# ECHO HeliOps vs WEINMANN O2 Calculator

ECHO HeliOps and WEINMANN O2 Calculator are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | ECHO HeliOps | WEINMANN O2 Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/echo-heliops/id1635025022/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free | — |
| Size | 370 MB | 6 MB |
| Requires iOS | 15.1 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Every Coast Helicopter Operations (App)](https://appshunter.io/developer/1834960795) | [Fadi Amawi](https://appshunter.io/developer/1855900257) |

## What reviewers say

### ECHO HeliOps

[App page](https://appshunter.io/ios/app/echo-heliops/id1635025022)

Access the latest updates and resources for public safety aviation. This app provides FAST Team information and allows for the purchase of branded gear. Stay informed and connected with essential aviation resources.

**Highlights:** Latest conference updates, FAST Team resources, Purchase ECHO Gear, Stay informed, Connect with aviation resources

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

**In-app purchases:** none


### WEINMANN O2 Calculator

[App page](https://appshunter.io/ios/app/weinmann-o2-calculator/id6755727601)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ECHO HeliOps free?

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

### Is WEINMANN O2 Calculator free?

WEINMANN O2 Calculator is free to download, with no in-app purchases.

### Do ECHO HeliOps or WEINMANN O2 Calculator have ads?

Neither ECHO HeliOps nor WEINMANN O2 Calculator shows ads.

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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.*