# AST Meetings vs Space Arc

The clearest difference is ads: AST Meetings at none against Space Arc's shown. AST Meetings also leads on monetization model (free vs ad-supported) and device support (3 vs 1). Space Arc's advantage is update cadence (monthly vs every 4 months). On price, rating, ratings volume and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for AST Meetings against 5.0 for Space Arc. Both are backed by a comparable volume of ratings — 7 and 3 respectively.

AST Meetings ships an update every 4 months, Space Arc monthly. The most recent releases landed on October 13, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AST Meetings | Space Arc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (7 ratings)](https://appshunter.io/ios/app/ast-meetings/id6476503941/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/space-arc/id6759466047/reviews) |
| Number of ratings | **7** | 3 |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | **Free** | Ad-supported |
| Size | 94 MB | 8 MB |
| Requires iOS | **15.5** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [American Society of Transplantation](https://appshunter.io/developer/1726923780) | [Marc L. Melcher](https://appshunter.io/developer/371961192) |

## What reviewers say

### AST Meetings

[App page](https://appshunter.io/ios/app/ast-meetings/id6476503941)

This app offers attendees access to meeting agendas, abstracts, exhibitors, and faculty. Users can also connect with other participants and explore social media and membership services.

**Highlights:** Access meeting agenda, View abstracts, Explore exhibitor information, Connect with attendees, Access faculty details, Explore social media

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

**In-app purchases:** none


### Space Arc

[App page](https://appshunter.io/ios/app/space-arc/id6759466047)

Explore celestial events with real-time data from NASA and other space agencies. Track satellites, view stunning astronomy pictures, and get personalized alerts for meteor showers, eclipses, and aurora.

**Highlights:** Real-time satellite tracking, NASA Picture of the Day, Global launch calendar, Celestial events calendar, Aurora alerts, Smart notifications, Offline event caching

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AST Meetings free?

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

### Is Space Arc free?

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

### Which has better reviews, AST Meetings or Space Arc?

AST Meetings and Space Arc are both rated 5.0 out of 5 on the App Store, from 7 and 3 ratings respectively.

### Do AST Meetings or Space Arc have ads?

Space Arc shows ads; AST Meetings does not.

### Which is updated more often, AST Meetings or Space Arc?

AST Meetings ships an update every 4 months, and Space Arc monthly. Most recently, AST Meetings was updated on October 13, 2026 and Space Arc 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.*