# Danley Tools vs Chord Trees

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.

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.

## The numbers

| Metric | Danley Tools | Chord Trees |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/danley-tools/id1538456260/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 7 MB | 3 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [sebastian rivas](https://appshunter.io/developer/506708461) | [Jason Zachariah](https://appshunter.io/developer/1896513710) |

## What reviewers say

### Danley Tools

[App page](https://appshunter.io/ios/app/danley-tools/id1538456260)

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.

**Highlights:** Audio engineering calculators, Reference materials, Sound system design tools, Analysis assistance

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Chord Trees

[App page](https://appshunter.io/ios/app/chord-trees/id6772963450)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Danley Tools free?

Danley Tools is free to download, with no in-app purchases.

### Is Chord Trees free?

Chord Trees is free to download, with no in-app purchases.

### Do Danley Tools or Chord Trees have ads?

Neither Danley Tools nor Chord Trees shows ads.

### Which is updated more often, Danley Tools or Chord Trees?

Danley Tools ships an update every 36 months, and Chord Trees every 5 days. Most recently, Danley Tools was updated on October 7, 2026 and Chord Trees on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*