# IMSS Chicago vs ASTC

The clearest difference is review sentiment: IMSS Chicago at 100% against ASTC's 0%. IMSS Chicago also leads on update cadence (every 2 months vs every 12 months) and rating (5.0 vs 4.7). ASTC's advantage is ratings volume (30 vs 3). On price, ads, in-app purchases and monetization model there is nothing between them.

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

IMSS Chicago holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: ASTC has 30 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of IMSS Chicago's written reviews are positive against 0% of ASTC's.

IMSS Chicago ships an update every 2 months, ASTC every 12 months. The most recent releases landed on June 1, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | IMSS Chicago | ASTC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/imss-chicago/id1114128444/reviews)** | [4.7 (30 ratings)](https://appshunter.io/ios/app/astc/id6466039138/reviews) |
| Number of ratings | 3 | **30** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | Free | Free |
| Size | 59 MB | 87 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Encurate Mobile Technology LLC](https://appshunter.io/developer/1151902757) | [ASSOCIATION OF SCIENCE-TECHNOLOGY CENTERS, INC.](https://appshunter.io/developer/1437372010) |

## What reviewers say

### IMSS Chicago

[App page](https://appshunter.io/ios/app/imss-chicago/id1114128444)

Explore hidden areas and artifacts within a historic mansion with this museum's mobile app. Discover personalized tour content, an interactive location-aware map, and exclusive historical details and photos.

**Highlights:** Personalized tour content, Interactive location-aware map, Exclusive historical content, Artifact discovery alerts, Self-guided tours

**In-app purchases:** none


### 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


## Frequently asked questions

### Is IMSS Chicago free?

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

### Is ASTC free?

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

### Which has better reviews, IMSS Chicago or ASTC?

IMSS Chicago is rated higher. IMSS Chicago averages 5.0 out of 5 from 3 ratings, while ASTC averages 4.7 from 30 ratings.

### Do IMSS Chicago or ASTC have ads?

Neither IMSS Chicago nor ASTC shows ads.

### Which is updated more often, IMSS Chicago or ASTC?

IMSS Chicago ships an update every 2 months, and ASTC every 12 months. Most recently, IMSS Chicago was updated on June 1, 2026 and ASTC on September 11, 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.*