# SPIE Conferences vs APS/URSI

The clearest difference is update cadence: SPIE Conferences at every 3 weeks against APS/URSI's every 6 months. APS/URSI's advantage is iOS requirement (10.0 vs 14.0). 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.

SPIE Conferences ships an update every 3 weeks, APS/URSI every 6 months. The most recent releases landed on October 29, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | SPIE Conferences | APS/URSI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (9 ratings)](https://appshunter.io/ios/app/spie-conferences/id349678364/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Monetization | Ad-supported | — |
| Size | 143 MB | 64 MB |
| Requires iOS | 14.0 | **10.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [SPIE](https://appshunter.io/developer/349678367) | [Conference Management Services, Inc.](https://appshunter.io/developer/1510471268) |

## 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


### APS/URSI

[App page](https://appshunter.io/ios/app/apsursi/id1250169961)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SPIE Conferences free?

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

### Is APS/URSI free?

APS/URSI is free to download, with no in-app purchases.

### Do SPIE Conferences or APS/URSI have ads?

Neither SPIE Conferences nor APS/URSI shows ads.

### Which is updated more often, SPIE Conferences or APS/URSI?

SPIE Conferences ships an update every 3 weeks, and APS/URSI every 6 months. Most recently, SPIE Conferences was updated on October 29, 2026 and APS/URSI on October 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.*