# Chord Training Assistant vs 国力公证

The clearest difference is in-app purchases: 国力公证 at none against Chord Training Assistant's 3. Chord Training Assistant's advantage is update cadence (every 2 weeks vs every 6 months) and iOS requirement (9.0 vs 12.0). On price, ads and device support there is nothing between them.

Both are free to download. Chord Training Assistant sells 3 in-app purchases, starting at $1.99 per month. 国力公证 asks for nothing beyond the download.

Chord Training Assistant ships an update every 2 weeks, 国力公证 every 6 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Chord Training Assistant | 国力公证 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chord-training-assistant/id1558325872/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 months |
| Monetization | Freemium | — |
| Size | 40 MB | 49 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [世杰 宋](https://appshunter.io/developer/1558135988) | [四川省成都市国力公证处](https://appshunter.io/developer/1700856381) |

## What reviewers say

### Chord Training Assistant

[App page](https://appshunter.io/ios/app/chord-training-assistant/id1558325872)

This app helps musicians learn and practice chords with a vast library of over 800 options. It includes a metronome, practice history tracking, and a chord library, with a VIP plan offering unlimited practice and an ad-free experience.

**Highlights:** Supports 800+ chords, Built-in metronome, Practice history and statistics, Comprehensive chord library, Dark mode support

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $1.99 | per month |
| Yearly Plan | $13.49 | per year |
| Permanent VIP | $19.99 | one-time |


### 国力公证

[App page](https://appshunter.io/ios/app/id6457261443)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chord Training Assistant free?

Chord Training Assistant is free to download, with in-app purchases available.

### Is 国力公证 free?

国力公证 is free to download, with no in-app purchases.

### Do Chord Training Assistant or 国力公证 have ads?

Neither Chord Training Assistant nor 国力公证 shows ads.

### Which is updated more often, Chord Training Assistant or 国力公证?

Chord Training Assistant ships an update every 2 weeks, and 国力公证 every 6 months. Most recently, Chord Training Assistant was updated on November 3, 2026 and 国力公证 on November 3, 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.*