# Pipedata vs Grey Chain ESS

Pipedata and Grey Chain ESS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 19, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Pipedata | Grey Chain ESS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (39 ratings)](https://appshunter.io/ios/app/pipedata/id967807250/reviews)** | — |
| Number of ratings | **39** | — |
| Positive reviews | 51.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | — |
| Size | 38 MB | 49 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Bennett](https://appshunter.io/developer/967758845) | [Grey Chain Technology Private Limited](https://appshunter.io/developer/1217003720) |

## What reviewers say

### Pipedata

[App page](https://appshunter.io/ios/app/pipedata/id967807250)

Access dimensional and weight data for over 70 common ASME piping components. Provides information in Metric, US Customary Units, and Inch/Fractions, with audited weights for valves, flanges, and other parts. Ensures accuracy and up-to-date information based on the latest ASME specifications.

**Highlights:** Dimensional data for 72+ ASME piping components, Weight information for valves and flanges, Supports Metric, US Customary Units, and Inch/Fractions, Based on latest ASME piping specifications, Fast and convenient interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Grey Chain ESS

[App page](https://appshunter.io/ios/app/grey-chain-ess/id1619989364)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pipedata free?

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

### Is Grey Chain ESS free?

Grey Chain ESS is free to download, with no in-app purchases.

### Do Pipedata or Grey Chain ESS have ads?

Neither Pipedata nor Grey Chain ESS shows ads.

### Which is updated more often, Pipedata or Grey Chain ESS?

Pipedata ships an update every 3 weeks, and Grey Chain ESS every 3 weeks. Most recently, Pipedata was updated on September 19, 2026 and Grey Chain ESS on September 14, 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.*