# TCI Bitacora vs Pipe Flow Gas Pipe Diameter

The clearest difference is in-app purchases: TCI Bitacora at none against Pipe Flow Gas Pipe Diameter's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Pipe Flow Gas Pipe Diameter sells 1 one-off in-app purchase. TCI Bitacora asks for nothing beyond the download.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | TCI Bitacora | Pipe Flow Gas Pipe Diameter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (5 ratings)](https://appshunter.io/ios/app/pipe-flow-gas-pipe-diameter/id1582795941/reviews)** |
| Number of ratings | — | **5** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | — | Free |
| Size | 45 MB | 67 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Armando Montellano](https://appshunter.io/developer/1455567990) | [Pipe Flow Software](https://appshunter.io/developer/1193064957) |

## What reviewers say

### TCI Bitacora

[App page](https://appshunter.io/ios/app/tci-bitacora/id1464209780)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pipe Flow Gas Pipe Diameter

[App page](https://appshunter.io/ios/app/pipe-flow-gas-pipe-diameter/id1582795941)

This utility app calculates the minimum internal pipe diameter for gas flow based on flow rate and pressure loss. It supports various calculation equations and offers comprehensive results with customizable units and databases for materials, fluids, and fittings.

**Highlights:** Calculates minimum internal pipe diameter, Supports multiple flow equations (AGA, Weymouth, etc.), Handles gas density changes with Ideal Gas Law, Includes databases for gases, pipe materials, and fittings, User-definable custom data, Imperial and Metric unit support, Generates Excel and PDF reports

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pipe Flow Gas Pipe Diameter | $4.99 | one-time |


## Frequently asked questions

### Is TCI Bitacora free?

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

### Is Pipe Flow Gas Pipe Diameter free?

Pipe Flow Gas Pipe Diameter is free to download, with in-app purchases available.

### Do TCI Bitacora or Pipe Flow Gas Pipe Diameter have ads?

Neither TCI Bitacora nor Pipe Flow Gas Pipe Diameter shows ads.

### Which is updated more often, TCI Bitacora or Pipe Flow Gas Pipe Diameter?

TCI Bitacora ships an update fortnightly, and Pipe Flow Gas Pipe Diameter fortnightly. Most recently, TCI Bitacora was updated on October 26, 2026 and Pipe Flow Gas Pipe Diameter on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*