# SPIE Conferences vs NVIDIA GTC

The clearest difference is rating: NVIDIA GTC at 4.6 against SPIE Conferences's 3.8. NVIDIA GTC also leads on ratings volume (741 vs 9) and monetization model (free vs ad-supported). SPIE Conferences's advantage is iOS requirement (14.0 vs 16). On price, review sentiment, ads 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.

NVIDIA GTC holds the better App Store score, 4.6 against 3.8. That said, the two scores are not equally well evidenced: NVIDIA GTC has 741 ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 25% of SPIE Conferences's written reviews are positive against 21% of NVIDIA GTC's, so the app with the better star average is not the one people write more warmly about.

SPIE Conferences ships an update every 3 weeks, NVIDIA GTC every 9 days. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | SPIE Conferences | NVIDIA GTC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (9 ratings)](https://appshunter.io/ios/app/spie-conferences/id349678364/reviews) | **[4.6 (741 ratings)](https://appshunter.io/ios/app/nvidia-gtc/id1354302590/reviews)** |
| Number of ratings | 9 | **741** |
| Positive reviews | **25.0% of reviews** | 20.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Ad-supported | **Free** |
| Size | 143 MB | 175 MB |
| Requires iOS | **14.0** | 16 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SPIE](https://appshunter.io/developer/349678367) | [NVIDIA Corporation](https://appshunter.io/developer/527492966) |

## What reviewers say

### SPIE Conferences

[App page](https://appshunter.io/ios/app/spie-conferences/id349678364)

Access comprehensive program and exhibition guides for all SPIE conferences and events. Organize your schedule, take notes, and find exhibitors with interactive floor plans. Stay informed about upcoming sessions and connect with the optics and photonics community.

**Highlights:** Complete conference programs, Sync schedule between devices, Event reminders, Add notes to events and exhibitors, Search and filter options, Venue floor plans

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

**In-app purchases:** none


### NVIDIA GTC

[App page](https://appshunter.io/ios/app/nvidia-gtc/id1354302590)

Access your personal schedule, event agenda, and session details for a major technology conference. Connect with sponsors and exhibitors, and stay updated with the latest information.

**Highlights:** Personal schedule access, Event agenda, Sponsor/exhibitor profiles, Session information, Social media integration

**In-app purchases:** none

**What reviewers like**

- 👍 Useful for navigating conference venue
- 📅 Effective scheduling functionality
- 🎯 Good for viewing conference sessions and information
- ✨ Nice visual design and aesthetics

**What reviewers complain about**

- 🐛 Frequent crashes and instability
- 🔐 Login system broken and non-functional
- 📱 Poor iPad and tablet layout rendering
- ⚠️ Screen rotation issues (landscape vs portrait)
- 🐢 Slow app performance

**Reported bugs**

- Login loop and authentication failures
- Profile loading error after OAuth
- App crashes when scrolling through schedule
- App crashes when scheduling/declining sessions
- Personal schedule randomly disappears and reappears

**Requested features**

- Multiple sessions at same time scheduling support
- Sort interested sessions by time/day instead of alphabetically
- iPhone X support
- Offline mode capability


## Frequently asked questions

### Is SPIE Conferences free?

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

### Is NVIDIA GTC free?

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

### Which has better reviews, SPIE Conferences or NVIDIA GTC?

NVIDIA GTC is rated higher. SPIE Conferences averages 3.8 out of 5 from 9 ratings, while NVIDIA GTC averages 4.6 from 741 ratings.

### Do SPIE Conferences or NVIDIA GTC have ads?

Neither SPIE Conferences nor NVIDIA GTC shows ads.

### Which is updated more often, SPIE Conferences or NVIDIA GTC?

SPIE Conferences ships an update every 3 weeks, and NVIDIA GTC every 9 days. Most recently, SPIE Conferences was updated on November 6, 2026 and NVIDIA GTC on November 2, 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.*