# CWENG Welding Engineer Prep vs Trinity Theory Practice

The clearest difference is iOS requirement: Trinity Theory Practice at 13.0 against CWENG Welding Engineer Prep's 15.1. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. CWENG Welding Engineer Prep sells 9 in-app purchases, starting at $14.99 per 7 days and Trinity Theory Practice sells 6 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | CWENG Welding Engineer Prep | Trinity Theory Practice |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 weeks |
| Size | 51 MB | 100 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [YAUHEN BAHDANOVICH](https://appshunter.io/developer/1711932790) | [FLY SKY PTY LTD](https://appshunter.io/developer/1838696534) |

## What reviewers say

### CWENG Welding Engineer Prep

[App page](https://appshunter.io/ios/app/cweng-welding-engineer-prep/id6753874811)

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CWENG Weekly Full Access | $14.99 | per 7 days |
| CWENG Monthly Full Access | $34.99 | per month |
| CWENG Monthly Full Access | $34.99 | per month |
| CWENG Quarterly Full Access | $69.99 | per 3 months |
| CWENG Quarterly Full Access | $69.99 | per 3 months |
| CWENG Semiannual Full Access | $134.99 | per 6 months |
| CWENG Semiannual Full Access | $134.99 | per 6 months |
| CWENG Annual Full Access | $199.99 | per year |
| CWENG Annual Full Access | $199.99 | per year |


### 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 CWENG Welding Engineer Prep free?

CWENG Welding Engineer Prep is free to download, with in-app purchases available.

### Is Trinity Theory Practice free?

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

### Do CWENG Welding Engineer Prep or Trinity Theory Practice have ads?

Neither CWENG Welding Engineer Prep nor Trinity Theory Practice shows ads.

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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.*