NSP32 nanoLambda Spectrometer vs Calefact
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NSP32 nanoLambda Spectrometer
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XL-500 portable BLE spectrometer device is required. Please visit https://nanolambda.myshopify.com/ for more details. XL-500 is an ultra compact Bluetooth Spectroradiometer based on disruptive digital-nano convergence technology. While its size is compact, the features and performance is comparable to conventional industry popular equipment. It is easy and convenient to use as a portable device with smartphone app, as a spectrum recorder with internal memory and rechargeable battery. XL-500 is individually calibrated and provides device-to-device repeatability. This app supports: 1) Emission measurement (SPD, PPFD, LUX, CRI, CCT, CIEXYZ, CIExy, CIEuv ) 2) Periodic measurement (as spectrum recorder) 3) Reflection measurement (relative-SPD, CIEXYZ, CIELab, CIExy, CIEuv) Start the nanoLambda's latest BLE spectrometer adventure now.
Calefact
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蓝牙连接Calafact加热设备，进行使用操作。
Screenshots
Verdict
NSP32 nanoLambda Spectrometer and Calefact are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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.
NSP32 nanoLambda Spectrometer ships an update every 2 months, Calefact every 3 months. The most recent releases landed on December 13, 2025 and October 25, 2026 respectively.
| Parameter | NSP32 nanoLambda Spectrometer | Calefact |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 22 MB | 12 MB |
| Age rating | 4+ | 12+ |
| Developer | nanoLambda | Calefact Limited |
In-app purchases
NSP32 nanoLambda Spectrometer
No in-app purchases
Calefact
No in-app purchases
Questions
Is NSP32 nanoLambda Spectrometer free?
Is Calefact free?
Do NSP32 nanoLambda Spectrometer or Calefact have ads?
Which is updated more often, NSP32 nanoLambda Spectrometer or Calefact?
Other comparisons
