# CalculatorPro vs Parallel

The clearest difference is in-app purchases: Parallel at none against CalculatorPro's 2. Parallel also leads on iOS requirement (18.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. CalculatorPro sells 2 one-off in-app purchases. Parallel asks for nothing beyond the download.

## The numbers

| Metric | CalculatorPro | Parallel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/parallel-multi-calculator/id6794806258/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 6 days |
| Monetization | — | Free |
| Size | 36 MB | 16 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Aylin Yahya-zada](https://appshunter.io/developer/1674241266) | [Evgenii Chizhov](https://appshunter.io/developer/6794806260) |

## What reviewers say

### CalculatorPro

[App page](https://appshunter.io/ios/app/calculatorpro-modes-and-widgets/id6753143677)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator Pro - Launch Offer | $3.99 | one-time |
| Calculator Pro | $5.99 | one-time |


### Parallel

[App page](https://appshunter.io/ios/app/parallel-multi-calculator/id6794806258)

Perform multiple calculations simultaneously with a drag-and-drop interface. Features a scientific calculator, currency and crypto converter, and history saving with optional privacy locks. Customize with themes and fonts.

**Highlights:** Run 2, 3, or 4 calculations side-by-side, Drag and drop calculation arrangement, Scientific calculator mode, Currency and crypto converter, Save calculation history with notes, Face ID/passcode lock for privacy, Home screen widget and Quick Menu access

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is CalculatorPro free?

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

### Is Parallel free?

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

### Do CalculatorPro or Parallel have ads?

Neither CalculatorPro nor Parallel shows ads.

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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.*