# COSAction vs EAA Events

The clearest difference is review sentiment: COSAction at 100% against EAA Events's 15%. COSAction also leads on rating (4.9 vs 2.8) and ads (none vs shown). EAA Events's advantage is ratings volume (78 vs 10). On price, 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.

COSAction holds the better App Store score, 4.9 against 2.8. That said, the two scores are not equally well evidenced: EAA Events has 78 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 100% of COSAction's written reviews are positive against 15% of EAA Events's.

COSAction ships an update fortnightly, EAA Events every 5 months. The most recent releases landed on June 1, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | COSAction | EAA Events |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (10 ratings)](https://appshunter.io/ios/app/cosaction/id1482603474/reviews)** | [2.8 (78 ratings)](https://appshunter.io/ios/app/eaa-events/id1625746449/reviews) |
| Number of ratings | 10 | **78** |
| Positive reviews | **100.0% of reviews** | 14.6% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 5 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 39 MB | 50 MB |
| Requires iOS | **10.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Citizens for Self-Governance](https://appshunter.io/developer/1248810421) | [EXPERIMENTAL AIRCRAFT ASSOCIATION, INC.](https://appshunter.io/developer/891781610) |

## What reviewers say

### COSAction

[App page](https://appshunter.io/ios/app/cosaction/id1482603474)

Empower grassroots activists with tools to connect with state legislators and build local support teams. Access news, track legislative actions, and utilize a phone outreach tool to advance constitutional amendments.

**Highlights:** Legislator contact tools, Volunteer team building, News articles, Action reports, Notifications, Phone outreach tool

**In-app purchases:** none


### EAA Events

[App page](https://appshunter.io/ios/app/eaa-events/id1625746449)

This app provides comprehensive event information for aviation enthusiasts, allowing users to browse, filter, and search for activities, attractions, and exhibitors. Users can plan their visit by building a personalized itinerary and receive important notifications about schedule changes and weather.

**Highlights:** Event browsing and filtering, Searchable attractions and exhibitors, Personalized itinerary builder, Real-time notifications, Schedule change alerts, Weather updates

**In-app purchases:** none


## Frequently asked questions

### Is COSAction free?

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

### Is EAA Events free?

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

### Which has better reviews, COSAction or EAA Events?

COSAction is rated higher. COSAction averages 4.9 out of 5 from 10 ratings, while EAA Events averages 2.8 from 78 ratings.

### Do COSAction or EAA Events have ads?

EAA Events shows ads; COSAction does not.

### Which is updated more often, COSAction or EAA Events?

COSAction ships an update fortnightly, and EAA Events every 5 months. Most recently, COSAction was updated on June 1, 2026 and EAA Events on September 28, 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.*