NSP32 nanoLambda Spectrometer vs Screen Prep
Price, ratings, monetisation and update history for both apps, side by side ā 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.
Screen Prep
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Screen Prep readies any iPhone, iPad, or Apple Watch for VFX screen replacement. Fill the display with a chroma key color, add tracking marks, and lock it down so your compositor gets a screen that's easy to key and track. ⢠Choose from preset chroma colors or pick your own with a color wheel ⢠Add tracking marks and adjust their position, size, and color ⢠AddAdded: Tracking marks can scroll vertically, horizontally or both, and pinch to zoom, so actors can scroll the screen ⢠Frame marks for the full screen, 16:9, or an Apple Watch display ⢠Display color bars, a grid, or a checkerboard instead ⢠Lock the screen so actors can't trigger the controls by accident ⢠Save setups and recall them in a tap ⢠Export a 16:9 image to Photos to show on a TV or monitor via AirPlay APPLE WATCH Send saved screens to Apple Watch. Swipe or turn the Digital Crown to choose one, then double tap to lock it while the actor wears the watch. WORKS EVERYWHERE In addition to iPhone, Screen Prep supports portrait and landscape on iPad, the outer and open screens of iPhone Duo, and full screen on Apple silicon Macs. Need it on another screen? Export an image, then transfer it or AirPlay it to a TV or another display. A built-in Manual covers every feature. Site and Privacy Policy: https://squirrelfx.llc/screen-prep.html
Screenshots
Verdict
The clearest difference is price: NSP32 nanoLambda Spectrometer at Free against Screen Prep's $9.99. NSP32 nanoLambda Spectrometer also leads on update cadence (every 2 months vs every 6 months) and iOS requirement (13.0 vs 16.0). Screen Prep's advantage is chart position (#187 vs unranked). On ads, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
NSP32 nanoLambda Spectrometer is free to download; Screen Prep costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
NSP32 nanoLambda Spectrometer ships an update every 2 months, Screen Prep every 6 months. The most recent releases landed on December 13, 2025 and October 27, 2026 respectively.
| Parameter | NSP32 nanoLambda Spectrometer | Screen Prep |
|---|---|---|
| Price | Free ā better | $9.99 |
| Update frequency | Every 2 months ā better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Best chart rank | ā | #187 ā better |
| Devices | iPhone, iPad, iPod ā better | iPhone, iPad |
| Requires iOS | 13.0 ā better | 16.0 |
| Further details ā not scored | ||
| Size | 22 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | nanoLambda | Squirrel FX LLC |
In-app purchases
NSP32 nanoLambda Spectrometer
No in-app purchases
Screen Prep
No in-app purchases
Questions
Is NSP32 nanoLambda Spectrometer free?
Is Screen Prep free?
Do NSP32 nanoLambda Spectrometer or Screen Prep have ads?
Which is updated more often, NSP32 nanoLambda Spectrometer or Screen Prep?
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