# Calc Engine vs 高機能な電卓

The clearest difference is in-app purchases: 高機能な電卓 at none against Calc Engine's 1. Calc Engine's advantage is update cadence (daily vs every 2 weeks) and device support (4 vs 1). On price and ads there is nothing between them.

Both are free to download. Calc Engine sells 1 one-off in-app purchase. 高機能な電卓 asks for nothing beyond the download.

Calc Engine ships an update daily, 高機能な電卓 every 2 weeks. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Calc Engine | 高機能な電卓 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/calc-engine/id1061766849/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 weeks |
| Monetization | Free | — |
| Size | 17 MB | 3 MB |
| Requires iOS | **18** | 26.0 |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [VersaEdge Software, LLC](https://appshunter.io/developer/301294952) | [Koki Komatsu](https://appshunter.io/developer/1796307607) |

## What reviewers say

### Calc Engine

[App page](https://appshunter.io/ios/app/calc-engine/id1061766849)

A highly customizable calculator with advanced features like graphing, equation solving, and unit conversion. Design your own keyboards and functions to streamline your workflow across Apple devices.

**Highlights:** Customizable keyboard layouts, User-defined functions and constants, Live equation graphing, Equation solving, Extensive unit conversions, Programmer mode (hex, binary, octal), Cross-device syncing

**Features:** Family Sharing, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calc Engine+ | $9.99 | one-time |


### 高機能な電卓

[App page](https://appshunter.io/ios/app/id6799535633)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calc Engine free?

Calc Engine is free to download, with in-app purchases available.

### Is 高機能な電卓 free?

高機能な電卓 is free to download, with no in-app purchases.

### Do Calc Engine or 高機能な電卓 have ads?

Neither Calc Engine nor 高機能な電卓 shows ads.

### Which is updated more often, Calc Engine or 高機能な電卓?

Calc Engine ships an update daily, and 高機能な電卓 every 2 weeks. Most recently, Calc Engine was updated on October 24, 2026 and 高機能な電卓 on October 13, 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.*