# Calc Engine vs multiple operation calculator

The clearest difference is in-app purchases: multiple operation calculator at none against Calc Engine's 1. multiple operation calculator also leads on iOS requirement (15.8.3 vs 18). Calc Engine's advantage is ads (none vs shown) and update cadence (daily vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. Calc Engine sells 1 one-off in-app purchase. multiple operation calculator asks for nothing beyond the download.

Calc Engine ships an update daily, multiple operation calculator every 2 weeks. The most recent releases landed on October 16, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Calc Engine | multiple operation calculator |
| --- | --- | --- |
| 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** | Yes |
| Update frequency | **Daily** | Every 2 weeks |
| Monetization | Free | — |
| Size | 17 MB | 35 MB |
| Requires iOS | 18 | **15.8.3** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VersaEdge Software, LLC](https://appshunter.io/developer/301294952) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## 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 |


### multiple operation calculator

[App page](https://appshunter.io/ios/app/multiple-operation-calculator/id6499478564)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calc Engine free?

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

### Is multiple operation calculator free?

multiple operation calculator is free to download, with no in-app purchases.

### Do Calc Engine or multiple operation calculator have ads?

multiple operation calculator shows ads; Calc Engine does not.

### Which is updated more often, Calc Engine or multiple operation calculator?

Calc Engine ships an update daily, and multiple operation calculator every 2 weeks. Most recently, Calc Engine was updated on October 16, 2026 and multiple operation calculator on October 2, 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.*