# Pipe Guide Calculator vs FlowLine Isometric

The clearest difference is update cadence: FlowLine Isometric at every 6 weeks against Pipe Guide Calculator's every 12 months. Pipe Guide Calculator's advantage is iOS requirement (15.6 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Pipe Guide Calculator ships an update every 12 months, FlowLine Isometric every 6 weeks. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Pipe Guide Calculator | FlowLine Isometric |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/pipe-guide-calculator/id1076615988/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 19 MB | 23 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [IT Welding Sweden AB](https://appshunter.io/developer/1076615987) | [Joshua Parkin](https://appshunter.io/developer/1495725832) |

## What reviewers say

### Pipe Guide Calculator

[App page](https://appshunter.io/ios/app/pipe-guide-calculator/id1076615988)

This utility app provides essential calculations for pipe fitting, eliminating the need for reference tables. Designed by a welder for welders, it aims to save time and streamline work processes.

**Highlights:** All necessary computations in one place, Useful calculations for pipe fitting, Eliminates the need for tables, Saves time on the job, Designed for welders

**Features:** macOS Compatibility

**In-app purchases:** none


### FlowLine Isometric

[App page](https://appshunter.io/ios/app/flowline-isometric/id6762237039)

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

**In-app purchases:** none


## Frequently asked questions

### Is Pipe Guide Calculator free?

Pipe Guide Calculator is free to download, with no in-app purchases.

### Is FlowLine Isometric free?

FlowLine Isometric is free to download, with no in-app purchases.

### Do Pipe Guide Calculator or FlowLine Isometric have ads?

Neither Pipe Guide Calculator nor FlowLine Isometric shows ads.

### Which is updated more often, Pipe Guide Calculator or FlowLine Isometric?

Pipe Guide Calculator ships an update every 12 months, and FlowLine Isometric every 6 weeks. Most recently, Pipe Guide Calculator was updated on October 4, 2026 and FlowLine Isometric on October 16, 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.*