# Calc Engine vs CalculatorRe

The clearest difference is in-app purchases: CalculatorRe at none against Calc Engine's 1. Calc Engine's advantage is update cadence (daily vs every 4 days) and device support (4 vs 1). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Calc Engine against 5.0 for CalculatorRe. Both are backed by a comparable volume of ratings — 5 and 2 respectively.

Calc Engine ships an update daily, CalculatorRe every 4 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Calc Engine | CalculatorRe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/calc-engine/id1061766849/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/calculatorre/id6446059337/reviews) |
| Number of ratings | **5** | 2 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 4 days |
| Monetization | Free | Free |
| Size | 17 MB | 1 MB |
| Requires iOS | **18** | 27.0 |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [VersaEdge Software, LLC](https://appshunter.io/developer/301294952) | [睿 洪](https://appshunter.io/developer/1515008332) |

## 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 |


### CalculatorRe

[App page](https://appshunter.io/ios/app/calculatorre/id6446059337)

Enhance your iPhone's calculator experience with a clean interface and powerful functions. Perform polynomial calculations and access common mathematical operations with quick results.

**Highlights:** Simple and precise UI, Polynomial calculation, Common mathematical functions, Quick result display, Ad-free experience

**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 CalculatorRe free?

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

### Which has better reviews, Calc Engine or CalculatorRe?

Calc Engine and CalculatorRe are both rated 5.0 out of 5 on the App Store, from 5 and 2 ratings respectively.

### Do Calc Engine or CalculatorRe have ads?

Neither Calc Engine nor CalculatorRe shows ads.

### Which is updated more often, Calc Engine or CalculatorRe?

Calc Engine ships an update daily, and CalculatorRe every 4 days. Most recently, Calc Engine was updated on November 2, 2026 and CalculatorRe on November 3, 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.*