# Calc Engine vs Orbit

The clearest difference is in-app purchases: Orbit at none against Calc Engine's 1. Calc Engine's advantage is device support (4 vs 2) and iOS requirement (18 vs 26.2). On price and ads there is nothing between them.

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

## The numbers

| Metric | Calc Engine | Orbit |
| --- | --- | --- |
| 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 | — |
| Monetization | Free | — |
| Size | 17 MB | 8 MB |
| Requires iOS | **18** | 26.2 |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [VersaEdge Software, LLC](https://appshunter.io/developer/301294952) | [Ryukei Ono](https://appshunter.io/developer/1868675930) |

## 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 |


### Orbit

[App page](https://appshunter.io/ios/app/orbit-habit-tracker/id6759854168)

**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 Orbit free?

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

### Do Calc Engine or Orbit have ads?

Neither Calc Engine nor Orbit shows ads.

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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.*