# Sim DATA Calculator vs Stellar by ARRI

The clearest difference is rating: Stellar by ARRI at 4.5 against Sim DATA Calculator's 3.3. Stellar by ARRI also leads on update cadence (every 6 weeks vs every 3 months) and ratings volume (41 vs 8). Sim DATA Calculator's advantage is review sentiment (67% vs 31%) and in-app purchases (none vs 3). On price, ads and device support there is nothing between them.

Both are free to download. Stellar by ARRI sells 3 in-app purchases, starting at $9.99 per month. Sim DATA Calculator asks for nothing beyond the download.

Stellar by ARRI holds the better App Store score, 4.5 against 3.3. That said, the two scores are not equally well evidenced: Stellar by ARRI has 41 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 67% of Sim DATA Calculator's written reviews are positive against 31% of Stellar by ARRI's, so the app with the better star average is not the one people write more warmly about.

Sim DATA Calculator ships an update every 3 months, Stellar by ARRI every 6 weeks. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Sim DATA Calculator | Stellar by ARRI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (8 ratings)](https://appshunter.io/ios/app/sim-data-calculator/id1227617424/reviews) | **[4.5 (41 ratings)](https://appshunter.io/ios/app/stellar-by-arri/id1429030664/reviews)** |
| Number of ratings | 8 | **41** |
| Positive reviews | **66.7% of reviews** | 30.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 84 MB |
| Requires iOS | **8.0** | 13.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Picture Shop, LLC](https://appshunter.io/developer/1578966152) | [ARRI Group](https://appshunter.io/developer/733009342) |

## What reviewers say

### Sim DATA Calculator

[App page](https://appshunter.io/ios/app/sim-data-calculator/id1227617424)

This tool helps professionals in media production calculate data transfer times and media sizes for various cameras. It offers an all-in-one solution for comparing camera data, estimating internet transfer durations, and calculating consumption for entire shows or movies.

**Highlights:** Compare camera data sizes side-by-side, Calculate internet transfer times, Copy results to clipboard, Calculate data consumption for TV shows/movies, Calculate complex framing variations

**Features:** macOS Compatibility

**In-app purchases:** none


### Stellar by ARRI

[App page](https://appshunter.io/ios/app/stellar-by-arri/id1429030664)

This app simplifies professional lighting control for film and studio productions. It automates complex DMX settings, offers intuitive interfaces for color adjustments, and seamlessly connects ARRI and third-party fixtures. Organize setups, manage fixtures, and create custom looks with ease.

**Highlights:** Project and scene organization, Automatic fixture discovery (RDM), Auto Layout for DMX management, Advanced color control (CCT, HSI, RGBW, x,y), Fixture grouping and control, Import light plot diagrams, Export/Import projects and scenes

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stellar Monthly Subscription | $9.99 | per month |
| Stellar Yearly Subscription | $99.99 | per year |
| Stellar Unlimited | $99.99 | one-time |


## Frequently asked questions

### Is Sim DATA Calculator free?

Sim DATA Calculator is free to download, with no in-app purchases.

### Is Stellar by ARRI free?

Stellar by ARRI is free to download, with in-app purchases available.

### Which has better reviews, Sim DATA Calculator or Stellar by ARRI?

Stellar by ARRI is rated higher. Sim DATA Calculator averages 3.3 out of 5 from 8 ratings, while Stellar by ARRI averages 4.5 from 41 ratings.

### Do Sim DATA Calculator or Stellar by ARRI have ads?

Neither Sim DATA Calculator nor Stellar by ARRI shows ads.

### Which is updated more often, Sim DATA Calculator or Stellar by ARRI?

Sim DATA Calculator ships an update every 3 months, and Stellar by ARRI every 6 weeks. Most recently, Sim DATA Calculator was updated on October 4, 2026 and Stellar by ARRI on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*