iSPEX vs Open
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.
Open
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Open-red is the citizen science app for measuring and mapping the environment. Connect your measurement device over Bluetooth (RadiaCode for gamma radiation, Opple LightMaster for light pollution) and record geolocated tracks as you move. View your measurements on the map, check the spectrum or the color diagram in real time, and upload your routes to contribute to an open, collaborative map. Key features: • Bluetooth connection with RadiaCode and Opple LightMaster 3 • Track recording with high-precision GPS • Radiation: dose (µSv/h), CPM and gamma spectrum with isotope lines • Light: lux, color temperature (CCT) and CIE chromaticity diagram • Map with your measurements and reference layers • Sync and share your tracks with the community Open-red is a citizen science project by Ibercivis.
Screenshots
Verdict
iSPEX and Open are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
| Parameter | iSPEX | Open |
|---|---|---|
| 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 | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | DDQ | Fundación Ibercivis |
In-app purchases
iSPEX
No in-app purchases
Open
No in-app purchases
