# SCR MAXFLO™ vs Linear Interpolation Master

The clearest difference is in-app purchases: SCR MAXFLO™ at none against Linear Interpolation Master's 3. SCR MAXFLO™ also leads on ads (none vs shown). Linear Interpolation Master's advantage is ratings volume (176 vs 5) and update cadence (every 5 months vs every 11 months). On price and rating there is nothing between them.

Both are free to download. Linear Interpolation Master sells 3 one-off in-app purchases. SCR MAXFLO™ asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for SCR MAXFLO™ against 4.7 for Linear Interpolation Master. That said, the two scores are not equally well evidenced: Linear Interpolation Master has 176 ratings behind it against 5, so its average is the more settled of the two.

SCR MAXFLO™ ships an update every 11 months, Linear Interpolation Master every 5 months. The most recent releases landed on September 9, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | SCR MAXFLO™ | Linear Interpolation Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (5 ratings)](https://appshunter.io/ios/app/scr-maxflo/id1077499630/reviews) | **[4.7 (176 ratings)](https://appshunter.io/ios/app/linear-interpolation-master/id1433976994/reviews)** |
| Number of ratings | 5 | **176** |
| Positive reviews | — | 62.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 5 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 16 MB |
| Requires iOS | 16.6 | **11.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Southwire Company](https://appshunter.io/developer/440338423) | [VERVE TECHNOLOGIES PTY. LTD.](https://appshunter.io/developer/582523354) |

## What reviewers say

### SCR MAXFLO™

[App page](https://appshunter.io/ios/app/scr-maxflo/id1077499630)

This app calculates pressure drop, fluid velocity, Reynold's number, and friction factor for liquids and gases. It allows users to create custom projects, manage pipes, fluids, and fittings, and supports both metric and imperial units for efficient on-site work.

**Highlights:** Pressure drop calculation, Fluid velocity calculation, Reynold's number calculation, Friction factor calculation, Custom project creation, Pipe, fluid, and fitting management, Metric and imperial unit support

**Features:** macOS Compatibility

**In-app purchases:** none


### Linear Interpolation Master

[App page](https://appshunter.io/ios/app/linear-interpolation-master/id1433976994)

This tool simplifies linear interpolation calculations for industrial commissioning engineers. It features large, easily readable numbers for field use and allows for quick swapping of coordinate systems, such as converting between 4-20mA and 0-100% scales.

**Highlights:** Large number display for field visibility, Quickly swap X and Y coordinates, 4-20mA to 0-100% conversion, 0-100% to 4-20mA conversion

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Generous Tip | $2.99 | one-time |
| Massive Tip | $3.99 | one-time |
| Amazing Tip | $4.99 | one-time |


## Frequently asked questions

### Is SCR MAXFLO™ free?

SCR MAXFLO™ is free to download, with no in-app purchases.

### Is Linear Interpolation Master free?

Linear Interpolation Master is free to download, with in-app purchases available.

### Which has better reviews, SCR MAXFLO™ or Linear Interpolation Master?

Linear Interpolation Master is rated higher. SCR MAXFLO™ averages 4.6 out of 5 from 5 ratings, while Linear Interpolation Master averages 4.7 from 176 ratings.

### Do SCR MAXFLO™ or Linear Interpolation Master have ads?

Linear Interpolation Master shows ads; SCR MAXFLO™ does not.

### Which is updated more often, SCR MAXFLO™ or Linear Interpolation Master?

SCR MAXFLO™ ships an update every 11 months, and Linear Interpolation Master every 5 months. Most recently, SCR MAXFLO™ was updated on September 9, 2026 and Linear Interpolation Master on September 22, 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.*