# Moon Phases vs WeldKit

The clearest difference is iOS requirement: WeldKit at 15.1 against Moon Phases's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Moon Phases sells 1 one-off in-app purchase and WeldKit sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Moon Phases ships an update monthly, WeldKit every 3 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Moon Phases | WeldKit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/weldkit-welding-calculators/id6761280549/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 35 MB | 47 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pocket Grove Ltd](https://appshunter.io/developer/954373766) | [Mark Laporte](https://appshunter.io/developer/1888573188) |

## What reviewers say

### Moon Phases

[App page](https://appshunter.io/ios/app/moon-phases-lunar-tracker/id6760960352)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Moon Phases Pro | $2.99 | one-time |


### WeldKit

[App page](https://appshunter.io/ios/app/weldkit-welding-calculators/id6761280549)

This app provides essential welding calculations and reference tools for professionals. It offers a free MIG calculator and unlocks seven additional calculators with a one-time purchase, eliminating subscriptions. Designed for speed and ease of use in shop or field environments, it helps users dial in settings and work with greater confidence.

**Highlights:** MIG, TIG, Stick, Flux-Core calculators, Plasma Cutting and Heat Input calculators, Weld Cost Estimator, Preheat Temperature Calculator, Fast, simple interface, Imperial and metric support, No accounts required

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WeldKit Pro | $9.99 | one-time |


## Frequently asked questions

### Is Moon Phases free?

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

### Is WeldKit free?

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

### Do Moon Phases or WeldKit have ads?

Both Moon Phases and WeldKit show ads.

### Which is updated more often, Moon Phases or WeldKit?

Moon Phases ships an update monthly, and WeldKit every 3 weeks. Most recently, Moon Phases was updated on October 24, 2026 and WeldKit on October 28, 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.*