# Donna Pro vs ARRI ECS

The clearest difference is update cadence: Donna Pro at every 4 days against ARRI ECS's every 14 months. Donna Pro also leads on iOS requirement (8.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Donna Pro ships an update every 4 days, ARRI ECS every 14 months. The most recent releases landed on June 1, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Donna Pro | ARRI ECS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (14 ratings)](https://appshunter.io/ios/app/donna-pro/id1248670372/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 14 months |
| Monetization | Free | — |
| Size | 256 MB | 23 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kristopher Prygrocki](https://appshunter.io/developer/824447689) | [ARRI Group](https://appshunter.io/developer/733009342) |

## What reviewers say

### Donna Pro

[App page](https://appshunter.io/ios/app/donna-pro/id1248670372)

This app simulates the menu structure of RED cameras, allowing users to learn, practice, and reference settings. It's a valuable tool for filmmakers and technicians working with RED camera systems, offering quick access to information and support resources.

**Highlights:** Realtime Push Notifications, IPP2 Menu Tree Simulation, RED TECH information, FAQ and Support access, Frame rate and resolution calculator, Learn, practice, and reference menu structure

**Features:** macOS Compatibility

**In-app purchases:** none


### ARRI ECS

[App page](https://appshunter.io/ios/app/arri-ecs/id1555674483)

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

**In-app purchases:** none


## Frequently asked questions

### Is Donna Pro free?

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

### Is ARRI ECS free?

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

### Do Donna Pro or ARRI ECS have ads?

Neither Donna Pro nor ARRI ECS shows ads.

### Which is updated more often, Donna Pro or ARRI ECS?

Donna Pro ships an update every 4 days, and ARRI ECS every 14 months. Most recently, Donna Pro was updated on June 1, 2026 and ARRI ECS on September 19, 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.*