# calculator DUO vs Calculator Toolkit

The clearest difference is in-app purchases: Calculator Toolkit at none against calculator DUO's 1. Calculator Toolkit also leads on ads (none vs shown). calculator DUO's advantage is update cadence (every 11 days vs every 3 months). On price, device support and iOS requirement there is nothing between them.

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

calculator DUO ships an update every 11 days, Calculator Toolkit every 3 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | calculator DUO | Calculator Toolkit |
| --- | --- | --- |
| 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 | **No** |
| Update frequency | **Every 11 days** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 56 MB |
| Requires iOS | 16.5 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wenbin lei](https://appshunter.io/developer/1787331500) | [Urmin Hirpara](https://appshunter.io/developer/1890506463) |

## What reviewers say

### calculator DUO

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

Perform calculations with one hand by repositioning the keypad. Save and reuse past results, and easily correct input with swipe gestures. Handles everyday math, scientific functions, and date/time calculations.

**Highlights:** One-handed keypad adjustment, Save and reuse past results, Swipe to delete/correct input, Scientific and everyday functions, Date and time calculations, Customizable themes and languages

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

**In-app purchases (1)**

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


### Calculator Toolkit

[App page](https://appshunter.io/ios/app/calculator-toolkit/id6762042272)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is calculator DUO free?

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

### Is Calculator Toolkit free?

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

### Do calculator DUO or Calculator Toolkit have ads?

calculator DUO shows ads; Calculator Toolkit does not.

### Which is updated more often, calculator DUO or Calculator Toolkit?

calculator DUO ships an update every 11 days, and Calculator Toolkit every 3 months. Most recently, calculator DUO was updated on October 30, 2026 and Calculator Toolkit on October 28, 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.*