# Flat Metal Patterns vs BuilderFax By Lumber

The clearest difference is rating: BuilderFax By Lumber at 5.0 against Flat Metal Patterns's 4.4. BuilderFax By Lumber also leads on in-app purchases (none vs 3) and update cadence (every 10 days vs every 5 weeks). Flat Metal Patterns's advantage is ratings volume (25 vs 7) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Flat Metal Patterns sells 3 in-app purchases, starting at $7.99 per month. BuilderFax By Lumber asks for nothing beyond the download.

BuilderFax By Lumber holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 25 and 7 respectively.

Flat Metal Patterns ships an update every 5 weeks, BuilderFax By Lumber every 10 days. The most recent releases landed on September 16, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Flat Metal Patterns | BuilderFax By Lumber |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (25 ratings)](https://appshunter.io/ios/app/flat-metal-patterns/id1481867517/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/builderfax-by-lumber/id6754037484/reviews)** |
| Number of ratings | **25** | 7 |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 10 days** |
| Monetization | Freemium | **Free** |
| Size | 135 MB | 68 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ignacio Renteria-Molina](https://appshunter.io/developer/1481867516) | [Lumberfi Inc](https://appshunter.io/developer/1714403069) |

## What reviewers say

### Flat Metal Patterns

[App page](https://appshunter.io/ios/app/flat-metal-patterns/id1481867517)

This app simplifies metal pattern creation with precise mathematical calculations, saving time and reducing errors compared to manual methods. It offers various pattern types, unit conversions, and smart calculation features for both experienced professionals and beginners.

**Highlights:** Automated pattern calculation, 20+ different pattern types, Diameter-Circumference conversion, Pipe and insulation reference tables, Smart calculator for fractions/decimals, Scale feature for large patterns

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One month subscription | $7.99 | per month |
| 3 months subscription | $19.99 | per 3 months |
| 6 month subscription | $38.99 | per 6 months |


### BuilderFax By Lumber

[App page](https://appshunter.io/ios/app/builderfax-by-lumber/id6754037484)

Securely store, manage, and share your professional certifications and licenses. Upload documents, categorize them for easy access, and instantly share verified credentials via QR code or SMS link for on-site proof.

**Highlights:** Add and manage certifications, Categorize professional documents, Share verified credentials instantly, QR code and SMS link sharing, Secure verification page

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

**In-app purchases:** none


## Frequently asked questions

### Is Flat Metal Patterns free?

Flat Metal Patterns is free to download, with in-app purchases available.

### Is BuilderFax By Lumber free?

BuilderFax By Lumber is free to download, with no in-app purchases.

### Which has better reviews, Flat Metal Patterns or BuilderFax By Lumber?

BuilderFax By Lumber is rated higher. Flat Metal Patterns averages 4.4 out of 5 from 25 ratings, while BuilderFax By Lumber averages 5.0 from 7 ratings.

### Do Flat Metal Patterns or BuilderFax By Lumber have ads?

Neither Flat Metal Patterns nor BuilderFax By Lumber shows ads.

### Which is updated more often, Flat Metal Patterns or BuilderFax By Lumber?

Flat Metal Patterns ships an update every 5 weeks, and BuilderFax By Lumber every 10 days. Most recently, Flat Metal Patterns was updated on September 16, 2026 and BuilderFax By Lumber on September 13, 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.*