# Duel vs 1Calc

The clearest difference is in-app purchases: Duel at none against 1Calc's 3. Duel also leads on iOS requirement (13.0 vs 18.0). On price there is nothing between them.

Both are free to download. 1Calc sells 3 in-app purchases, starting at $0.99 per month. Duel asks for nothing beyond the download.

## The numbers

| Metric | Duel | 1Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/1calc-one-calculator/id6502853473/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | — | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 93 MB | 6 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Maximilian Hemme](https://appshunter.io/developer/1657407562) | [Asim Roy](https://appshunter.io/developer/1703408134) |

## What reviewers say

### Duel

[App page](https://appshunter.io/ios/app/duel-desk/id1661032321)

**In-app purchases:** none


### 1Calc

[App page](https://appshunter.io/ios/app/1calc-one-calculator/id6502853473)

This app offers a streamlined calculator experience with a history feature to review past calculations. It boasts a modern design with customizable themes and ensures a premium user experience by being ad-free for premium users. Enhanced percentage calculation logic provides accurate results.

**Highlights:** History functionality, Customizable themes, Ad-free premium experience, Accurate percentage calculation, Smart and modern design

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $3.99 | per year |
| Lifetime | $8.99 | one-time |


## Frequently asked questions

### Is Duel free?

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

### Is 1Calc free?

1Calc is free to download, with in-app purchases available.

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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.*