# Trinity Theory Practice vs StaffReader

The clearest difference is update cadence: StaffReader at fortnightly against Trinity Theory Practice's every 6 weeks. Trinity Theory Practice's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Trinity Theory Practice sells 6 in-app purchases, starting at $2.99 per month and StaffReader sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Trinity Theory Practice ships an update every 6 weeks, StaffReader fortnightly. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Trinity Theory Practice | StaffReader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/staffreader-learn-sheet-music/id6774025780/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 100 MB | 27 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [FLY SKY PTY LTD](https://appshunter.io/developer/1838696534) | [Aliaksandr Kazarez](https://appshunter.io/developer/1875505970) |

## What reviewers say

### Trinity Theory Practice

[App page](https://appshunter.io/ios/app/trinity-theory-practice/id6773275447)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Weekly | $3.99 | per 7 days |
| Monthly | $7.99 | per month |
| Yearly | $12.99 | per year |
| 3 Months | $16.99 | per 3 months |
| Lifetime | $14.99 | one-time |


### StaffReader

[App page](https://appshunter.io/ios/app/staffreader-learn-sheet-music/id6774025780)

This app teaches music note reading using a structured, step-by-step method. It starts with a single note and gradually introduces new ones as you master each stage, ensuring a solid understanding before moving on. Designed for those who have struggled with other apps, it offers short, effective practice sessions.

**Highlights:** Landmark note method for gradual learning, One note at a time progression, 90% accuracy required to advance, Treble and bass clef tracks, Interval and melody reading, Offline functionality

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StaffReader Pro | $4.99 | one-time |


## Frequently asked questions

### Is Trinity Theory Practice free?

Trinity Theory Practice is free to download, with in-app purchases available.

### Is StaffReader free?

StaffReader is free to download, with in-app purchases available.

### Do Trinity Theory Practice or StaffReader have ads?

Neither Trinity Theory Practice nor StaffReader shows ads.

### Which is updated more often, Trinity Theory Practice or StaffReader?

Trinity Theory Practice ships an update every 6 weeks, and StaffReader fortnightly. Most recently, Trinity Theory Practice was updated on October 10, 2026 and StaffReader on October 4, 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.*