vs Chord Trees
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Danley Tools
This app provides essential calculators and reference materials for audio engineering professionals and enthusiasts. It offers tools to assist with various calculations needed in sound system design and analysis.
- Audio engineering calculators
- Reference materials
- Sound system design tools
- Analysis assistance
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Danley calculators and reference
Chord Trees
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Chord Trees is an interactive harmony practice tool by Nathaniel School of Music for musicians who want to see, hear, and understand how chords connect. Build chord trees from notes, explore diatonic harmony, compare piano inversions and guitar fingerings, and loop arpeggios with real instrument sounds. The app is designed for students, songwriters, producers, and teachers who want a visual way to internalize chord progressions. FEATURES * Interactive chord tree visualization * Piano chord inversions and keyboard layouts * Guitar chord fingerings and voicing options * Diatonic mode with major-scale harmony and modes * Arpeggio loop playback for ear training * Instrument combinations including piano, guitar, strings, brass, synth, harp, and marimba * Beginner, intermediate, and advanced learning modes * Works without an account BY NATHANIEL SCHOOL OF MUSIC Built for practical music learning, chord fluency, and composition practice.
Screenshots
Verdict
The clearest difference is update cadence: Chord Trees at every 5 days against Danley Tools's every 36 months. Chord Trees also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Danley Tools ships an update every 36 months, Chord Trees every 5 days. Both last shipped on October 7, 2026.
| Parameter | Danley Tools | Chord Trees |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 36 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | sebastian rivas | Jason Zachariah |
In-app purchases
Danley Tools
No in-app purchases
Chord Trees
No in-app purchases
Questions
Is Danley Tools free?
Is Chord Trees free?
Do Danley Tools or Chord Trees have ads?
Which is updated more often, Danley Tools or Chord Trees?
Other comparisons
