# Theory Forge vs Trinity Theory Practice

The clearest difference is in-app purchases: Theory Forge at none against Trinity Theory Practice's 6. Trinity Theory Practice's advantage is iOS requirement (13.0 vs 15.0). On price, ads 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. Theory Forge asks for nothing beyond the download.

## The numbers

| Metric | Theory Forge | Trinity Theory Practice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/theory-forge/id6762159961/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 weeks |
| Monetization | Free | — |
| Size | 18 MB | 100 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DANIEL WADE IVERS](https://appshunter.io/developer/1893173294) | [FLY SKY PTY LTD](https://appshunter.io/developer/1838696534) |

## What reviewers say

### Theory Forge

[App page](https://appshunter.io/ios/app/theory-forge/id6762159961)

This app offers focused repetition drills to help musicians of all levels master music theory fundamentals. It covers intervals, scales, chords, and staff reading with progress tracking and achievement badges.

**Highlights:** Interval drills, Scale identification, Triad construction, Staff reading practice, Speed and mixed drills, Progress tracking, Achievement badges

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Theory Forge free?

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

### Is Trinity Theory Practice free?

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

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

Neither Theory Forge nor Trinity Theory Practice shows ads.

---

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