iSPEX vs OOS2025
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iSPEX
This educational tool analyzes light entering a smartphone, breaking it down by spectrum and polarization. It requires a specific hardware add-on to function.
- Spectrum analysis
- Polarization analysis
- Hardware add-on integration
- Educational tool
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iSPEX is a hardware add-on for smartphones that analyzes the light that enters it in terms of its spectrum and its polarization.
OOS2025
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The One Ocean Science Congress is organized by CNRS and IFREMER A Special Event of the 3rd United Nations Conference on the Ocean Endorsed by the United Nations Decade of Ocean Science for Sustainable Development.
Screenshots
Verdict
The clearest difference is update cadence: OOS2025 at daily against iSPEX's every 2 months. 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.
iSPEX ships an update every 2 months, OOS2025 daily. The most recent releases landed on August 16, 2026 and September 19, 2026 respectively.
| Parameter | iSPEX | OOS2025 |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.1 |
| Further details — not scored | ||
| Size | 5 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | DDQ | Copernicus.org |
In-app purchases
iSPEX
No in-app purchases
OOS2025
No in-app purchases
