# F Numbers vs Pipe Fitting

The clearest difference is in-app purchases: F Numbers at none against Pipe Fitting's 2. F Numbers also leads on ads (none vs shown) and rating (5.0 vs 4.6). Pipe Fitting's advantage is update cadence (every 5 days vs every 13 months) and ratings volume (116 vs 3). On price and device support there is nothing between them.

Both are free to download. Pipe Fitting sells 2 in-app purchases, starting at $4.99 per 7 days. F Numbers asks for nothing beyond the download.

F Numbers holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Pipe Fitting has 116 ratings behind it against 3, so its average is the more settled of the two.

F Numbers ships an update every 13 months, Pipe Fitting every 5 days. The most recent releases landed on September 15, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | F Numbers | Pipe Fitting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/f-numbers/id929309069/reviews)** | [4.6 (116 ratings)](https://appshunter.io/ios/app/pipe-fitting/id6743724584/reviews) |
| Number of ratings | 3 | **116** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 15 MB | 42 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ASMEIX CORPORATION](https://appshunter.io/developer/911716652) | [xNeat.com](https://appshunter.io/developer/327498295) |

## What reviewers say

### F Numbers

[App page](https://appshunter.io/ios/app/f-numbers/id929309069)

Quickly find filler metal groupings for welding procedures and performance qualifications. Access classifications with descriptions of intended use, based on ASME and AWS standards.

**Highlights:** Filler metal grouping lookup, Welding procedure qualification, Performance qualification data, Classification descriptions, ASME Section IX data, AWS standards data

**Features:** macOS Compatibility

**In-app purchases:** none


### Pipe Fitting

[App page](https://appshunter.io/ios/app/pipe-fitting/id6743724584)

This tool provides precise pipe layout calculations for professionals in welding and fabrication. It offers various offset and fitting calculators, along with data tools for custom angles and triangle solutions. Easily switch between imperial and metric units for field or shop use.

**Highlights:** Offset calculators (basic, rolling, parallel), Back-to-back fitting solutions, Elbow miter cut and triangle solver, Imperial and metric unit switching, Designed for iPhone and iPad

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pipe Fitting | $4.99 | per 7 days |
| Pipe Fitting | $39.99 | per year |


## Frequently asked questions

### Is F Numbers free?

F Numbers is free to download, with no in-app purchases.

### Is Pipe Fitting free?

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

### Which has better reviews, F Numbers or Pipe Fitting?

F Numbers is rated higher. F Numbers averages 5.0 out of 5 from 3 ratings, while Pipe Fitting averages 4.6 from 116 ratings.

### Do F Numbers or Pipe Fitting have ads?

Pipe Fitting shows ads; F Numbers does not.

### Which is updated more often, F Numbers or Pipe Fitting?

F Numbers ships an update every 13 months, and Pipe Fitting every 5 days. Most recently, F Numbers was updated on September 15, 2026 and Pipe Fitting on October 1, 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.*