iSPEX vs iViking
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.
iViking
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iViking is the official mobile app of NorseMap, a research project funded by theEuropean Research Council (ERC) and based at University College Cork (Ireland), that explores how the legacy of the Vikings continues to shape contemporary culture. Vikings are highly visible in today’s world—appearing in media, branding, public art, tourism, heritage, and political discourse. Their meanings are varied and constantly evolving. iViking allows you to document these uses and contribute to a broader understanding of how the Viking past is received, interpreted, and reused today.
Screenshots
Verdict
The clearest difference is update cadence: iViking at every 4 weeks 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, iViking every 4 weeks. The most recent releases landed on September 28, 2026 and October 5, 2026 respectively.
| Parameter | iSPEX | iViking |
|---|---|---|
| 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 | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 5 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | DDQ | Impero IT Services |
In-app purchases
iSPEX
No in-app purchases
iViking
No in-app purchases
