# Calculator + vs PowerOne calculator

The clearest difference is ads: PowerOne calculator at none against Calculator +'s shown. Calculator +'s advantage is review sentiment (85% vs 50%) and update cadence (every 5 days vs every 3 months). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Calculator + sells 12 in-app purchases, starting at $4.99 per month and PowerOne calculator sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Calculator + against 4.6 for PowerOne calculator. That said, the two scores are not equally well evidenced: Calculator + has 10K ratings behind it against 806, so its average is the more settled of the two. Written reviews are what separate them: 85% of Calculator +'s written reviews are positive against 50% of PowerOne calculator's.

Calculator + ships an update every 5 days, PowerOne calculator every 3 months. The most recent releases landed on October 28, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Calculator + | PowerOne calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (10K ratings)](https://appshunter.io/ios/app/calculator-plus/id351815470/reviews) | **[4.6 (806 ratings)](https://appshunter.io/ios/app/powerone-calculator/id1141498515/reviews)** |
| Number of ratings | **10K** | 806 |
| Positive reviews | **84.9% of reviews** | 50.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 50 MB | 6 MB |
| Requires iOS | **16.4** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [xNeat.com](https://appshunter.io/developer/327498295) | [Crafty Weasel, LLC](https://appshunter.io/developer/1602588690) |

## 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


### PowerOne calculator

[App page](https://appshunter.io/ios/app/powerone-calculator/id1141498515)

This app offers a powerful calculator with hundreds of pre-built templates for finance, engineering, and more. Users can also create custom calculations for specific needs, ensuring accuracy and speed for repetitive tasks. Access your calculations across devices, online or offline.

**Highlights:** Hundreds of pre-built calculation templates, Create custom calculation templates, Standard and RPN calculator modes, Cross-device syncing (iPhone, iPad, Mac, Web), Offline access, Template sharing for teams, Customizable themes

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Subscription | $2.99 | per month |
| Annual Premium Subscription | $19.99 | per year |

**What reviewers like**

- 🚀 Powerful and versatile calculator
- 👍 Extensive template library
- 🚀 Customizable keyboard and layout
- 👍 Helpful customer support
- 🚀 Syncing across devices

**What reviewers complain about**

- 🔒 Requires account login
- 👎 Subscription pricing model
- 👎 Cluttered and less user-friendly interface
- 👎 Removed features from previous versions
- 🐛 Bugs and glitches

**Reported bugs**

- Calculator not accessible after update
- Templates disappearing after update
- Incompatibility with iOS 16
- Calculation errors in certain templates

**Requested features**

- Landscape mode support
- Ability to reorganize templates
- Restore previous version's interface
- Retain access to purchased features


## Frequently asked questions

### Is Calculator + free?

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

### Is PowerOne calculator free?

PowerOne calculator is free to download, with in-app purchases available.

### Which has better reviews, Calculator + or PowerOne calculator?

PowerOne calculator is rated higher. Calculator + averages 4.6 out of 5 from 10K ratings, while PowerOne calculator averages 4.6 from 806 ratings.

### Do Calculator + or PowerOne calculator have ads?

Calculator + shows ads; PowerOne calculator does not.

### Which is updated more often, Calculator + or PowerOne calculator?

Calculator + ships an update every 5 days, and PowerOne calculator every 3 months. Most recently, Calculator + was updated on October 28, 2026 and PowerOne calculator on October 26, 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.*