# Piping DataBase vs HydroCalc Basic

The clearest difference is price: HydroCalc Basic at Free against Piping DataBase's $3.99. HydroCalc Basic also leads on update cadence (every 11 days vs every 4 months). Piping DataBase's advantage is in-app purchases (none vs 1) and iOS requirement (8.0 vs 15.1). On ads and device support there is nothing between them.

HydroCalc Basic is free to download; Piping DataBase costs $3.99 up front. HydroCalc Basic sells 1 one-off in-app purchase. Piping DataBase asks for nothing beyond the download.

Piping DataBase ships an update every 4 months, HydroCalc Basic every 11 days. The most recent releases landed on October 1, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Piping DataBase | HydroCalc Basic |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/piping-database-schedule/id355465488/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 11 days** |
| Monetization | Paid | — |
| Size | 3 MB | 35 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Radin Alcira](https://appshunter.io/developer/352538434) | [Transparent Blue Water LLC](https://appshunter.io/developer/1847968351) |

## What reviewers say

### Piping DataBase

[App page](https://appshunter.io/ios/app/piping-database-schedule/id355465488)

This mobile reference tool provides essential data for piping engineers and professionals in various industries. It offers standard dimensions for steel and stainless steel pipes, supporting both US Customary and SI units.

**Highlights:** Standard pipe dimensions (OD, wall thickness, mass), Welded and seamless steel pipes, Wrought stainless steel pipes, Supports pipe sizes up to 80", Interchangeable US Customary and SI Units, Includes all Schedule and Identifications

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

**In-app purchases:** none


### HydroCalc Basic

[App page](https://appshunter.io/ios/app/hydrocalc-basic/id6752577110)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Flow Units & Ad-Free | $1.99 | one-time |


## Frequently asked questions

### Is Piping DataBase free?

Piping DataBase costs $3.99, with no in-app purchases.

### Is HydroCalc Basic free?

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

### Do Piping DataBase or HydroCalc Basic have ads?

Neither Piping DataBase nor HydroCalc Basic shows ads.

### Which is updated more often, Piping DataBase or HydroCalc Basic?

Piping DataBase ships an update every 4 months, and HydroCalc Basic every 11 days. Most recently, Piping DataBase was updated on October 1, 2026 and HydroCalc Basic on October 4, 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.*