# Calculator´ vs Clean Plus Driver

The clearest difference is in-app purchases: Clean Plus Driver at none against Calculator´'s 4. Clean Plus Driver also leads on iOS requirement (12.0 vs 14.0). Calculator´'s advantage is device support. On price there is nothing between them.

Both are free to download. Calculator´ sells 4 in-app purchases, starting at $0.49 per year. Clean Plus Driver asks for nothing beyond the download.

## The numbers

| Metric | Calculator´ | Clean Plus Driver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (475 ratings)](https://appshunter.io/ios/app/calculator/id878851717/reviews)** | — |
| Number of ratings | **475** | — |
| Positive reviews | 70.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 5 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 60 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | — |
| Age rating | 4+ | 17+ |
| Developer | [Oval Software Oy](https://appshunter.io/developer/1438258178) | [Al7osam](https://appshunter.io/developer/1292208382) |

## What reviewers say

### Calculator´

[App page](https://appshunter.io/ios/app/calculator/id878851717)

This app is a powerful and intelligent calculator with a smart UI and live results. It offers basic, advanced, and scientific functions, a history log, customizable themes, and user-definable functions. It also includes features like an on-screen timer and iPad multitasking support.

**Highlights:** Live results and natural feel UI, User-definable advanced functions, History log with easy access, Customizable themes and colors, On-screen timer, iPad multitasking and Spotlight search

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard features w/ Free Week | $0.49 | per year |
| Standard features w/ Free Year | $0.49 | per year |
| Complete feature-set | $3.99 | per year |
| Converter + Graphing | $3.99 | one-time |

**What reviewers like**

- 👍 Clean and intuitive user interface
- 🚀 Fast and efficient performance
- 📊 Shows calculation progression like paper tape
- 🎨 Customizable appearance and themes
- 📱 Works well as iPhone/iPad replacement for default calculator

**What reviewers complain about**

- 💰 Switched to subscription model from free/one-time purchase
- 😤 Bait-and-switch pricing strategy
- 🔐 Paywall on basic features like clear button
- 📺 Ads and pop-ups introduced
- ⚠️ Removed features after update

**Reported bugs**

- Buttons below numbers 1, 2, 3 not responding
- App crashes when screen fills with numbers
- Numbers deleted backwards after full screen
- Swipe down converter doesn't work properly on iPad
- Pressing equals multiple times adds duplicate results

**Requested features**

- Haptic feedback support
- Fraction calculation support
- RPN mode
- iCloud sync for history
- Automatic parentheses


### Clean Plus Driver

[App page](https://appshunter.io/ios/app/clean-plus-driver/id6590630376)

**In-app purchases:** none


## Frequently asked questions

### Is Calculator´ free?

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

### Is Clean Plus Driver free?

Clean Plus Driver is free to download, with no in-app purchases.

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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.*