# PJFFfree vs ValvEye App

The clearest difference is in-app purchases: PJFFfree at none against ValvEye App's 12. ValvEye App's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 5 weeks). On price and device support there is nothing between them.

Both are free to download. ValvEye App sells 12 in-app purchases, starting at $0.29 per year. PJFFfree asks for nothing beyond the download.

PJFFfree ships an update every 5 weeks, ValvEye App every 2 weeks. The most recent releases landed on September 22, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | PJFFfree | ValvEye App |
| --- | --- | --- |
| 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 | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 7 MB | 83 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [sigeyosi kanenishi](https://appshunter.io/developer/629958778) | [Eugen Engledall](https://appshunter.io/developer/1856496813) |

## 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


### ValvEye App

[App page](https://appshunter.io/ios/app/valveye-app/id6755808491)

**Features:** macOS Compatibility

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro 12 Month | $0.29 | per year |
| Basic 12 Month | $0.99 | per year |
| Basic Plus 1 Month | $2.99 | per month |
| Pro 1 Month | $3.99 | per month |
| Basic Plus 3 Month | $6.99 | per 3 months |
| Basic Plus 12 Month | $7.99 | per year |
| Basic Plus 6 Month | $9.99 | per 6 months |
| Pro 3 Month | $9.99 | per 3 months |
| Basic Plus 12 Month | $12.99 | per year |
| Pro 12 Month | $12.99 | per year |
| Pro 6 Month | $14.90 | per 6 months |
| Pro 12 Month | $17.99 | per year |


## Frequently asked questions

### Is PJFFfree free?

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

### Is ValvEye App free?

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

### Do PJFFfree or ValvEye App have ads?

PJFFfree shows ads; ValvEye App does not.

### Which is updated more often, PJFFfree or ValvEye App?

PJFFfree ships an update every 5 weeks, and ValvEye App every 2 weeks. Most recently, PJFFfree was updated on September 22, 2026 and ValvEye App on September 18, 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.*