# Calculator x Calculator vs Zerosec Note

The clearest difference is update cadence: Zerosec Note at weekly against Calculator x Calculator's every 4 months. Calculator x Calculator's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 16.4). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Calculator x Calculator ships an update every 4 months, Zerosec Note weekly. Both last shipped on October 28, 2026.

## The numbers

| Metric | Calculator x Calculator | Zerosec Note |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/calculator-x-calculator/id1480545211/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Free | — |
| Size | 18 MB | 1 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kazuya Fujita](https://appshunter.io/developer/1358322690) | [崇旭 王](https://appshunter.io/developer/1782724458) |

## What reviewers say

### Calculator x Calculator

[App page](https://appshunter.io/ios/app/calculator-x-calculator/id1480545211)

This app displays two independent calculators on a single screen, allowing for increased work efficiency. It's designed to streamline calculations by offering dual functionality. Contact the developer via Twitter for feedback.

**Highlights:** Two independent calculators, Simultaneous calculations, Improved work efficiency, Dual screen display

**Features:** macOS Compatibility

**In-app purchases:** none


### Zerosec Note

[App page](https://appshunter.io/ios/app/zerosec-note/id6738882186)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator x Calculator free?

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

### Is Zerosec Note free?

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

### Do Calculator x Calculator or Zerosec Note have ads?

Neither Calculator x Calculator nor Zerosec Note shows ads.

### Which is updated more often, Calculator x Calculator or Zerosec Note?

Calculator x Calculator ships an update every 4 months, and Zerosec Note weekly. Most recently, Calculator x Calculator was updated on October 28, 2026 and Zerosec Note on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*