# Copper vs AC Calculator Pro

The clearest difference is review sentiment: Copper at 47% against AC Calculator Pro's 0%. Copper also leads on price ($4.99 vs $9.99) and ratings volume (13 vs 1). AC Calculator Pro's advantage is rating (5.0 vs 3.3). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Copper costs $4.99 and AC Calculator Pro $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AC Calculator Pro 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 complicate that: 47% of Copper's written reviews are positive against 0% of AC Calculator Pro's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Copper | AC Calculator Pro |
| --- | --- | --- |
| Price | **$4.99** | $9.99 |
| 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/ac-calculator-pro/id1534398509/reviews)** |
| Number of ratings | **13** | 1 |
| Positive reviews | **47.4% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Paid | Paid |
| Size | 78 MB | 9 MB |
| Requires iOS | **9.3** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Phillip Schuster](https://appshunter.io/developer/1048885754) | [Melchisedec Martinez Rodriguez](https://appshunter.io/developer/1534398511) |

## 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


### AC Calculator Pro

[App page](https://appshunter.io/ios/app/ac-calculator-pro/id1534398509)

This app assists HVAC professionals and homeowners with air conditioning and heat pump sizing. It provides detailed calculations for cooling/heating capacity, recommends equipment types, and offers unit equivalences and price estimates.

**Highlights:** Commercial Capacity Calculations (BTU/h), Recommended Equipment Types, Unit Equivalences (BTU, kW, Kcal, Tons), Updated Price Estimates, Energy Consumption Insights

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

**In-app purchases:** none


## Frequently asked questions

### Is Copper free?

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

### Is AC Calculator Pro free?

AC Calculator Pro costs $9.99, with no in-app purchases.

### Which has better reviews, Copper or AC Calculator Pro?

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

### Do Copper or AC Calculator Pro have ads?

Neither Copper nor AC Calculator Pro shows ads.

### Which is updated more often, Copper or AC Calculator Pro?

Copper ships an update every 3 months, and AC Calculator Pro every 3 months. Most recently, Copper was updated on October 24, 2026 and AC Calculator Pro on October 27, 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.*