uSpectrum PAR vs LuxSeeker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
uSpectrum PAR
This application connects wirelessly to a handheld spectral PAR meter, allowing remote analysis and configuration of light sources. It displays detailed spectral data, light source information, and absorption metrics, with options to save and share measurements.
- Wireless Bluetooth connection
- Remote light source analysis
- Save captured data
- Display spectrum and CIE diagrams
- View light source metrics (LUX, CCT, CRI)
- Share measured data via email
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uSpectrum PAR is a wireless controller application for UPRtek handheld Spectral PAR Meter which provides 6 main features, namely Basic, Spectrum, PPFD Spectrum, CIE1931, CIE1976, and, CRI. Supported Devices ・PG200N (≧ FW Ver.1.1.0.B25) # uSpectrum PAR will continuously add more supported devices in the future. Connect to Handheld Spectral PAR Meter via Bluetooth ・To remotely analyze light source target. ・To remotely configure the "Integration Mode" of device ・To save the captured data of device. More Features ・To show Spectrum, PPFD Spectrum, CIE1931, CIE1976, CRI diagram of the data(*.xls), which was generated from UPRTek handheld spectral PAR meter. ・To see more information of light source, such as LUX, CCT, CRI, x, y, λp, and λpV. ・To see more information of absorption of light source, such as PPFD, PFD, PFD-R, PFD-G, and, PFD-B. ・To share the measured data via email.
LuxSeeker
Measure illuminance and color temperature in real-time. Get lighting scene recommendations based on EML, lux, and CCT values. Snapshot data and share trends via CSV or PNG.
- Real-time illuminance (lux) measurement
- Real-time color temperature (CCT) measurement
- Lighting scene recommendations (EML, lux, CCT)
- Snapshot and share data via CSV
- Trend charts shareable via PNG
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Key feature: - Real-time measurement illuminance (lx) and color temperature (CCT) - Lighting scenes recommendation with Equivalent Melanopic Lux (EML), lux and CCT. - EML version to 0-30000lx, 2000-10000K, 0-45000lx(EML) - none EML version to 0-10000lx, 2000-7000K. - How good is your light? Rated the light for you - Snapshot real-time data. The value can share by .CSV - Trend Charts. The chart can share by .PNG
Screenshots
Verdict
The clearest difference is rating: LuxSeeker at 3.0 against uSpectrum PAR's 1.0. LuxSeeker also leads on update cadence (every 3 months vs every 8 months). uSpectrum PAR's advantage is iOS requirement (9.0 vs 15.6). On price, ratings volume, ads and in-app purchases 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.
LuxSeeker holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively.
uSpectrum PAR ships an update every 8 months, LuxSeeker every 3 months. The most recent releases landed on October 21, 2026 and October 7, 2026 respectively.
| Parameter | uSpectrum PAR | LuxSeeker |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (3 ratings) | 3.0 (2 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 8 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 25 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | United Power Research Technology Corporation | LIDlight INC. |
Customer experience
uSpectrum PAR
LuxSeeker
In-app purchases
uSpectrum PAR
No in-app purchases
LuxSeeker
No in-app purchases
Questions
Is uSpectrum PAR free?
Is LuxSeeker free?
Which has better reviews, uSpectrum PAR or LuxSeeker?
Do uSpectrum PAR or LuxSeeker have ads?
Which is updated more often, uSpectrum PAR or LuxSeeker?
Other comparisons
