# Number System Trainer vs GraceChords

The clearest difference is monetization model: GraceChords at free against Number System Trainer's free with in-app purchases. On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Number System Trainer against 5.0 for GraceChords. Both are backed by a comparable volume of ratings — 10 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Number System Trainer ships an update weekly, GraceChords every 9 days. The most recent releases landed on October 18, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Number System Trainer | GraceChords |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (10 ratings)](https://appshunter.io/ios/app/number-system-trainer/id6786437503/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/gracechords/id6787127446/reviews) |
| Number of ratings | **10** | 5 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 35 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brandon Oaks](https://appshunter.io/developer/6786437505) | [Ryan William Moore](https://appshunter.io/developer/6787127448) |

## What reviewers say

### Number System Trainer

[App page](https://appshunter.io/ios/app/number-system-trainer/id6786437503)

Learn and master the Nashville Number System for music. This app offers interactive modules to help musicians of all levels understand chord progressions, transpose songs, and improve their ear training. It's designed for quick learning and on-the-fly musical communication.

**Highlights:** Interactive learning modules, Chord reading and identification, Instant transposition, Ear training exercises, Visual chord shapes, Circle of 4ths & 5ths reference

**Features:** macOS Compatibility, Family Sharing

**In-app purchases:** none


### GraceChords

[App page](https://appshunter.io/ios/app/gracechords/id6787127446)

This app provides worship leaders and musicians with tools for preparing and performing music. It features adjustable chord charts, setlist creation, live lyric following, and a built-in Bible reader. It also includes essential practice tools like a tuner and metronome.

**Highlights:** Adjustable chord-over-lyric charts, One-tap transposition, Setlist creation and management, Live lyric following, Built-in Bible reader, Guitar tuner, metronome, pitch pipe, capo calculator, Printable songbook export

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

**In-app purchases:** none


## Frequently asked questions

### Is Number System Trainer free?

Number System Trainer is free to download, with no in-app purchases.

### Is GraceChords free?

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

### Which has better reviews, Number System Trainer or GraceChords?

Number System Trainer and GraceChords are both rated 5.0 out of 5 on the App Store, from 10 and 5 ratings respectively.

### Do Number System Trainer or GraceChords have ads?

Neither Number System Trainer nor GraceChords shows ads.

### Which is updated more often, Number System Trainer or GraceChords?

Number System Trainer ships an update weekly, and GraceChords every 9 days. Most recently, Number System Trainer was updated on October 18, 2026 and GraceChords on October 13, 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.*