# Flow Rate Conversion vs Pressure loss

The clearest difference is price: Pressure loss at Free against Flow Rate Conversion's $2.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Pressure loss is free to download; Flow Rate Conversion costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Flow Rate Conversion ships an update every 29 months, Pressure loss every 45 months. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Flow Rate Conversion | Pressure loss |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/flow-rate-conversion/id525300855/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 29 months** | Every 45 months |
| Monetization | Paid | — |
| Size | 1 MB | 8 MB |
| Requires iOS | 13 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [U-Tube Systems B.V.](https://appshunter.io/developer/1406001356) |

## What reviewers say

### Flow Rate Conversion

[App page](https://appshunter.io/ios/app/flow-rate-conversion/id525300855)

Easily convert between various units of flow rate, including volume-based, mass-based, and mole-based measurements. Essential for physics and engineering applications involving fluid dynamics and hydrometry.

**Highlights:** Volume flow rate conversion, Mass flow rate conversion, Mole-based flow rate conversion, Physics and engineering utility, Fluid dynamics calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### Pressure loss

[App page](https://appshunter.io/ios/app/pressure-loss-calc/id1406001357)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flow Rate Conversion free?

Flow Rate Conversion costs $2.99, with no in-app purchases.

### Is Pressure loss free?

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

### Do Flow Rate Conversion or Pressure loss have ads?

Neither Flow Rate Conversion nor Pressure loss shows ads.

### Which is updated more often, Flow Rate Conversion or Pressure loss?

Flow Rate Conversion ships an update every 29 months, and Pressure loss every 45 months. Most recently, Flow Rate Conversion was updated on October 1, 2026 and Pressure loss on October 7, 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.*