# Copper vs Rostrum

The clearest difference is review sentiment: Rostrum at 100% against Copper's 47%. Rostrum also leads on price (Free vs $4.99) and rating (5.0 vs 3.3). Copper's advantage is ratings volume (13 vs 1) and iOS requirement (9.3 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Rostrum is free to download; Copper costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Rostrum holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: Copper has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 47% of Copper's written reviews are positive against 100% of Rostrum's.

Copper ships an update every 3 months, Rostrum every 3 weeks. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Copper | Rostrum |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [3.3 (13 ratings)](https://appshunter.io/ios/app/copper-eagle-cad-viewer/id1070984826/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rostrum-speaker-timer/id6797343777/reviews)** |
| Number of ratings | **13** | 1 |
| Positive reviews | 47.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Size | 78 MB | 1 MB |
| Requires iOS | **9.3** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 17+ | 4+ |
| Developer | [Phillip Schuster](https://appshunter.io/developer/1048885754) | [Scott GREER](https://appshunter.io/developer/1889757381) |

## What reviewers say

### Copper

[App page](https://appshunter.io/ios/app/copper-eagle-cad-viewer/id1070984826)

View and analyze EAGLE CAD files, including PCB layouts and schematics, directly on your mobile device. Create and render photorealistic 3D models of your PCBs with customizable lighting and materials. Organize your imported files into a convenient pocket library.

**Highlights:** View EAGLE CAD files, Analyze PCB layouts and schematics, Create 3D PCB models, Assign 3D models to footprints, Real-time photorealistic rendering, Import files from various sources, Organize files in a personal library

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

**In-app purchases:** none


### Rostrum

[App page](https://appshunter.io/ios/app/rostrum-speaker-timer/id6797343777)

This app provides a silent, visual countdown timer for speakers, with customizable color cues to indicate time remaining. It offers intuitive gesture controls for adjustments and can mirror the display to a larger screen.

**Highlights:** Silent visual countdown, Customizable color stages, Gesture-based editing, External display mirroring, Never dims screen, Remembers settings

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Copper free?

Copper costs $4.99, with no in-app purchases.

### Is Rostrum free?

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

### Which has better reviews, Copper or Rostrum?

Rostrum is rated higher. Copper averages 3.3 out of 5 from 13 ratings, while Rostrum averages 5.0 from 1 ratings.

### Do Copper or Rostrum have ads?

Neither Copper nor Rostrum shows ads.

### Which is updated more often, Copper or Rostrum?

Copper ships an update every 3 months, and Rostrum every 3 weeks. Most recently, Copper was updated on November 2, 2026 and Rostrum on October 31, 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.*