# PreHeat vs Welding Inspector CWI Prep

PreHeat and Welding Inspector CWI Prep are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. PreHeat sells 1 one-off in-app purchase and Welding Inspector CWI Prep sells 4 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | PreHeat | Welding Inspector CWI Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Size | 4 MB | 25 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shabbir Ahmed](https://appshunter.io/developer/1083166021) | [FLY SKY PTY LTD](https://appshunter.io/developer/1838696534) |

## What reviewers say

### PreHeat

[App page](https://appshunter.io/ios/app/preheat/id6461216985)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Non Consumable Subscription | $3.99 | one-time |


### Welding Inspector CWI Prep

[App page](https://appshunter.io/ios/app/welding-inspector-cwi-prep/id6778984074)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Welding CWI Weekly | $6.99 | per 7 days |
| Welding CWI Monthly | $16.99 | per month |
| Welding CWI Yearly | $39.99 | per year |
| Welding CWI Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is PreHeat free?

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

### Is Welding Inspector CWI Prep free?

Welding Inspector CWI Prep is free to download, with in-app purchases available.

### Do PreHeat or Welding Inspector CWI Prep have ads?

Neither PreHeat nor Welding Inspector CWI Prep 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.*