# ASTC vs Interactive Drawings

The clearest difference is update cadence: Interactive Drawings at every 11 days against ASTC's every 11 months. Interactive Drawings also leads on iOS requirement (13.0 vs 15.5). 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.

ASTC ships an update every 11 months, Interactive Drawings every 11 days. The most recent releases landed on October 16, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | ASTC | Interactive Drawings |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (36 ratings)](https://appshunter.io/ios/app/astc/id6466039138/reviews)** | — |
| Number of ratings | **36** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 11 days** |
| Monetization | Free | — |
| Size | 87 MB | 397 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [ASSOCIATION OF SCIENCE-TECHNOLOGY CENTERS, INC.](https://appshunter.io/developer/1437372010) | [IX42](https://appshunter.io/developer/1513161082) |

## What reviewers say

### ASTC

[App page](https://appshunter.io/ios/app/astc/id6466039138)

Enhance your conference experience by accessing schedules, speaker details, and exhibitor information. Take notes directly on presentation slides in real-time and share insights with attendees via in-app messaging, tweeting, or email.

**Highlights:** View conference schedule, Access speaker and exhibitor details, Take real-time notes on slides, Draw directly on presentation slides, In-app messaging with attendees, Share information via tweet/email

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

**In-app purchases:** none


### Interactive Drawings

[App page](https://appshunter.io/ios/app/interactive-drawings/id6742191901)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ASTC free?

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

### Is Interactive Drawings free?

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

### Do ASTC or Interactive Drawings have ads?

Neither ASTC nor Interactive Drawings shows ads.

### Which is updated more often, ASTC or Interactive Drawings?

ASTC ships an update every 11 months, and Interactive Drawings every 11 days. Most recently, ASTC was updated on October 16, 2026 and Interactive Drawings on October 5, 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.*