uSpectrumX vs WattDesk
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
uSpectrumX
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uSpectrumX is a wireless controller application for UPRTek handheld spectrometer which provides 6 main features, namely Basic, Spectrum, CIE1931, CIE1976, CRI, and TM-30. Supported Devices ・MK350S Premium (≧ FW Ver.1.1.0.B24) ・MK350N Premium (≧ FW Ver.1.1.1.B6) # uSpectrumX will continuously add more supported devices in the future. Connect to Handheld Spectrometer via Wi-Fi ・To remotely analyze light source target. ・To remotely configure the "Integration Mode" of device ・To remotely run "Dark Calibration" of device. ・To save the captured data of device. More Features ・To show Spectrum, CIE1931, CIE1976, CRI, TM-30 diagram of the data(*.xls), which was generated from UPRTek handheld spectrometer. ・To see more detail information of light source, such as LUX, CCT, CRI, x, y, λp, and λpV. ・To share the measured data via email. ・To choose uSpectrumX to open UPRTek xls file from other apps.
WattDesk
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WattDesk is a smart energy management platform designed for modern energy storage systems. Designed to support end users, installers, distributors, and service partners, WattDesk enables efficient monitoring, management, and operation of complex energy systems from a single interface. The platform provides real-time visibility into system status and energy flows, helping different user roles better understand system performance and respond efficiently. Key capabilities include: • Real-time monitoring of inverters, batteries, grid, and loads • Clear visualization of system data and operational status • Historical data and trends for performance analysis • Remote system access and configuration support • Centralized management for multiple sites and systems Whether you are a system owner managing daily operations, or a professional partner responsible for installation, commissioning, or maintenance, WattDesk helps simplify system management and improve operational efficiency.
Screenshots
Verdict
The clearest difference is update cadence: WattDesk at fortnightly against uSpectrumX's every 3 months. uSpectrumX's advantage is iOS requirement (9.0 vs 15.6). 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.
uSpectrumX ships an update every 3 months, WattDesk fortnightly. The most recent releases landed on September 16, 2026 and September 18, 2026 respectively.
| Parameter | uSpectrumX | WattDesk |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 25 MB | 121 MB |
| Age rating | 4+ | 4+ |
| Developer | United Power Research Technology Corporation | 旭浦能源 |
In-app purchases
uSpectrumX
No in-app purchases
WattDesk
No in-app purchases









