# Dual Calculator vs CalcBoard

The clearest difference is in-app purchases: Dual Calculator at none against CalcBoard's 1. CalcBoard's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. CalcBoard sells 1 one-off in-app purchase. Dual Calculator asks for nothing beyond the download.

Dual Calculator ships an update every 5 months, CalcBoard every 3 months. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Dual Calculator | CalcBoard |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 months** |
| Size | 33 MB | 50 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Huzaib Sayyed](https://appshunter.io/developer/1778310247) | [Colby Clark](https://appshunter.io/developer/1110053823) |

## What reviewers say

### Dual Calculator

[App page](https://appshunter.io/ios/app/dual-calculator-split-screen/id6738931674)

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

**In-app purchases:** none


### CalcBoard

[App page](https://appshunter.io/ios/app/calcboard-multi-calculator/id6759535339)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CalcBoard Premium | $2.99 | one-time |


## Frequently asked questions

### Is Dual Calculator free?

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

### Is CalcBoard free?

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

### Do Dual Calculator or CalcBoard have ads?

Dual Calculator shows ads; CalcBoard does not.

### Which is updated more often, Dual Calculator or CalcBoard?

Dual Calculator ships an update every 5 months, and CalcBoard every 3 months. Most recently, Dual Calculator was updated on October 4, 2026 and CalcBoard on October 16, 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.*