# calculator DUO vs JustCalc

The clearest difference is in-app purchases: JustCalc at none against calculator DUO's 1. JustCalc also leads on iOS requirement (13.0 vs 16.5). calculator DUO's advantage is device support. On price there is nothing between them.

Both are free to download. calculator DUO sells 1 one-off in-app purchase. JustCalc asks for nothing beyond the download.

## The numbers

| Metric | calculator DUO | JustCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/calculator-duo/id6739860116/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | Every 10 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 24 MB |
| Requires iOS | 16.5 | **13.0** |
| Devices | **iPhone, iPad** | — |
| Age rating | 4+ | 4+ |
| Developer | [Wenbin lei](https://appshunter.io/developer/1787331500) | [Hean Zhen Gooi](https://appshunter.io/developer/1650757973) |

## What reviewers say

### calculator DUO

[App page](https://appshunter.io/ios/app/calculator-duo/id6739860116)

This utility app allows for comfortable one-handed calculations by letting you reposition the keypad. It also provides features to save and reuse past answers, correct input with a swipe, and handle both everyday and scientific calculations, including date and time functions.

**Highlights:** One-handed keypad repositioning, Save and reuse past answers, Swipe to delete/correct input, Everyday and scientific functions, Date and time calculations, Customizable themes and display

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (1)**

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


### JustCalc

[App page](https://appshunter.io/ios/app/justcalc-smart-calculator/id6760839729)

**In-app purchases:** none


## Frequently asked questions

### Is calculator DUO free?

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

### Is JustCalc free?

JustCalc 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.*