# Pipe Flow Wizard vs StemFox Scientific Calculator

The clearest difference is review sentiment: StemFox Scientific Calculator at 90% against Pipe Flow Wizard's 50%. StemFox Scientific Calculator also leads on rating (4.8 vs 4.6). Pipe Flow Wizard's advantage is ratings volume (103 vs 11) and iOS requirement (11.0 vs 15). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Pipe Flow Wizard sells 3 in-app purchases, starting at $9.99 per month and StemFox Scientific Calculator sells 6 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

StemFox Scientific Calculator holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Pipe Flow Wizard has 103 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 50% of Pipe Flow Wizard's written reviews are positive against 90% of StemFox Scientific Calculator's.

Pipe Flow Wizard ships an update every 2 months, StemFox Scientific Calculator every 3 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | Pipe Flow Wizard | StemFox Scientific Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (103 ratings)](https://appshunter.io/ios/app/pipe-flow-wizard-calculator/id1346589732/reviews) | **[4.8 (11 ratings)](https://appshunter.io/ios/app/stemfox-scientific-calculator/id1411592118/reviews)** |
| Number of ratings | **103** | 11 |
| Positive reviews | 50.0% of reviews | **90.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 73 MB | 24 MB |
| Requires iOS | **11.0** | 15 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pipe Flow Software](https://appshunter.io/developer/1193064957) | [Joshua Bryson](https://appshunter.io/developer/1367675392) |

## What reviewers say

### Pipe Flow Wizard

[App page](https://appshunter.io/ios/app/pipe-flow-wizard-calculator/id1346589732)

Calculate fluid flow rate and pressure loss in pipes. This app helps engineers determine pipe diameter, maximum pipe length, and friction loss for both liquid and gas flows, including fittings and elevation changes. Results can be shared as Excel or PDF reports.

**Highlights:** Flow rate calculations, Pressure loss calculations, Pipe diameter sizing, Maximum pipe length calculation, Liquid and gas flow support, Customizable material, fluid, and fitting databases, Imperial and metric unit support, Excel and PDF report generation

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pipe Flow Wizard - 1M | $9.99 | per month |
| Pipe Flow Wizard - 1Y | $19.99 | per year |
| Pipe Flow Wizard - 3M | $20.49 | per 3 months |


### StemFox Scientific Calculator

[App page](https://appshunter.io/ios/app/stemfox-scientific-calculator/id1411592118)

Streamline complex STEM calculations with a powerful calculator, textbook equation solver, and comprehensive unit converter. Designed for engineers, it reduces busywork and improves accuracy for homework and technical tasks.

**Highlights:** Advanced scientific calculator with 80+ functions, Textbook equation solver for any variable, Searchable equation database by chapter, Fast table lookup with linear interpolation, Comprehensive unit converter with 300+ conversions, Copy and paste functionality for values and equations

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly - Unlimited | $2.99 | per month |
| Yearly - Unlimited | $9.99 | per year |
| Donut | $0.99 | one-time |
| Drink | $2.99 | one-time |
| Taco | $4.99 | one-time |
| Pizza | $9.99 | one-time |


## Frequently asked questions

### Is Pipe Flow Wizard free?

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

### Is StemFox Scientific Calculator free?

StemFox Scientific Calculator is free to download, with in-app purchases available.

### Which has better reviews, Pipe Flow Wizard or StemFox Scientific Calculator?

StemFox Scientific Calculator is rated higher. Pipe Flow Wizard averages 4.6 out of 5 from 103 ratings, while StemFox Scientific Calculator averages 4.8 from 11 ratings.

### Do Pipe Flow Wizard or StemFox Scientific Calculator have ads?

Neither Pipe Flow Wizard nor StemFox Scientific Calculator shows ads.

### Which is updated more often, Pipe Flow Wizard or StemFox Scientific Calculator?

Pipe Flow Wizard ships an update every 2 months, and StemFox Scientific Calculator every 3 months. Most recently, Pipe Flow Wizard was updated on November 2, 2026 and StemFox Scientific Calculator on November 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.*