# Relativity Widget vs Numeris 3D Graphing Calculator

The clearest difference is in-app purchases: Relativity Widget at none against Numeris 3D Graphing Calculator's 1. Numeris 3D Graphing Calculator's advantage is update cadence (monthly vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Numeris 3D Graphing Calculator sells 1 one-off in-app purchase. Relativity Widget asks for nothing beyond the download.

Relativity Widget ships an update every 6 months, Numeris 3D Graphing Calculator monthly. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Relativity Widget | Numeris 3D Graphing Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/relativity-widget/id1534420574/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | Free | — |
| Size | 1 MB | 22 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Eliott Morgensztern](https://appshunter.io/developer/1478504124) | [Dustin Dondrup](https://appshunter.io/developer/1895779068) |

## What reviewers say

### Relativity Widget

[App page](https://appshunter.io/ios/app/relativity-widget/id1534420574)

Visualize Einstein's theories of relativity directly on your home screen. Choose between Special Relativity to see time dilation in a spaceship or General Relativity to observe time differences near a black hole.

**Highlights:** Special Relativity visualization, General Relativity visualization, Time dilation display, Home screen integration, Customizable speed/distance settings

**Features:** macOS Compatibility

**In-app purchases:** none


### Numeris 3D Graphing Calculator

[App page](https://appshunter.io/ios/app/numeris-3d-graphing-calculator/id6764434554)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Numeris Pro | $2.99 | one-time |


## Frequently asked questions

### Is Relativity Widget free?

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

### Is Numeris 3D Graphing Calculator free?

Numeris 3D Graphing Calculator is free to download, with in-app purchases available.

### Do Relativity Widget or Numeris 3D Graphing Calculator have ads?

Neither Relativity Widget nor Numeris 3D Graphing Calculator shows ads.

### Which is updated more often, Relativity Widget or Numeris 3D Graphing Calculator?

Relativity Widget ships an update every 6 months, and Numeris 3D Graphing Calculator monthly. Most recently, Relativity Widget was updated on October 4, 2026 and Numeris 3D Graphing Calculator on October 8, 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.*