# Orifice Flow vs TC

The clearest difference is rating: TC at 5.0 against Orifice Flow's 4.0. TC also leads on update cadence (every 3 months vs every 12 months) and price ($1.99 vs $3.99). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

Orifice Flow costs $3.99 and TC $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TC holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Orifice Flow ships an update every 12 months, TC every 3 months. The most recent releases landed on October 11, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Orifice Flow | TC |
| --- | --- | --- |
| Price | $3.99 | **$1.99** |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/orifice-flow/id479581349/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tc-rtd-reference/id6504454500/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 months** |
| Monetization | Paid | Paid |
| Size | 1 MB | 12 MB |
| Requires iOS | 14.3 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kaup Shenoy Associates](https://appshunter.io/developer/460148822) | [立娜 王](https://appshunter.io/developer/1761096632) |

## What reviewers say

### Orifice Flow

[App page](https://appshunter.io/ios/app/orifice-flow/id479581349)

Calculate fluid flow rates in pipes and conduits using orifice plates. Supports common industrial fluids and custom fluid properties, with adjustable units and orifice types. Ideal for engineers and designers.

**Highlights:** Fluid flow rate computation, Supports 15 common industrial fluids, Custom fluid property input and saving, Multiple orifice plate types, Adjustable units (SI/USCS), Detailed computation model documentation

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

**In-app purchases:** none


### TC

[App page](https://appshunter.io/ios/app/tc-rtd-reference/id6504454500)

This utility app provides quick and accurate conversions between resistance, potential, and temperature for various thermocouples and RTDs. It supports offline use, temperature recording with export, and offers an intuitive interface for field technicians and engineers.

**Highlights:** Thermocouple and RTD conversion, Supports multiple sensor types, Offline functionality, Temperature recording and charting, Export data to Excel, Intuitive user interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Orifice Flow free?

Orifice Flow costs $3.99, with no in-app purchases.

### Is TC free?

TC costs $1.99, with no in-app purchases.

### Which has better reviews, Orifice Flow or TC?

TC is rated higher. Orifice Flow averages 4.0 out of 5 from 1 ratings, while TC averages 5.0 from 1 ratings.

### Do Orifice Flow or TC have ads?

Neither Orifice Flow nor TC shows ads.

### Which is updated more often, Orifice Flow or TC?

Orifice Flow ships an update every 12 months, and TC every 3 months. Most recently, Orifice Flow was updated on October 11, 2026 and TC on October 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.*