# Ohms Law Calc. vs Pipe Flow Liquid Pipe Diameter

The clearest difference is ads: Pipe Flow Liquid Pipe Diameter at none against Ohms Law Calc.'s shown. Pipe Flow Liquid Pipe Diameter also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (11.0 vs 17.6). Ohms Law Calc.'s advantage is ratings volume (1.3K vs 5). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Ohms Law Calc. sells 1 one-off in-app purchase and Pipe Flow Liquid Pipe Diameter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Ohms Law Calc. against 4.6 for Pipe Flow Liquid Pipe Diameter. That said, the two scores are not equally well evidenced: Ohms Law Calc. has 1.3K ratings behind it against 5, so its average is the more settled of the two.

Ohms Law Calc. ships an update every 2 months, Pipe Flow Liquid Pipe Diameter fortnightly. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ohms Law Calc. | Pipe Flow Liquid Pipe Diameter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.3K ratings)](https://appshunter.io/ios/app/ohms-law-calc/id491898006/reviews)** | [4.6 (5 ratings)](https://appshunter.io/ios/app/pipe-flow-liquid-pipe-diameter/id1582795461/reviews) |
| Number of ratings | **1.3K** | 5 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 59 MB | 67 MB |
| Requires iOS | 17.6 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Pipe Flow Software](https://appshunter.io/developer/1193064957) |

## What reviewers say

### Ohms Law Calc.

[App page](https://appshunter.io/ios/app/ohms-law-calc/id491898006)

This app provides a comprehensive suite of electrical calculations, including Ohm's Law, voltage drop, wire sizing, and impedance. It also offers numerous converters for various electrical units and parameters, aiding in circuit design and analysis.

**Highlights:** Ohm's Law calculations, Voltage drop calculator, Wire size calculator, Impedance calculations (R, L, C), Electrical unit converters, Power and current conversions, Circuit design tools

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ohms Law Calc. | $3.99 | one-time |

**What reviewers like**

- 🚀 Great value
- 🚀 Works perfectly
- 🚀 Fantastic app
- 👍 Best thing since sliced bread
- 🚀 Useful for electrical work

**What reviewers complain about**

- 👎 Have to pay again for an app already purchased
- 👎 Not easy to use
- 🐛 Paid but not unlocked, no response from developer
- 👎 Annoying pop-ups
- 🐛 Keeps shutting down

**Reported bugs**

- Paid version not unlocking
- Repeatedly prompting for payment after already paid
- Keyboard overlaying results making it difficult to see

**Requested features**

- Add more electrical conversions and calculations
- Add ability to input voltage and resistance to get amps and watts
- Add kVA, rms, and other popular needed conversions


### Pipe Flow Liquid Pipe Diameter

[App page](https://appshunter.io/ios/app/pipe-flow-liquid-pipe-diameter/id1582795461)

This app calculates the minimum internal pipe diameter required for a specific flow rate and maximum pressure loss. It offers comprehensive results, customizable databases for materials and fluids, and generates professional reports.

**Highlights:** Pipe diameter calculation, Friction loss calculation, Customizable material and fluid databases, Imperial and Metric unit support, Professional Excel and PDF reports, Results verification against published data

**Features:** Vision Pro support

**In-app purchases (1)**

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


## Frequently asked questions

### Is Ohms Law Calc. free?

Ohms Law Calc. is free to download, with in-app purchases available.

### Is Pipe Flow Liquid Pipe Diameter free?

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

### Which has better reviews, Ohms Law Calc. or Pipe Flow Liquid Pipe Diameter?

Ohms Law Calc. is rated higher. Ohms Law Calc. averages 4.7 out of 5 from 1.3K ratings, while Pipe Flow Liquid Pipe Diameter averages 4.6 from 5 ratings.

### Do Ohms Law Calc. or Pipe Flow Liquid Pipe Diameter have ads?

Ohms Law Calc. shows ads; Pipe Flow Liquid Pipe Diameter does not.

### Which is updated more often, Ohms Law Calc. or Pipe Flow Liquid Pipe Diameter?

Ohms Law Calc. ships an update every 2 months, and Pipe Flow Liquid Pipe Diameter fortnightly. Most recently, Ohms Law Calc. was updated on October 27, 2026 and Pipe Flow Liquid Pipe Diameter on October 24, 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.*