# Calculator + vs Ohms Law

The clearest difference is in-app purchases: Ohms Law at none against Calculator +'s 12. Ohms Law also leads on iOS requirement (12.0 vs 16.4). Calculator +'s advantage is update cadence (every 5 days vs every 16 months) and ratings volume (10K vs 7). On price, ads and device support there is nothing between them.

Both are free to download. Calculator + sells 12 in-app purchases, starting at $4.99 per month. Ohms Law asks for nothing beyond the download.

Calculator + holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Calculator + has 10K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 85% of Calculator +'s written reviews are positive against 70% of Ohms Law's.

Calculator + ships an update every 5 days, Ohms Law every 16 months. The most recent releases landed on October 25, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Calculator + | Ohms Law |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (10K ratings)](https://appshunter.io/ios/app/calculator-plus/id351815470/reviews)** | [4.3 (7 ratings)](https://appshunter.io/ios/app/ohms-law/id590727537/reviews) |
| Number of ratings | **10K** | 7 |
| Positive reviews | **84.9% of reviews** | 70.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Every 16 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 50 MB | 12 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [xNeat.com](https://appshunter.io/developer/327498295) | [Pro Certs Software Ltd](https://appshunter.io/developer/444429696) |

## What reviewers say

### Calculator +

[App page](https://appshunter.io/ios/app/calculator-plus/id351815470)

This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.

**Highlights:** Free basic and scientific calculator, Intuitive interface with equation and result display, Fraction and percent support, Advanced editing capabilities, Polynomial and linear equation solver, Graphing calculator, Unit conversion and geometric calculators

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scientific Calculator | $4.99 | per month |
| Calculator | $39.99 | per year |
| Linear Calculator | $2.99 | one-time |
| Factoring Calculator | $2.99 | one-time |
| Handwriting Calculator | $2.99 | one-time |
| Currency Converter | $2.99 | one-time |
| Themes Pack | $2.99 | one-time |
| Graphing Calculator | $3.99 | one-time |
| Fraction Calculator | $3.99 | one-time |
| Scientific Calculator | $4.99 | one-time |
| Calculator Plus | $4.99 | one-time |
| Calculator | $16.99 | one-time |

**What reviewers like**

- 👍 Great features and easy to use
- 👍 Efficient and quick
- 👍 Versatile, functional calculator
- 👍 Fantastic, easy to use app
- 👍 Awesome calculator app

**What reviewers complain about**

- 🐛 New updated layout is awful
- 🐛 App is now terrible
- 🔒 Paying customer screwed over by update
- 🔒 Now timed trial, no free w/ads version
- 🔒 Not honest

**Reported bugs**

- Fraction calculator has TWO subtraction buttons and NO division button
- Decimals seem to be changed to fraction with no apparent way of changing it back
- Functionality is dropped by forcing you to the main menu every time you open it
- Currency converter broken
- Login screen freezes

**Requested features**

- Add mod function
- Add commas
- Add 1/x function
- Support for Retina Display
- Add number 4 with two lines


### Ohms Law

[App page](https://appshunter.io/ios/app/ohms-law/id590727537)

This utility app calculates voltage, current, resistance, and power using Ohm's Law. Simply input any two values, and the app will compute the remaining two, providing a comprehensive tool for electrical calculations.

**Highlights:** Calculate Voltage, Calculate Current, Calculate Resistance, Calculate Power, Input two values to find others

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculator + free?

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

### Is Ohms Law free?

Ohms Law is free to download, with no in-app purchases.

### Which has better reviews, Calculator + or Ohms Law?

Calculator + is rated higher. Calculator + averages 4.6 out of 5 from 10K ratings, while Ohms Law averages 4.3 from 7 ratings.

### Do Calculator + or Ohms Law have ads?

Both Calculator + and Ohms Law show ads.

### Which is updated more often, Calculator + or Ohms Law?

Calculator + ships an update every 5 days, and Ohms Law every 16 months. Most recently, Calculator + was updated on October 25, 2026 and Ohms Law on October 23, 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.*