# Calcu Plus vs calculator DUO

Calcu Plus and calculator DUO are too close to call on the numbers: across 5 compared parameters — price, update cadence, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Calcu Plus sells 1 one-off in-app purchase and calculator DUO sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Calcu Plus ships an update every 11 days, calculator DUO every 10 days. The most recent releases landed on October 18, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Calcu Plus | calculator DUO |
| --- | --- | --- |
| 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 | Yes |
| Ads | — | Yes |
| Update frequency | Every 11 days | **Every 10 days** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 11 MB |
| Requires iOS | **16.1** | 16.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jaspreet Singh](https://appshunter.io/developer/1128027430) | [Wenbin lei](https://appshunter.io/developer/1787331500) |

## What reviewers say

### Calcu Plus

[App page](https://appshunter.io/ios/app/calcu-plus/id6445866169)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get All Themes | $3.99 | one-time |


### calculator DUO

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

This utility app offers a modern calculator with a visual history feature, eliminating the need to memorize previous calculations. It also includes a comprehensive unit converter and a tip calculator that bases tips on pre-tax amounts.

**Highlights:** Visual history calculator (RESULT SHELF™), Unit converter, Tip calculator (pre-tax), Distraction-free design, Precise and efficient

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $7.99 | one-time |


## Frequently asked questions

### Is Calcu Plus free?

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

### Is calculator DUO free?

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

### Which is updated more often, Calcu Plus or calculator DUO?

Calcu Plus ships an update every 11 days, and calculator DUO every 10 days. Most recently, Calcu Plus was updated on October 18, 2026 and calculator DUO on October 9, 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.*