# ElbowData vs HDD Report Builder

The clearest difference is in-app purchases: HDD Report Builder at none against ElbowData's 1. HDD Report Builder also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.1). On price, update cadence and device support there is nothing between them.

Both are free to download. ElbowData sells 1 one-off in-app purchase. HDD Report Builder asks for nothing beyond the download.

ElbowData ships an update every 2 months, HDD Report Builder every 5 weeks. The most recent releases landed on September 22, 2026 and June 2, 2026 respectively.

## The numbers

| Metric | ElbowData | HDD Report Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/elbowdata/id1460558732/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Ad-supported | — |
| Size | 42 MB | 80 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ELM-web](https://appshunter.io/developer/1460558731) | [Einlogica Solutions Private Limited](https://appshunter.io/developer/1762129938) |

## What reviewers say

### ElbowData

[App page](https://appshunter.io/ios/app/elbowdata/id1460558732)

This utility app helps industrial piping professionals quickly visualize pipe and elbow dimensions based on ISO/ASME standards. It offers instant calculations for diameter, angle, and radius, with support for various elbow formats and segmented elbows.

**Highlights:** Pipe and elbow dimension visualization, ISO/ASME standard compliance, Diameter, angle, radius calculation, 2D/3D/5D elbow formats, Segmented elbow generation, PDF abacuses and isometric sheets, Inch/millimeter conversion

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium version | $1.99 | one-time |


### HDD Report Builder

[App page](https://appshunter.io/ios/app/hdd-report-builder/id6753929129)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ElbowData free?

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

### Is HDD Report Builder free?

HDD Report Builder is free to download, with no in-app purchases.

### Do ElbowData or HDD Report Builder have ads?

ElbowData shows ads; HDD Report Builder does not.

### Which is updated more often, ElbowData or HDD Report Builder?

ElbowData ships an update every 2 months, and HDD Report Builder every 5 weeks. Most recently, ElbowData was updated on September 22, 2026 and HDD Report Builder on June 2, 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.*