# Calculator₊ vs Conversion Calculator Units

The clearest difference is ratings volume: Calculator₊ at 1.7M against Conversion Calculator Units's 5K. Calculator₊ also leads on update cadence (fortnightly vs every 2 months) and chart position (#90 vs unranked). Conversion Calculator Units's advantage is review sentiment (82% vs 63%). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Calculator₊ sells 12 in-app purchases, starting at $0.99 per month and Conversion Calculator Units 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 Calculator₊ against 4.7 for Conversion Calculator Units. That said, the two scores are not equally well evidenced: Calculator₊ has 1.7M ratings behind it against 5K, so its average is the more settled of the two. Written reviews are what separate them: 63% of Calculator₊'s written reviews are positive against 82% of Conversion Calculator Units's.

Calculator₊ ships an update fortnightly, Conversion Calculator Units every 2 months. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Calculator₊ | Conversion Calculator Units |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1.7M ratings)](https://appshunter.io/ios/app/calculator/id398129933/reviews) | [4.7 (5K ratings)](https://appshunter.io/ios/app/conversion-calculator-units/id727632233/reviews) |
| Number of ratings | **1.7M** | 5K |
| Positive reviews | 63.2% of reviews | **82.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#90** | — |
| Size | 237 MB | 41 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Impala Studios](https://appshunter.io/developer/1063279743) | [RV AppStudios LLC](https://appshunter.io/developer/340181308) |

## What reviewers say

### Calculator₊

[App page](https://appshunter.io/ios/app/calculator/id398129933)

**Currently charting:** #90 Top Grossing · Utilities (US App Store)

This app offers a comprehensive suite of calculation tools, including basic, scientific, and unit conversion functions. It features an AI-powered math solver that can solve problems from photos and a dedicated math notes section for jotting down equations and diagrams. Accessibility options like dynamic text size and VoiceOver support are also included.

**Highlights:** Basic and scientific calculations, Unit and currency converter, AI-powered math solver with photo recognition, Math notes with instant solutions, Calculation history log, Accessibility features

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Member Special Offer | $0.99 | per month |
| Monthly Premium Member | $0.99 | per month |
| 1 Month Premium Access | $1.49 | per month |
| Unlimited Math Calculations | $3.99 | per 6 months |
| Half-Yearly Premium Member | $3.99 | per 6 months |
| Calculate Faster, AI, & No Ads | $4.99 | per 7 days |
| 1 Year Ad-Free | $5.99 | per year |
| Calculate Faster, AI, & No Ads | $5.99 | per 7 days |
| 1 Month Premium Trial | $5.99 | per 7 days |
| Math Solver/Full Access/No Ads | $5.99 | per 7 days |
| 6 Months Premium Access | $8.99 | per 6 months |
| Smart Currency & Fraction Calc | $14.99 | per year |

**What reviewers like**

- 💻 Useful calculator features
- 🎨 Customizable backgrounds and themes
- 📚 Helpful history tracking

**What reviewers complain about**

- 📺 Intrusive full-screen ads
- 💰 Expensive subscription model
- 🔍 Ads blocking calculator functionality

**Reported bugs**

- Incorrect calculation results for certain functions
- Inability to delete last entered digit without clearing entire calculation

**Requested features**

- Ability to delete individual calculation history entries
- More free advanced calculator features (fractions, currency, etc.)
- Improved ad placement that doesn't interfere with usage


### Conversion Calculator Units

[App page](https://appshunter.io/ios/app/conversion-calculator-units/id727632233)

This app offers a simple and powerful way to convert between over 140 units across 12 categories. Easily switch between units, customize your experience with themes, and share your results.

**Highlights:** Converts over 140 units, Supports 12 conversion categories, Customizable themes, Drag and set unit positions, Add units to favorites, Share converted units via email

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 👍 User-friendly
- 🚀 Easy to use
- 💡 Helpful for learning metric system
- 👍 Great for conversions
- 👍 Intuitive interface

**What reviewers complain about**

- 🐛 Ads disrupt usage
- 🐛 Difficult to change units
- 🐛 Lacks portrait mode
- 🐛 Upside-down orientation issues
- 🐛 Cluttered UI design

**Reported bugs**

- Ads not removed after purchase
- Incorrect unit conversions

**Requested features**

- Add pressure conversion units
- Include a basic calculator function
- Implement multi-language support
- Allow customization of unit order


## Frequently asked questions

### Is Calculator₊ free?

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

### Is Conversion Calculator Units free?

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

### Which has better reviews, Calculator₊ or Conversion Calculator Units?

Calculator₊ and Conversion Calculator Units are both rated 4.7 out of 5 on the App Store, from 1.7M and 5K ratings respectively.

### Do Calculator₊ or Conversion Calculator Units have ads?

Both Calculator₊ and Conversion Calculator Units show ads.

### Which is updated more often, Calculator₊ or Conversion Calculator Units?

Calculator₊ ships an update fortnightly, and Conversion Calculator Units every 2 months. Most recently, Calculator₊ was updated on September 24, 2026 and Conversion Calculator Units 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.*