# 変数電卓+ vs Cogno

The clearest difference is update cadence: 変数電卓+ at daily against Cogno's every 8 months. 変数電卓+ also leads on iOS requirement (12.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

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

変数電卓+ ships an update daily, Cogno every 8 months. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 変数電卓+ | Cogno |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 8 months |
| Size | 27 MB | 58 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Takuya Nemoto](https://appshunter.io/developer/1817950976) | [Yuichi Matsuoka](https://appshunter.io/developer/1855259049) |

## What reviewers say

### 変数電卓+

[App page](https://appshunter.io/ios/app/plus/id6746694817)

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

**In-app purchases:** none


### Cogno

[App page](https://appshunter.io/ios/app/cogno/id6755649034)

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

**In-app purchases:** none


## Frequently asked questions

### Is 変数電卓+ free?

変数電卓+ is free to download, with no in-app purchases.

### Is Cogno free?

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

### Do 変数電卓+ or Cogno have ads?

Neither 変数電卓+ nor Cogno shows ads.

### Which is updated more often, 変数電卓+ or Cogno?

変数電卓+ ships an update daily, and Cogno every 8 months. Most recently, 変数電卓+ was updated on November 8, 2026 and Cogno on November 5, 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.*