# CAScience vs CSTA Events

The clearest difference is update cadence: CAScience at fortnightly against CSTA Events's every 4 months. CAScience also leads on iOS requirement (15.0 vs 17.0). On price, ads, 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.

CAScience ships an update fortnightly, CSTA Events every 4 months. The most recent releases landed on September 14, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | CAScience | CSTA Events |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/csta-events/id1629752265/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | — | Free |
| Size | 53 MB | 67 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [California Science Teachers Association](https://appshunter.io/developer/1479599097) | [Computer Science Teachers Association LLC](https://appshunter.io/developer/1469426649) |

## What reviewers say

### CAScience

[App page](https://appshunter.io/ios/app/cascience/id1479599098)

**Features:** macOS Compatibility

**In-app purchases:** none


### CSTA Events

[App page](https://appshunter.io/ios/app/csta-events/id1629752265)

Access the official schedule for the CSTA annual conference. Connect with other attendees and manage your event experience. Login using your event registration email.

**Highlights:** Event schedule access, Connect with attendees, Login with registration email, Official conference app

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CAScience free?

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

### Is CSTA Events free?

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

### Do CAScience or CSTA Events have ads?

Neither CAScience nor CSTA Events shows ads.

### Which is updated more often, CAScience or CSTA Events?

CAScience ships an update fortnightly, and CSTA Events every 4 months. Most recently, CAScience was updated on September 14, 2026 and CSTA Events on June 1, 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.*