# NSP32 nanoLambda Spectrometer vs PLANET3

NSP32 nanoLambda Spectrometer and PLANET3 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.

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, PLANET3 every 5 weeks. The most recent releases landed on December 13, 2025 and October 6, 2026 respectively.

## The numbers

| Metric | NSP32 nanoLambda Spectrometer | PLANET3 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 22 MB | 47 MB |
| Requires iOS | 13.0 | **12.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [nanoLambda](https://appshunter.io/developer/1848242561) | [Planet 3](https://appshunter.io/developer/1569962446) |

## What reviewers say

### NSP32 nanoLambda Spectrometer

[App page](https://appshunter.io/ios/app/nsp32-nanolambda-spectrometer/id1480194984)

**Features:** macOS Compatibility

**In-app purchases:** none


### PLANET3

[App page](https://appshunter.io/ios/app/planet3-e/id6737837519)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NSP32 nanoLambda Spectrometer free?

NSP32 nanoLambda Spectrometer is free to download, with no in-app purchases.

### Is PLANET3 free?

PLANET3 is free to download, with no in-app purchases.

### Do NSP32 nanoLambda Spectrometer or PLANET3 have ads?

Neither NSP32 nanoLambda Spectrometer nor PLANET3 shows ads.

### Which is updated more often, NSP32 nanoLambda Spectrometer or PLANET3?

NSP32 nanoLambda Spectrometer ships an update every 2 months, and PLANET3 every 5 weeks. Most recently, NSP32 nanoLambda Spectrometer was updated on December 13, 2025 and PLANET3 on October 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*