# OpenCup vs EcoMeter Pro

The clearest difference is price: EcoMeter Pro at Free against OpenCup's $9.99. EcoMeter Pro also leads on update cadence (daily vs every 27 months) and iOS requirement (13.0 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

EcoMeter Pro is free to download; OpenCup costs $9.99 up front. OpenCup sells 7 one-off in-app purchases and EcoMeter Pro sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

OpenCup ships an update every 27 months, EcoMeter Pro daily. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | OpenCup | EcoMeter Pro |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ecometer-pro/id6755688522/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 27 months | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 16 MB | 51 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Artisan Coffee Group Inc](https://appshunter.io/developer/1093524413) | [KYLE T WHITE](https://appshunter.io/developer/1855567390) |

## What reviewers say

### OpenCup

[App page](https://appshunter.io/ios/app/opencup/id1093524414)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Free Starter Evaluation Credits | Free | one-time |
| 10 Evaluation Credits | $9.99 | one-time |
| 20 Evaluation Credits | $18.99 | one-time |
| 40 Evaluation Credits | $36.99 | one-time |
| Monthly Plus Evaluation | $99.99 | one-time |
| Weekly Plus Evaluation | $249.99 | one-time |
| Daily Plus Evaluation | $399.99 | one-time |


### EcoMeter Pro

[App page](https://appshunter.io/ios/app/ecometer-pro/id6755688522)

This tool streamlines HVAC airflow balancing and reporting for technicians. It guides users through proportional balancing and generates professional PDF reports for residential and light commercial applications, ensuring speed and accuracy in the field.

**Highlights:** Proportional airflow balancing workflow, Standalone single-system balance reports (PDF), Outlet-level balancing summaries, Fast, repeatable field calculations, Customizable reports with company branding

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EcoMeter Standard – Monthly | $4.99 | per month |
| EcoMeter Standard – Yearly | $39.99 | per year |


## Frequently asked questions

### Is OpenCup free?

OpenCup costs $9.99, and also offers in-app purchases.

### Is EcoMeter Pro free?

EcoMeter Pro is free to download, with in-app purchases available.

### Do OpenCup or EcoMeter Pro have ads?

Neither OpenCup nor EcoMeter Pro shows ads.

### Which is updated more often, OpenCup or EcoMeter Pro?

OpenCup ships an update every 27 months, and EcoMeter Pro daily. Most recently, OpenCup was updated on October 3, 2026 and EcoMeter Pro on October 15, 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.*