# PJFFfree vs Flm∴S アイソメmaster

The clearest difference is review sentiment: PJFFfree at 100% against Flm∴S アイソメmaster's 0%. Flm∴S アイソメmaster's advantage is ads (none vs shown) and update cadence (every 2 days vs every 5 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

PJFFfree ships an update every 5 weeks, Flm∴S アイソメmaster every 2 days. Both last shipped on October 8, 2026.

## The numbers

| Metric | PJFFfree | Flm∴S アイソメmaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pjfffree/id629958775/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | Ad-supported | **Free** |
| Size | 7 MB | 39 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [sigeyosi kanenishi](https://appshunter.io/developer/629958778) | [shinji miyagawa](https://appshunter.io/developer/6791523364) |

## What reviewers say

### PJFFfree

[App page](https://appshunter.io/ios/app/pjfffree/id629958775)

This app serves as a manual for piping parts, focusing on Japanese specifications. It lists commonly used items based on manufacturer data and public dimension tables, with all measurements in millimeters.

**Highlights:** Piping parts manual, Japanese specifications, Commonly used parts listing, Manufacturer data integration, Millimeter measurements, JIS standards compliance

**Features:** macOS Compatibility

**In-app purchases:** none


### Flm∴S アイソメmaster

[App page](https://appshunter.io/ios/app/flms-master/id6791523361)

This app simplifies the creation of piping isometric drawings (spool drawings) for construction and fabrication sites. It replaces manual drafting and CAD software with a tablet-based tool, allowing users to easily place symbols and automatically calculate dimensions for efficient workflow.

**Highlights:** Piping and fitting symbols, Automatic cut length calculation, Part numbering and material lists, Vector PDF output for site use, Underlay image support, Project saving and sharing

**In-app purchases:** none


## Frequently asked questions

### Is PJFFfree free?

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

### Is Flm∴S アイソメmaster free?

Flm∴S アイソメmaster is free to download, with no in-app purchases.

### Do PJFFfree or Flm∴S アイソメmaster have ads?

PJFFfree shows ads; Flm∴S アイソメmaster does not.

### Which is updated more often, PJFFfree or Flm∴S アイソメmaster?

PJFFfree ships an update every 5 weeks, and Flm∴S アイソメmaster every 2 days. Most recently, PJFFfree was updated on October 8, 2026 and Flm∴S アイソメmaster on October 8, 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.*