SPIE Conferences vs IGARSS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SPIE Conferences
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.
- Complete conference programs
- Sync schedule between devices
- Event reminders
- Add notes to events and exhibitors
- Search and filter options
- Venue floor plans
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Hold the program and exhibition guides for all current and upcoming SPIE conferences and exhibitions in the palm of your hand. • Complete programs of all SPIE symposia including events, exhibitors, and participants. • Sync My Schedule between your mobile device and desktop computer. • Be notified when events added to My Schedule are about to begin. • Add notes to any event, exhibitor, or person. • Use search filters and sorting options including relevance sort. • Find events and exhibitors on venue floor plans. At SPIE we strengthen the global optics and photonics community through conferences, publications, and professional development, bringing together engineers, scientists, students, and industry leaders to advance light-based science and technologies. Inspired by the transformative power of photonics to enhance life around the globe, over the past five years SPIE has contributed more than $24 million to the international optics community.
IGARSS
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Official app for the IEEE GRSS International Geoscience and Remote Sensing Symposium
Screenshots
Verdict
The clearest difference is update cadence: SPIE Conferences at every 3 weeks against IGARSS's every 6 weeks. IGARSS's advantage is iOS requirement (10.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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, IGARSS every 6 weeks. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.
| Parameter | SPIE Conferences | IGARSS |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (9 ratings) — better | — |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 3 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 14.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 143 MB | 95 MB |
| Age rating | 4+ | 17+ |
| Developer | SPIE | Conference Management Services, Inc. |
In-app purchases
SPIE Conferences
No in-app purchases
IGARSS
No in-app purchases
Questions
Is SPIE Conferences free?
Is IGARSS free?
Do SPIE Conferences or IGARSS have ads?
Which is updated more often, SPIE Conferences or IGARSS?
Other comparisons
